reference/mbstring/functions/mb-strlen.xml
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92f1b8b177eb5730382abf9f27bae868f1bb636f
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>mixed</type><methodname>mb_strlen</methodname>
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<methodparam><type>string</type><parameter>str</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>encoding</parameter><initializer>mb_internal_encoding()</initializer></methodparam>
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<type>int</type><methodname>mb_strlen</methodname>
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<methodparam><type>string</type><parameter>string</parameter></methodparam>
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<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>encoding</parameter><initializer>&null;</initializer></methodparam>
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</methodsynopsis>
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<para>
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Gets the length of a <type>string</type>.
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>str</parameter></term>
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<term><parameter>string</parameter></term>
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<listitem>
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<para>
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The <type>string</type> being checked for length.
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&reftitle.returnvalues;
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<para>
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Returns the number of characters in
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<type>string</type> <parameter>str</parameter> having character encoding
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<type>string</type> <parameter>string</parameter> having character encoding
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<parameter>encoding</parameter>. A multi-byte character is
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counted as 1.
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</para>
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</refsect1>
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<refsect1 role="errors">
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&reftitle.errors;
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<para>
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Returns &false; if the given <parameter>encoding</parameter> is invalid.
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If the encoding is unknown, an error of level
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<constant>E_WARNING</constant> is generated.
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</para>
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&return.falseproblem;
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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&mbstring.changelog.encoding-nullable;
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="seealso">
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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