SplFileObject::ftruncate
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplFileObject::ftruncate — Truncates the file to a given length
Description
public SplFileObject::ftruncate(int
$size): bool
Truncates the file to size bytes.
Parameters
-
size -
The size to truncate to.
Note:
If
sizeis larger than the file it is extended with null bytes.If
sizeis smaller than the file, the extra data will be lost.
Return Values
Returns true on success or false on failure.
Examples
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
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