gzseek

Syntax

int gzseek ( resource zp, int offset )

Popis

Príkaz jazyka PHP
Seek on a gz-file pointer

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; gzseek then compresses a sequence of zeroes up to the new starting position.

zp - The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen().
offset - The seeked offset.

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

Príklad

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

Pozri aj

gztell, gzrewind