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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.10 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.fprintf">
<refnamediv>
<refname>fprintf</refname>
<refpurpose>Write a formatted string to a stream</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>fprintf</methodname>
<methodparam><type>resource</type><parameter>handle</parameter></methodparam>
<methodparam><type>string</type><parameter>format</parameter></methodparam>
<methodparam choice="opt"><type>mixed</type><parameter>args</parameter></methodparam>
<methodparam choice="opt"><type>mixed</type><parameter>...</parameter></methodparam>
</methodsynopsis>
<para>
Write a string produced according to <parameter>format</parameter> to the
stream resource specified by <parameter>handle</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>handle</parameter></term>
<listitem>
&fs.file.pointer;
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>format</parameter></term>
<listitem>
<para>
See <function>sprintf</function> for a description of
<parameter>format</parameter>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>args</parameter></term>
<listitem>
<para>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>...</parameter></term>
<listitem>
<para>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the length of the string written.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>fprintf</function>: zero-padded integers</title>
<programlisting role="php">
<![CDATA[
<?php
if (!($fp = fopen('date.txt', 'w'))) {
return;
}
fprintf($fp, "%04d-%02d-%02d", $year, $month, $day);
// will write the formatted ISO date to date.txt
?>
]]>
</programlisting>
</example>
<example>
<title><function>fprintf</function>: formatting currency</title>
<programlisting role="php">
<![CDATA[
<?php
if (!($fp = fopen('currency.txt', 'w'))) {
return;
}
$money1 = 68.75;
$money2 = 54.35;
$money = $money1 + $money2;
// echo $money will output "123.1";
$len = fprintf($fp, '%01.2f', $money);
// will write "123.10" to currency.txt
echo "wrote $len bytes to currency.txt";
// use the return value of fprintf to determine how many bytes we wrote
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>printf</function></member>
<member><function>sprintf</function></member>
<member><function>sscanf</function></member>
<member><function>fscanf</function></member>
<member><function>vsprintf</function></member>
<member><function>number_format</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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