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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 330654 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.eregi">
<refnamediv>
<refname>eregi</refname>
<refpurpose>Case insensitive regular expression match</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>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">regs</parameter></methodparam>
</methodsynopsis>
<para>
This function is identical to <function>ereg</function> except that it
ignores case distinction when matching alphabetic characters.
</para>
&warn.deprecated.function-5-3-0.removed-6-0-0;
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>pattern</parameter></term>
<listitem>
<para>
Case insensitive regular expression.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>string</parameter></term>
<listitem>
<para>
The input string.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>regs</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>regs</parameter>, the matches will be stored
in the elements of the array <parameter>regs</parameter>.
</para>
<para>
$regs[1] will contain the substring which starts at the first left
parenthesis; $regs[2] will contain the substring starting at the
second, and so on. $regs[0] will contain a copy of the complete string
matched.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the length of the matched string if a match for
<parameter>pattern</parameter> was found in <parameter>string</parameter>,
or &false; if no matches were found or an error occurred.
</para>
<para>
If the optional parameter <parameter>regs</parameter> was not passed or
the length of the matched string is 0, this function returns 1.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>eregi</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$string = 'XYZ';
if (eregi('z', $string)) {
echo "'$string' contains a 'z' or 'Z'!";
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
¬e.regex.deprecated;
<tip>
<para>
<function>eregi</function> is deprecated as of PHP 5.3.0. <function>preg_match</function>
with the <literal>i</literal> (<constant>PCRE_CASELESS</constant>) modifier is the suggested alternative.
</para>
</tip>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>ereg</function></member>
<member><function>ereg_replace</function></member>
<member><function>eregi_replace</function></member>
<member><function>preg_match</function></member>
<member><function>stripos</function></member>
<member><function>stristr</function></member>
<member><function>quotemeta</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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