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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
<refentry id="function.strtr">
<refnamediv>
<refname>strtr</refname>
<refpurpose>Translate certain characters</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>strtr</methodname>
<methodparam><type>string</type><parameter>str</parameter></methodparam>
<methodparam><type>string</type><parameter>from</parameter></methodparam>
<methodparam><type>string</type><parameter>to</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>string</type><methodname>strtr</methodname>
<methodparam><type>string</type><parameter>str</parameter></methodparam>
<methodparam><type>array</type><parameter>replace_pairs</parameter></methodparam>
</methodsynopsis>
<para>
This function returns a copy of <parameter>str</parameter>,
translating all occurrences of each character in
<parameter>from</parameter> to the corresponding character in
<parameter>to</parameter>.
</para>
<para>
If <parameter>from</parameter> and <parameter>to</parameter> are
different lengths, the extra characters in the longer of the two
are ignored.
<example>
<title><function>strtr</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$addr = strtr($addr, "", "aao");
?>
]]>
</programlisting>
</example>
</para>
<para>
<function>strtr</function> may be called with only two
arguments. If called with two arguments it behaves in a new way:
<parameter>from</parameter> then has to be an array that contains
string -> string pairs that will be replaced in the source
string. <function>strtr</function> will always look for the
longest possible match first and will *NOT* try to replace stuff
that it has already worked on.
</para>
<example>
<title><function>strtr</function> example with two arguments</title>
<programlisting role="php">
<![CDATA[
<?php
$trans = array("hello" => "hi", "hi" => "hello");
echo strtr("hi all, I said hello", $trans);
?>
]]>
</programlisting>
<para>
This will show:
</para>
<screen>
<![CDATA[
hello all, I said hi
]]>
</screen>
</example>
<note>
<simpara>
This optional <parameter>to</parameter> and
<parameter>from</parameter> parameters were added in PHP 4.0.0
</simpara>
</note>
<para>
See also <function>ereg_replace</function>.
</para>
</refsect1>
</refentry>
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