int fseek ( resource handle, int offset [, int whence] )
Sets the file position indicator for the file referenced by
handle. The new position, measured in bytes
from the beginning of the file, is obtained by adding
offset to the position specified by
whence, whose values are defined as
follows:
SEEK_SET - Set position equal to offset bytes.
SEEK_CUR - Set position to current location plus offset.
SEEK_END - Set position to end-of-file plus offset.
(To move to a position before the end-of-file, you need to pass a negative
value in offset.)
If whence is not specified, it is assumed to be
SEEK_SET.
Upon success, returns 0; otherwise, returns -1. Note that seeking
past EOF is not considered an error.
Example 1. fseek() example
<?php
$fp = fopen('somefile.txt');
// read some data $data = fgets($fp, 4096);
// move back to the beginning of the file // same as rewind($fp); fseek($fp, 0);
?>
May not be used on file pointers returned by
fopen() if they use the "http://" or "ftp://"
formats. fseek() gives also undefined results for
append-only streams (opened with "a" flag).
Note:
The whence argument was added after PHP 4.0.0.
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Php fseek syntax tutorial
php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.
