reference/filter/filters.xml
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372e1b4d392a909073c06aba5975d7bedbf0b725
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</thead>
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<tbody>
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<row>
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<entry><constant>FILTER_VALIDATE_BOOLEAN</constant></entry>
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<entry>
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<constant>FILTER_VALIDATE_BOOLEAN</constant>,
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<constant>FILTER_VALIDATE_BOOL</constant>
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</entry>
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<entry>"boolean"</entry>
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<entry>
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<parameter>default</parameter>
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returned only for "0", "false", "off", "no", and "", and
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&null; is returned for all non-boolean values.
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</para>
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<para>
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String values are trimmed using <function>trim</function> before comparison.
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</para>
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_VALIDATE_DOMAIN</constant></entry>
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<entry>"validate_domain"</entry>
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<entry>
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<parameter>default</parameter>
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</entry>
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<entry>
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<constant>FILTER_FLAG_HOSTNAME</constant>,
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>
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<para>
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Validates whether the domain name label lengths are valid.
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</para>
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<para>
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Validates domain names against RFC 1034, RFC 1035, RFC 952,
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RFC 1123, RFC 2732, RFC 2181, and RFC 1123. Optional flag
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<constant>FILTER_FLAG_HOSTNAME</constant> adds ability to
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specifically validate hostnames (they must start with an
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alphanumeric character and contain only alphanumerics or
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hyphens).
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</para>
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</entry>
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</row>
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<row>
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<entry>
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<parameter>default</parameter>
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</entry>
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<entry></entry>
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<entry>
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<constant>FILTER_FLAG_EMAIL_UNICODE</constant>,
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>
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<para>
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Validates whether the value is a valid e-mail address.
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</para>
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<para>
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In general, this validates e-mail addresses against the syntax in
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RFC 822, with the exceptions that comments and whitespace folding
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In general, this validates e-mail addresses against the <literal>addr-spec</literal>syntax in
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<link xlink:href="&url.rfc;822">RFC 822</link>, with the exceptions that comments and whitespace folding
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and dotless domain names
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are not supported.
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</para>
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</entry>
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<entry>"float"</entry>
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<entry>
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<parameter>default</parameter>,
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<parameter>decimal</parameter>
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<parameter>decimal</parameter>,
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<parameter>min_range</parameter>,
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<parameter>max_range</parameter>
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</entry>
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<entry>
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<constant>FILTER_FLAG_ALLOW_THOUSAND</constant>,
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>
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<constant>FILTER_FLAG_ALLOW_THOUSAND</constant>
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<para>
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Validates value as float, optionally from the specified range, and converts to float on success.
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</para>
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<para>
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String values are trimmed using <function>trim</function> before comparison.
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</para>
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</entry>
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<entry>Validates value as float, and converts to float on success.</entry>
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</row>
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<row>
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<entry><constant>FILTER_VALIDATE_INT</constant></entry>
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</entry>
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<entry>
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<constant>FILTER_FLAG_ALLOW_OCTAL</constant>,
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<constant>FILTER_FLAG_ALLOW_HEX</constant>
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<constant>FILTER_FLAG_ALLOW_HEX</constant>,
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>
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<para>
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Validates value as integer, optionally from the specified range, and converts to int on success.
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</para>
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<para>
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String values are trimmed using <function>trim</function> before comparison.
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</para>
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</entry>
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<entry>Validates value as integer, optionally from the specified range, and converts to int on success.</entry>
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</row>
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<row>
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<entry><constant>FILTER_VALIDATE_IP</constant></entry>
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<constant>FILTER_FLAG_IPV4</constant>,
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<constant>FILTER_FLAG_IPV6</constant>,
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<constant>FILTER_FLAG_NO_PRIV_RANGE</constant>,
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<constant>FILTER_FLAG_NO_RES_RANGE</constant>
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<constant>FILTER_FLAG_NO_RES_RANGE</constant>,
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<constant>FILTER_FLAG_GLOBAL_RANGE</constant>,
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>
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Validates value as IP address, optionally only IPv4 or IPv6 or not
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<entry>
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<parameter>default</parameter>
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</entry>
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<entry></entry>
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<entry>
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>Validates value as MAC address.</entry>
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</row>
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<row>
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<parameter>default</parameter>,
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<parameter>regexp</parameter>
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</entry>
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<entry></entry>
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<entry>
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>
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Validates value against <parameter>regexp</parameter>, a
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<link linkend="book.pcre">Perl-compatible</link> regular expression.
