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--TEST--
Test filesize() function: usage variations - file size after truncate
--SKIPIF--
<?php
if (substr(PHP_OS, 0, 3) == 'WIN') {
die('skip only valid for Linux');
}
--FILE--
<?php
/*
Prototype : int filesize ( string $filename );
Description : Returns the size of the file in bytes, or FALSE
(and generates an error of level E_WARNING) in case of an error.
*/
$file_path = dirname(__FILE__);
echo "*** Testing filesize(): usage variations ***\n";
$filename = $file_path."/filesize_variation3.tmp";
$file_handle = fopen($filename, "w");
fwrite($file_handle, str_repeat("Hello,World ", 1000) ); // create file of size 12000 bytes
fclose($file_handle);
echo "-- Testing filesize() after truncating the file to a new length --\n";
// truncate the file created earlier in subdir, the size of the file is 12000bytes
// truncate the same file, in the loop , each time with the decrement in size by 1200 bytes,
// until -1200bytes size
for($size = filesize($filename); $size>=-1200; $size-=1200) {
$file_handle = fopen($filename, "r+");
var_dump( ftruncate($file_handle, $size) );
fclose($file_handle);
var_dump( filesize($filename) );
clearstatcache();
}
echo "*** Done ***\n";
?>
--CLEAN--
<?php
$file_path = dirname(__FILE__);
unlink($file_path."/filesize_variation3.tmp");
?>
--EXPECTF--
*** Testing filesize(): usage variations ***
-- Testing filesize() after truncating the file to a new length --
bool(true)
int(12000)
bool(true)
int(10800)
bool(true)
int(9600)
bool(true)
int(8400)
bool(true)
int(7200)
bool(true)
int(6000)
bool(true)
int(4800)
bool(true)
int(3600)
bool(true)
int(2400)
bool(true)
int(1200)
bool(true)
int(0)
Warning: ftruncate(): Negative size is not supported in %s on line %d
bool(false)
int(0)
*** Done ***
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