(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplFileObject::ftruncate — Truncates the file to a given length
size
The size to truncate to.
Note:
If
size
is larger than the file it is extended with null bytes.If
size
is smaller than the file, the extra data will be lost.
Example #1 SplFileObject::ftruncate() example
<?php// Create file containing "Hello World!"$file = new SplFileObject("/tmp/ftruncate", "w+");$file->fwrite("Hello World!");// Truncate to 5 bytes$file->ftruncate(5);// Rewind and read data$file->rewind();echo $file->fgets();?>
The above example will output something similar to:
Hello