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<parameter>default</parameter>
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</entry>
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<entry>
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<constant>FILTER_FLAG_SCHEME_REQUIRED</constant>,
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<constant>FILTER_FLAG_HOST_REQUIRED</constant>,
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<constant>FILTER_FLAG_PATH_REQUIRED</constant>,
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<constant>FILTER_FLAG_QUERY_REQUIRED</constant>
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<constant>FILTER_FLAG_QUERY_REQUIRED</constant>,
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<constant>FILTER_NULL_ON_FAILURE</constant>
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</entry>
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<entry>Validates value as URL (according to <link xlink:href="&url.rfc;2396">&url.rfc;2396</link>), optionally with required components. Beware a valid URL may not specify the HTTP protocol <literal>http://</literal> so further validation may be required to determine the URL uses an expected protocol, e.g. <literal>ssh://</literal> or <literal>mailto:</literal>. Note that the function will only find ASCII URLs to be valid; internationalized domain names (containing non-ASCII characters) will fail.</entry>
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</row>
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</para>
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<note>
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<para>
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As of PHP 5.4.11, the numbers +0 and -0 validate as both integers as well
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as floats (using <constant>FILTER_VALIDATE_FLOAT</constant> and
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<constant>FILTER_VALIDATE_INT</constant>). Before PHP 5.4.11 they only
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validated as floats (using <constant>FILTER_VALIDATE_FLOAT</constant>).
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</para>
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<para>
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When <parameter>default</parameter> is set to option, <parameter>default</parameter>'s value is used if value is not validated.
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When <parameter>default</parameter> is set to option,
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<parameter>default</parameter>'s value is used if value is not validated.
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</para>
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</note>
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</thead>
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<tbody>
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<row>
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<entry>5.5.0</entry>
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<entry>8.0.0</entry>
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<entry>
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The <constant>FILTER_FLAG_SCHEME_REQUIRED</constant> and
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<constant>FILTER_FLAG_HOST_REQUIRED</constant> flags for the
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<constant>FILTER_VALIDATE_URL</constant> filter have been removed.
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The <literal>scheme</literal> and <literal>host</literal> are (and have been) always required.
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</entry>
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</row>
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<row>
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<entry>8.0.0</entry>
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<entry>
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Added <constant>FILTER_VALIDATE_BOOL</constant> as an alias for <constant>FILTER_VALIDATE_BOOLEAN</constant>.
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Using <constant>FILTER_VALIDATE_BOOL</constant> is preferred.
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</entry>
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</row>
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<row>
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<entry>7.4.0</entry>
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<entry>
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Added <parameter>min_range</parameter> and <parameter>max_range</parameter>
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options for <constant>FILTER_VALIDATE_FLOAT</constant>.
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</entry>
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</row>
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<row>
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<entry>7.0.0</entry>
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<entry>
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Added <constant>FILTER_VALIDATE_MAC</constant>
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Added <constant>FILTER_FLAG_HOSTNAME</constant> and <constant>FILTER_VALIDATE_DOMAIN</constant>.
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</entry>
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</row>
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</tbody>
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<entry>
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<constant>FILTER_FLAG_STRIP_LOW</constant>,
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<constant>FILTER_FLAG_STRIP_HIGH</constant>,
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<constant>FILTER_FLAG_STRIP_BACKTICK</constant>,
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<constant>FILTER_FLAG_ENCODE_LOW</constant>,
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<constant>FILTER_FLAG_ENCODE_HIGH</constant>
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</entry>
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<entry><constant>FILTER_SANITIZE_MAGIC_QUOTES</constant></entry>
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<entry>"magic_quotes"</entry>
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<entry></entry>
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<entry>Apply <function>addslashes</function>.</entry>
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<entry>
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Apply <function>addslashes</function>.
