<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
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  <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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