Truncates a file to a given length
Syntax
ftruncate ( resource $handle , int $size ) : bool
Parameters
handle
The file pointer.
Note: The handle must be open for writing.
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
Returns TRUE on success or FALSE on failure.
Examples
1
<? $filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/file.txt'; $mode = 'r+'; $handle = fopen($filename, $mode); echo fread($handle, filesize($filename)) . PHP_EOL; ftruncate($handle, 2); rewind($handle); echo fread($handle, filesize($filename)); fclose($handle); ?>
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