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PHP ftruncate() Function
Complete PHP Filesystem Reference
Definition and Usage
The ftruncate() function truncates an open file to the specified length.
Returns TRUE on success, or FALSE on failure.
Syntax
ftruncate(file,size)
| Parameter | Description |
|---|---|
| file | Required. Specifies the open file to truncate |
| size | Required. Specifies the new file size |
Example
<?php
//check filesize
echo filesize("test.txt");
echo "<br />";
$file = fopen("test.txt", "a+");
ftruncate($file,100);
fclose($file);
//Clear cache and check filesize again
clearstatcache();
echo filesize("test.txt");
?>
//check filesize
echo filesize("test.txt");
echo "<br />";
$file = fopen("test.txt", "a+");
ftruncate($file,100);
fclose($file);
//Clear cache and check filesize again
clearstatcache();
echo filesize("test.txt");
?>
The output of the code above will be:
792
100
100
Complete PHP Filesystem Reference
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Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.