(PHP 4, PHP 5)
ftruncate — Truncates a file to a given length
$handle
, int $size
)
Takes the filepointer, handle, and truncates the file to
length, size.
handleThe file pointer.
Notă:
The
handlemust be open for writing.
sizeThe size to truncate to.
Notă:
If
sizeis larger than the file then the file is extended with null bytes.If
sizeis smaller than the file then the file is truncated to that size.
Întoarce valoarea TRUE în cazul
succesului sau FALSE în cazul eșecului.
| Versiunea | Descriere |
|---|---|
| 4.3.3 |
Prior to this release ftruncate() returned an
integer value of 1 on success, instead of
boolean TRUE.
|
Example #1 File truncation example
<?php
$filename = 'lorem_ipsum.txt';
$handle = fopen($filename, 'r+');
ftruncate($handle, rand(1, filesize($filename)));
rewind($handle);
echo fread($handle, filesize($filename));
fclose($handle);
?>
Notă:
The file pointer is not changed.