FTRUNCATE(3) 1 FTRUNCATE(3)
ftruncate - Truncates a file to a given length
SYNOPSIS
bool ftruncate (resource $handle, int $size)
DESCRIPTION
Takes the filepointer, $handle, and truncates the file to length, $size.
PARAMETERS
o $handle
- The file pointer.
Note
The $handle must be open for writing.
o $size
- The size to truncate to.
Note
If $size is larger than the file then the file is extended with null bytes.
If $size is smaller than the file then the file is truncated to that size.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
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);
?>
NOTES
Note
The file pointer is not changed.
SEE ALSO
fopen(3), fseek(3).
PHP Documentation Group FTRUNCATE(3)
