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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.strtoupper">
<refnamediv>
<refname>strtoupper</refname>
<refpurpose>Make a string uppercase</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>strtoupper</methodname>
<methodparam><type>string</type><parameter>string</parameter></methodparam>
</methodsynopsis>
<para>
Returns <parameter>string</parameter> with all ASCII alphabetic characters
converted to uppercase.
</para>
<para>
Bytes in the range <literal>"a"</literal> (0x61) to <literal>"z"</literal>
(0x7a) will be converted to the corresponding uppercase letter by subtracting
32 from each byte value.
</para>
<para>
This can be used to convert ASCII characters within strings encoded with
UTF-8, since multibyte UTF-8 characters will be ignored. To convert multibyte
non-ASCII characters, use <function>mb_strtoupper</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>string</parameter></term>
<listitem>
<para>
The input string.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the uppercased string.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
&strings.changelog.ascii-case-conversion;
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>strtoupper</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtoupper($str);
echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
¬e.bin-safe;
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>strtolower</function></member>
<member><function>ucfirst</function></member>
<member><function>ucwords</function></member>
<member><function>mb_strtoupper</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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