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gzseek

gzseek

Seek on a gz-file pointer

int **gzseek** resource $stream int $offset int $whence

Sets the file position indicator for the given file pointer to the given offset byte into the file stream. Equivalent to calling (in C) . gzseek(zp, offset, SEEK_SET)

If the file is opened for reading, this function is emulated but can be extremely slow. If the file is opened for writing, only forward seeks are supported; then compresses a sequence of zeroes up to the new starting position. gzseek

stream The gz-file pointer. It must be valid, and must point to a file successfully opened by . gzopen

offsetThe seeked offset.

whence values are:

  `whence``SEEK_SET``offset``SEEK_CUR``offset`


   If  is not specified, it is assumed to be
   .
  `whence``SEEK_SET`

Upon success, returns 0; otherwise, returns -1. Note that seeking past EOF is not considered an error.

Voorbeeld: example

<?php
$gz = gzopen('somefile.gz', 'r');
gzseek($gz,2);
echo gzgetc($gz);
gzclose($gz);
?>

gztell``gzrewind

Vorige ← gzrewind Volgende gztell →

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