mirror of
https://github.com/sigmasternchen/php-doc-en
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4641f42abc
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@165617 c90b9560-bf6c-de11-be94-00142212c4b1
77 lines
2 KiB
XML
77 lines
2 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.ftell">
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<refnamediv>
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<refname>ftell</refname>
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<refpurpose>Tells file pointer read/write position</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>ftell</methodname>
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<methodparam><type>resource</type><parameter>handle</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the position of the file pointer referenced by
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<parameter>handle</parameter>; i.e., its offset into the
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file stream.
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</para>
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<para>
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If an error occurs, returns &false;.
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</para>
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<para>
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The file pointer must be valid, and must point to a file
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successfully opened by <function>fopen</function> or
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<function>popen</function>.
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<function>ftell</function> gives undefined results for append-only streams
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(opened with "a" flag).
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</para>
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<para>
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<example>
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<title><function>ftell</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// opens a file and read some data
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$fp = fopen("/etc/passwd", "r");
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$data = fgets($fp, 12);
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// where are we ?
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echo ftell($fp); // 11
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fclose($fp);
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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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<para>
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See also <function>fopen</function>, <function>popen</function>,
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<function>fseek</function>, and <function>rewind</function>.
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</para>
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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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