mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-22 03:48:55 +00:00
5b9fc29465
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@78496 c90b9560-bf6c-de11-be94-00142212c4b1
100 lines
3.4 KiB
XML
100 lines
3.4 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!-- $Revision: 1.2 $ -->
|
|
<!-- splitted from ./en/functions/regex.xml, last change in rev 1.2 -->
|
|
<refentry id="function.ereg">
|
|
<refnamediv>
|
|
<refname>ereg</refname>
|
|
<refpurpose>Regular expression match</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<methodsynopsis>
|
|
<type>int</type><methodname>ereg</methodname>
|
|
<methodparam><type>string</type><parameter>pattern</parameter></methodparam>
|
|
<methodparam><type>string</type><parameter>string</parameter></methodparam>
|
|
<methodparam choice="opt"><type>array</type><parameter>regs</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<note>
|
|
<para>
|
|
<function>preg_match</function>, which uses a Perl-compatible
|
|
regular expression syntax, is often a faster alternative to
|
|
<function>ereg</function>.
|
|
</para>
|
|
</note>
|
|
<simpara>
|
|
Searches a <parameter>string</parameter> for matches to the regular
|
|
expression given in <parameter>pattern</parameter>.
|
|
</simpara>
|
|
<simpara>
|
|
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>. $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. $regs[0] will
|
|
contain a copy of the complete string matched.
|
|
</simpara>
|
|
<note>
|
|
<simpara>
|
|
Up to (and including) PHP 4.1.0 <literal>$regs</literal> will be
|
|
filled with exactly ten elements, even though more or fewer than
|
|
ten parenthesized substrings may actually have matched. This has
|
|
no effect on <function>ereg</function>'s ability to match more
|
|
substrings. If no matches are found, <literal>$regs</literal>
|
|
will not be altered by <function>ereg</function>.
|
|
</simpara>
|
|
</note>
|
|
<simpara>
|
|
Searching is case sensitive.
|
|
</simpara>
|
|
<simpara>
|
|
Returns &true; if a match for <parameter>pattern</parameter> was
|
|
found in <parameter>string</parameter>, or &false; if no matches
|
|
were found or an error occurred.
|
|
</simpara>
|
|
<para>
|
|
The following code snippet takes a date in ISO format
|
|
(YYYY-MM-DD) and prints it in DD.MM.YYYY format:
|
|
<example>
|
|
<title><function>ereg</function> Example</title>
|
|
<programlisting role="php">
|
|
<![CDATA[
|
|
if (ereg ("([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})", $date, $regs)) {
|
|
echo "$regs[3].$regs[2].$regs[1]";
|
|
} else {
|
|
echo "Invalid date format: $date";
|
|
}
|
|
]]>
|
|
</programlisting>
|
|
</example>
|
|
</para>
|
|
<simpara>
|
|
See also <function>eregi</function>,
|
|
<function>ereg_replace</function>,
|
|
<function>eregi_replace</function>, and
|
|
<function>preg_match</function>.
|
|
</simpara>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../../../../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|