Truncates a file to a given length
$stream
$size
Takes the filepointer, stream, and truncates the file to length, size.
stream
size
The file pointer.
Note: The stream must be open for writing.
Note:
The stream must be open for writing.
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.
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.
Returns true on success or false on failure.
true
false
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); ?>
Note: The file pointer is not changed.
The file pointer is not changed.