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(<emphasis>DEPRECATED</emphasis> as of PHP 7.3.0 and
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<emphasis>REMOVED</emphasis> as of PHP 8.0.0,
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use <constant>FILTER_SANITIZE_ADD_SLASHES</constant> instead.)
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_SANITIZE_ADD_SLASHES</constant></entry>
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<entry>"add_slashes"</entry>
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<entry></entry>
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<entry>Apply <function>addslashes</function>. (Available as of PHP 7.3.0)</entry>
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</row>
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<row>
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<entry><constant>FILTER_SANITIZE_NUMBER_FLOAT</constant></entry>
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<entry>
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<constant>FILTER_FLAG_STRIP_LOW</constant>,
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<constant>FILTER_FLAG_STRIP_HIGH</constant>,
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<constant>FILTER_FLAG_STRIP_BACKTICK</constant>,
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<constant>FILTER_FLAG_ENCODE_HIGH</constant>
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</entry>
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<entry>
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HTML-escape <literal>'"<>&</literal> and characters with
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HTML-encode <literal>'"<>&</literal> and characters with
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ASCII value less than 32, optionally strip or encode other special
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characters.
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</entry>
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<entry><constant>FILTER_SANITIZE_FULL_SPECIAL_CHARS</constant></entry>
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<entry>"full_special_chars"</entry>
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<entry>
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<constant>FILTER_FLAG_NO_ENCODE_QUOTES</constant>,
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<constant>FILTER_FLAG_NO_ENCODE_QUOTES</constant>
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</entry>
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<entry>
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Equivalent to calling <function>htmlspecialchars</function> with <constant>ENT_QUOTES</constant> set. Encoding quotes can
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<constant>FILTER_FLAG_NO_ENCODE_QUOTES</constant>,
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<constant>FILTER_FLAG_STRIP_LOW</constant>,
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<constant>FILTER_FLAG_STRIP_HIGH</constant>,
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<constant>FILTER_FLAG_STRIP_BACKTICK</constant>,
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<constant>FILTER_FLAG_ENCODE_LOW</constant>,
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<constant>FILTER_FLAG_ENCODE_HIGH</constant>,
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<constant>FILTER_FLAG_ENCODE_AMP</constant>
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</entry>
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<entry>Strip tags, optionally strip or encode special characters.</entry>
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<entry>
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Strip tags and HTML-encode double and single quotes, optionally strip
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or encode special characters. Encoding quotes can be
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disabled by setting <constant>FILTER_FLAG_NO_ENCODE_QUOTES</constant>.
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(<emphasis>Deprecated</emphasis> as of PHP 8.1.0,
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use <function>htmlspecialchars</function> instead.)
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_SANITIZE_STRIPPED</constant></entry>
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<entry>"stripped"</entry>
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<entry></entry>
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<entry>Alias of "string" filter.</entry>
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<entry>
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Alias of "string" filter.
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(<emphasis>Deprecated</emphasis> as of PHP 8.1.0,
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use <function>htmlspecialchars</function> instead.)
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_SANITIZE_URL</constant></entry>
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<entry>
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<constant>FILTER_FLAG_STRIP_LOW</constant>,
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<constant>FILTER_FLAG_STRIP_HIGH</constant>,
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<constant>FILTER_FLAG_STRIP_BACKTICK</constant>,
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<constant>FILTER_FLAG_ENCODE_LOW</constant>,
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<constant>FILTER_FLAG_ENCODE_HIGH</constant>,
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<constant>FILTER_FLAG_ENCODE_AMP</constant>
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</thead>
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<tbody>
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<row>
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<entry>5.2.11/5.3.1</entry>
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<entry>8.1.0</entry>
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<entry>
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<constant>FILTER_SANITIZE_STRING</constant> and
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<constant>FILTER_SANITIZE_STRIPPED</constant> have been deprecated.
