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<refentry xml:id="function.mb-eregi" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>mb_eregi</refname>
  <refpurpose>Regular expression match ignoring case with multibyte support</refpurpose>
 </refnamediv>
   
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>mb_eregi</methodname>
   <methodparam><type>string</type><parameter>pattern</parameter></methodparam>
   <methodparam><type>string</type><parameter>string</parameter></methodparam>
   <methodparam choice="opt"><type>array</type><parameter role="reference">matches</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <simpara>
   Executes the case insensitive regular expression match with multibyte support.
  </simpara>
 </refsect1>
 
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>pattern</parameter></term>
     <listitem>
      <para>
       The regular expression pattern.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>string</parameter></term>
     <listitem>
      <para>
       The <type>string</type> being searched.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>matches</parameter></term>
     <listitem>
      <para>
       If matches are found for parenthesized substrings of
       <parameter>pattern</parameter> and the function is called with the
       third argument <parameter>matches</parameter>, the matches will be stored
       in the elements of the array <parameter>matches</parameter>.
       If no matches are found, <parameter>matches</parameter> is set to an empty
       array.
      </para>
      <para>
       <varname>$matches[1]</varname> will contain the substring which starts at
       the first left parenthesis; <varname>$matches[2]</varname> will contain
       the substring starting at the second, and so on.
       <varname>$matches[0]</varname> will contain a copy of the complete string
       matched.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns whether <parameter>pattern</parameter> matches <parameter>string</parameter>.
  </para>
 </refsect1>

 <refsect1 role="changelog"><!-- {{{ -->
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>8.0.0</entry>
      <entry>
       This function returns &true; on success now. Previously, it returned the byte length
       of the matched string if a match for <parameter>pattern</parameter> was found in
       <parameter>string</parameter> and <parameter>matches</parameter> was passed.
       If the optional parameter <parameter>matches</parameter> was not passed or
       the length of the matched string was <literal>0</literal>, this function returned <literal>1</literal>.
      </entry>
     </row>
     <row>
      <entry>7.1.0</entry>
      <entry>
       <function>mb_eregi</function> will now set <parameter>matches</parameter> to
       an empty <type>array</type>, if nothing matched. Formerly,
       <parameter>matches</parameter> was not modified in that case.
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1><!-- }}} -->

 <refsect1 role="notes">
  &reftitle.notes;
  
  &note.mbstring.encoding.internal;
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>mb_regex_encoding</function></member>
    <member><function>mb_ereg</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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