<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<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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