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rewind.xml
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rewind.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.rewind" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>rewind</refname>
<refpurpose>Rewind the position of a file pointer</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>rewind</methodname>
<methodparam><type>resource</type><parameter>stream</parameter></methodparam>
</methodsynopsis>
<para>
Sets the file position indicator for <parameter>stream</parameter>
to the beginning of the file stream.
</para>
<note>
<para>
If you have opened the file in append ("a" or "a+") mode, any data you
write to the file will always be appended, regardless of the file pointer position.
</para>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>stream</parameter></term>
<listitem>
<para>
The file pointer must be valid, and must point to a file
successfully opened by <function>fopen</function>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>rewind</function> overwriting example</title>
<programlisting role="php">
<![CDATA[
<?php
$handle = fopen('output.txt', 'r+');
fwrite($handle, 'Really long sentence.');
rewind($handle);
fwrite($handle, 'Foo');
rewind($handle);
echo fread($handle, filesize('output.txt'));
fclose($handle);
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Foolly long sentence.
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>fread</function></member>
<member><function>fseek</function></member>
<member><function>ftell</function></member>
<member><function>fwrite</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->