preg-last-error.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 3c68e46cea928171d6de1afcae519e88f5949323 Maintainer: takagi Status: ready -->
<!-- Credits: mumumu -->
<refentry xml:id="function.preg-last-error" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>preg_last_error</refname>
  <refpurpose>直近の PCRE 正規表現処理のエラーコードを返す</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>int</type><methodname>preg_last_error</methodname>
   <void />
  </methodsynopsis>
  <para>
   直近の PCRE 正規表現処理のエラーコードを返します。
  </para>
  <para>
   <example>
    <title><function>preg_last_error</function> の例</title>
    <programlisting role="php">
<![CDATA[
<?php

preg_match('/(?:\D+|<\d+>)*[!?]/', 'foobar foobar foobar');

if (preg_last_error() == PREG_BACKTRACK_LIMIT_ERROR) {
    echo 'Backtrack limit was exhausted!';
}

?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Backtrack limit was exhausted!
]]>
    </screen>
   </example>
  </para>
 </refsect1>
  
 <refsect1 role="parameters">
  &reftitle.parameters;
  &no.function.parameters;
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   以下の定数のいずれかを返します (<link
   linkend="pcre.constants">別のページで説明します</link>)。
   <simplelist>
    <member><constant>PREG_NO_ERROR</constant></member>
    <member><constant>PREG_INTERNAL_ERROR</constant></member>
    <member><constant>PREG_BACKTRACK_LIMIT_ERROR</constant> (<link
    linkend="ini.pcre.backtrack-limit">pcre.backtrack_limit</link> も参照ください)</member>
    <member><constant>PREG_RECURSION_LIMIT_ERROR</constant> (<link
    linkend="ini.pcre.recursion-limit">pcre.recursion_limit</link> も参照ください)</member>
    <member><constant>PREG_BAD_UTF8_ERROR</constant></member>
    <member><constant>PREG_BAD_UTF8_OFFSET_ERROR</constant></member>
    <member><constant>PREG_JIT_STACKLIMIT_ERROR</constant></member>
   </simplelist>
  </para>
 </refsect1>

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

</refentry>

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