reference/array/functions/array-search.xml
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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>array_search</methodname>
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<type class="union"><type>int</type><type>string</type><type>false</type></type><methodname>array_search</methodname>
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<methodparam><type>mixed</type><parameter>needle</parameter></methodparam>
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<methodparam><type>array</type><parameter>haystack</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>strict</parameter><initializer>&false;</initializer></methodparam>
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If <parameter>needle</parameter> is found in <parameter>haystack</parameter>
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more than once, the first matching key is returned. To return the keys for
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all matching values, use <function>array_keys</function> with the optional
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<parameter>search_value</parameter> parameter instead.
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<parameter>filter_value</parameter> parameter instead.
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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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<para>
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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>5.3.0</entry>
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<entry>
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As with all internal PHP functions as of 5.3.0,
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<function>array_search</function> returns &null; if invalid parameters
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are passed to it.
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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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</para>
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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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</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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