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</entry>
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</row>
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<row>
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<entry>8.0.0</entry>
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<entry>
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Slashes (<literal>/</literal>) are removed by
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<constant>FILTER_SANITIZE_EMAIL</constant>. Prior they were retained.
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<constant>FILTER_SANITIZE_MAGIC_QUOTES</constant> has been removed.
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</entry>
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</row>
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<row>
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<entry>7.3.0</entry>
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<entry>
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<constant>FILTER_SANITIZE_ADD_SLASHES</constant> was added as a
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replacement for <constant>FILTER_SANITIZE_MAGIC_QUOTES</constant>
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</entry>
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</row>
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<row>
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<entry>7.3.0</entry>
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<entry>
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<constant>FILTER_SANITIZE_MAGIC_QUOTES</constant> has been deprecated.
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</entry>
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</row>
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</tbody>
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<entry><constant>FILTER_CALLBACK</constant></entry>
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<entry>"callback"</entry>
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<entry><type>callable</type> function or method</entry>
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<entry></entry>
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<entry>All flags are ignored</entry>
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<entry>Call user-defined function to filter data.</entry>
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</row>
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</tbody>
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_FLAG_STRIP_BACKTICK</constant></entry>
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<entry>
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<constant>FILTER_SANITIZE_ENCODED</constant>,
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<constant>FILTER_SANITIZE_SPECIAL_CHARS</constant>,
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<constant>FILTER_SANITIZE_STRING</constant>,
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<constant>FILTER_UNSAFE_RAW</constant>
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</entry>
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<entry>
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Strips backtick characters.
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_FLAG_ALLOW_FRACTION</constant></entry>
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<entry>
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<constant>FILTER_SANITIZE_NUMBER_FLOAT</constant>
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<entry>
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<constant>FILTER_SANITIZE_ENCODED</constant>,
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<constant>FILTER_SANITIZE_STRING</constant>,
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<constant>FILTER_SANITIZE_RAW</constant>
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<constant>FILTER_UNSAFE_RAW</constant>
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</entry>
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<entry>
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Encodes all characters with a numerical value <32.
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<constant>FILTER_SANITIZE_ENCODED</constant>,
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<constant>FILTER_SANITIZE_SPECIAL_CHARS</constant>,
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<constant>FILTER_SANITIZE_STRING</constant>,
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<constant>FILTER_SANITIZE_RAW</constant>
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<constant>FILTER_UNSAFE_RAW</constant>
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</entry>
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<entry>
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Encodes all characters with a numerical value >127.
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<entry><constant>FILTER_FLAG_ENCODE_AMP</constant></entry>
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<entry>
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<constant>FILTER_SANITIZE_STRING</constant>,
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<constant>FILTER_SANITIZE_RAW</constant>
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<constant>FILTER_UNSAFE_RAW</constant>
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</entry>
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<entry>
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Encodes ampersands (<literal>&</literal>).
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@@ -511,10 +646,10 @@ filter.default_flags = 0
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<row>
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<entry><constant>FILTER_NULL_ON_FAILURE</constant></entry>
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<entry>
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<constant>FILTER_VALIDATE_BOOLEAN</constant>
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any <link linkend="filter.filters.validate"><constant>FILTER_VALIDATE_*</constant></link>
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</entry>
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<entry>
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Returns &null; for unrecognized boolean values.
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Returns &null; for unrecognized values.
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</entry>
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</row>
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<row>
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_FLAG_EMAIL_UNICODE</constant></entry>
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<entry>
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<constant>FILTER_VALIDATE_EMAIL</constant>
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</entry>
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<entry>
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Allows the local part of the email address to contain Unicode characters.
