Truncates a file to a given length
Syntax
ftruncate ( resource $handle , int $size ) : bool
Parameters
handleThe file pointer.
Note: The handle must be open for writing.
sizeThe 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);
?>Hello He
