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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 331340 $ -->
<refentry xml:id="function.mb-strpos" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>mb_strpos</refname>
<refpurpose>Find position of first occurrence of string in a string</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>mb_strpos</methodname>
<methodparam><type>string</type><parameter>haystack</parameter></methodparam>
<methodparam><type>string</type><parameter>needle</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>offset</parameter><initializer>0</initializer></methodparam>
<methodparam choice="opt"><type>string</type><parameter>encoding</parameter><initializer>mb_internal_encoding()</initializer></methodparam>
</methodsynopsis>
<para>
Finds position of the first occurrence of a <type>string</type> in a <type>string</type>.
</para>
<para>
Performs a multi-byte safe
<function>strpos</function> operation based on number of
characters. The first character's position is 0, the second character
position is 1, and so on.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>haystack</parameter></term>
<listitem>
<para>
The <type>string</type> being checked.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>needle</parameter></term>
<listitem>
<para>
The string to find in <parameter>haystack</parameter>. In contrast
with <function>strpos</function>, numeric values are not applied
as the ordinal value of a character.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>offset</parameter></term>
<listitem>
<para>
The search offset. If it is not specified, 0 is used.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>encoding</parameter></term>
<listitem>
&mbstring.encoding.parameter;
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the numeric position of
the first occurrence of <parameter>needle</parameter> in the
<parameter>haystack</parameter> <type>string</type>. If
<parameter>needle</parameter> is not found, it returns &false;.
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>mb_internal_encoding</function></member>
<member><function>strpos</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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