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_FLAG_IPV4</constant></entry>
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<entry>
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<constant>FILTER_VALIDATE_IP</constant>
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<constant>FILTER_VALIDATE_IP</constant>
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</entry>
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<entry>
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<para>
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Fails validation for the following reserved IPv4 ranges:
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<literal>0.0.0.0/8</literal>, <literal>169.254.0.0/16</literal>,
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<literal>192.0.2.0/24</literal> and <literal>224.0.0.0/4</literal>.
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This flag does not apply to IPv6 addresses.
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<literal>127.0.0.0/8</literal> and <literal>240.0.0.0/4</literal>.
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</para>
732
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<para>
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Fails validation for the following reserved IPv6 ranges:
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<literal>::1/128</literal>, <literal>::/128</literal>,
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<literal>::ffff:0:0/96</literal> and <literal>fe80::/10</literal>.
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</para>
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<para>
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These are the ranges that are marked as Reserved-By-Protocol in
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<link xlink:href="&url.rfc;6890">RFC 6890</link>.
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</para>
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_FLAG_GLOBAL_RANGE</constant></entry>
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<entry>
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<constant>FILTER_VALIDATE_IP</constant>
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</entry>
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<entry>
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<para>
750
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Fails validation for non global IPv4/IPv6 ranges as found in
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<link xlink:href="&url.rfc;6890">RFC 6890</link> with the
752
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<literal>Global</literal> attribute being <literal>False</literal>.
753
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</para>
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</entry>
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</row>
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<row>
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<entry><constant>FILTER_FLAG_SCHEME_REQUIRED</constant></entry>
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<entry>
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<constant>FILTER_VALIDATE_URL</constant>
760
+
</entry>
761
+
<entry>
762
+
Requires the <acronym>URL</acronym> to contain a scheme part.
763
+
</entry>
764
+
</row>
765
+
<row>
766
+
<entry><constant>FILTER_FLAG_HOST_REQUIRED</constant></entry>
767
+
<entry>
768
+
<constant>FILTER_VALIDATE_URL</constant>
769
+
</entry>
770
+
<entry>
771
+
Requires the <acronym>URL</acronym> to contain a host part.
587
772
</entry>
588
773
</row>
589
774
<row>
...
...
@@ -617,7 +802,8 @@ filter.default_flags = 0
617
802
<entry>
618
803
</entry>
619
804
<entry>
620
-
Requires the value to be an array.
805
+
Requires the value to be an array. Filter given will be applied to each
806
+
scalar entry of the array.
621
807
</entry>
622
808
</row>
623
809
<row>
...
...
@@ -633,6 +819,44 @@ filter.default_flags = 0
633
819
</tgroup>
634
820
</table>
635
821
</para>
822
+
823
+
<simplesect role="changelog">
824
+
&reftitle.changelog;
825
+
<para>
826
+
<informaltable>
827
+
<tgroup cols="2">
828
+
<thead>
829
+
<row>
830
+
<entry>&Version;</entry>
831
+
<entry>&Description;</entry>
832
+
</row>
833
+
</thead>
834
+
<tbody>
835
+
<row>
836
+
<entry>8.2.0</entry>
837
+
<entry>
838
+
<constant>FILTER_FLAG_GLOBAL_RANGE</constant> as a flag to
839
+
<constant>FILTER_VALIDATE_IP</constant> has been added.
840
+
</entry>
841
+
</row>
842
+
<row>
843
+
<entry>7.3.0</entry>
844
+
<entry>
845
+
The explicit usage of <constant>FILTER_FLAG_SCHEME_REQUIRED</constant>
846
+
and <constant>FILTER_FLAG_HOST_REQUIRED</constant> has been deprecated.
847
+
</entry>
848
+
</row>
849
+
<row>
850
+
<entry>7.1.0</entry>
851
+
<entry>
852
+
<constant>FILTER_FLAG_EMAIL_UNICODE</constant> has been added.
853
+
</entry>
854
+
</row>
855
+
</tbody>
856
+
</tgroup>
857
+
</informaltable>
858
+
</para>
859
+
</simplesect>
636
860
</section>
637
861
<!--}}}-->
638
862
</chapter>
639
863