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https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@146748 c90b9560-bf6c-de11-be94-00142212c4b1
104 lines
3.3 KiB
XML
104 lines
3.3 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.7 $ -->
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<!-- splitted from ./en/functions/filesystem.xml, last change in rev 1.2 -->
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<refentry id="function.fpassthru">
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<refnamediv>
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<refname>fpassthru</refname>
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<refpurpose>Output all remaining data on a file pointer</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>int</type><methodname>fpassthru</methodname>
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<methodparam><type>resource</type><parameter>handle</parameter></methodparam>
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</methodsynopsis>
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<simpara>
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Reads to EOF on the given file pointer from the current position and
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writes the results to the output buffer.
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</simpara>
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<simpara>
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If an error occurs, <function>fpassthru</function> returns
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&false;. Otherwise, <function>fpassthru</function> returns
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the number of characters read from <parameter>handle</parameter>
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and passed through to the output.
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</simpara>
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<simpara>
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The file pointer must be valid, and must point to a file successfully
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opened by <function>fopen</function>, <function>popen</function>, or
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<function>fsockopen</function>. You may need to call
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<function>rewind</function> to reset the file pointer to the beginning of
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the file if you have already written data to the file. The file is
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closed when <function>fpassthru</function> is done reading it (leaving
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<parameter>handle</parameter> useless).
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</simpara>
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<simpara>
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If you just want to dump the contents of a file to the output buffer,
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without first modifying it or seeking to a particular offset, you may
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want to use the <function>readfile</function>, which saves you
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the <function>fopen</function> call.
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</simpara>
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<note>
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<para>
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When using <function>fpassthru</function> on a binary file on Windows
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systems, you should make sure to open the file in binary mode by
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appending a <literal>b</literal> to the mode used in the call to
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<function>fopen</function>.
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</para>
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<para>
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You are encouraged to use the <literal>b</literal> flag when dealing
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with binary files, even if your system does not require it, so that
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your scripts will be more portable.
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</para>
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</note>
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<para>
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<example>
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<title>Using <function>fpassthru</function> with binary files</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// open the file in a binary mode
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$name = ".\public\dev\img\ok.png";
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$fp = fopen($name, 'rb');
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// send the right headers
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header("Content-Type: image/png");
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header("Content-Length: " . filesize($name));
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// dump the picture and stop the script
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fpassthru($fp);
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exit;
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<simpara>
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See also <function>readfile</function>,
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<function>fopen</function>, <function>popen</function>, and
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<function>fsockopen</function>
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</simpara>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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