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  <refentry id="function.fseek">
   <refnamediv>
    <refname>fseek</refname>
    <refpurpose>Seeks on a file pointer</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>int</type><methodname>fseek</methodname>
      <methodparam><type>resource</type><parameter>handle</parameter></methodparam>
      <methodparam><type>int</type><parameter>offset</parameter></methodparam>
      <methodparam choice="opt"><type>int</type><parameter>whence</parameter></methodparam>
     </methodsynopsis>
    <para>
     Sets the file position indicator for the file referenced by
     <parameter>handle</parameter>.The new position, measured in bytes
     from the beginning of the file, is obtained by adding
     <parameter>offset</parameter> to the position specified by
     <parameter>whence</parameter>, whose values are defined as
     follows:
     <simplelist>
      <member><constant>SEEK_SET</constant> - Set position equal to <parameter>offset</parameter> bytes.</member>
      <member><constant>SEEK_CUR</constant> - Set position to current location plus <parameter>offset</parameter>.</member>
      <member><constant>SEEK_END</constant> - Set position to end-of-file plus <parameter>offset</parameter>. 
      (To move to a position before the end-of-file, you need to pass a negative 
      value in <parameter>offset</parameter>.)</member>
     </simplelist>
    </para>
    <para>If <parameter>whence</parameter> is not specified, it is assumed to be
    <constant>SEEK_SET</constant>.
    </para>
    <para>
     Upon success, returns 0; otherwise, returns -1. Note that seeking
     past EOF is not considered an error.
    </para>
    <para>
     May not be used on file pointers returned by
     <function>fopen</function> if they use the "http://" or "ftp://"
     formats.
    </para>
    <note>
     <para>
      The <parameter>whence</parameter> argument was added after PHP 4.0.0.
     </para>
    </note>
    <para>
     See also <function>ftell</function> and
     <function>rewind</function>.
    </para>
   </refsect1>
  </refentry>

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