reference/info/functions/phpversion.xml
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4fd318ca791ef360c5b19a17c8045f7446aa9740
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>string</type><methodname>phpversion</methodname>
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<methodparam choice="opt"><type>string</type><parameter>extension</parameter></methodparam>
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<type class="union"><type>string</type><type>false</type></type><methodname>phpversion</methodname>
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<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>extension</parameter><initializer>&null;</initializer></methodparam>
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</methodsynopsis>
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<para>
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Returns a string containing the version of the currently running PHP
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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If the optional <parameter>extension</parameter> parameter is
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specified, <function>phpversion</function> returns the version of that
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extension, or &false; if there is no version information associated or
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the extension isn't enabled.
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Returns the current PHP version as a <type>string</type>.
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If a <type>string</type> argument is provided for
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<parameter>extension</parameter> parameter, <function>phpversion</function>
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returns the version of that extension, or &false; if there is no version
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information associated or the extension isn't enabled.
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</para>
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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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<row>
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<entry>8.0.0</entry>
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<entry>
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<parameter>extension</parameter> is nullable now.
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</entry>
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</row>
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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="examples">
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&reftitle.examples;
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<para>
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constants.
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</para>
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</note>
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<note>
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<para>
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Some extensions may define their own version number.
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However, most bundled extension will use the PHP version as their version number.
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</para>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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<member><function>version_compare</function></member>
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<member><function>phpinfo</function></member>
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<member><function>phpcredits</function></member>
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<member><function>php_logo_guid</function></member>
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<member><function>zend_version</function></member>
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</simplelist>
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</para>
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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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