PHP compare_stats函数代码示例

   Description: Gives information about a file
*/
/* test the effects of rename() on stats of file */
$file_path = dirname(__FILE__);
require "{$file_path}/file.inc";
/* create temp file */
$fp = fopen("{$file_path}/lstat_stat_variation1.tmp", "w");
// temp file
fclose($fp);
// renaming a file and check stat
echo "*** Testing stat() for files after being renamed ***\n";
$file_path = dirname(__FILE__);
$old_filename = "{$file_path}/lstat_stat_variation1.tmp";
$new_filename = "{$file_path}/lstat_stat_variation1a.tmp";
$old_stat = stat($old_filename);
clearstatcache();
var_dump(rename($old_filename, $new_filename));
$new_stat = stat($new_filename);
// compare the self stat
var_dump(compare_self_stat($old_stat));
var_dump(compare_self_stat($new_stat));
// compare the two stats
var_dump(compare_stats($old_stat, $old_stat, $all_stat_keys));
// clear the cache
clearstatcache();
echo "\n--- Done ---";
?>

<?php 
$file_path = dirname(__FILE__);
unlink("{$file_path}/lstat_stat_variation1a.tmp");

$dirname = "{$file_path}/stat_variation3";
$old_stat = stat($dirname);
clearstatcache();
sleep(2);
mkdir("{$dirname}/stat_variation3_subdir");
$file_handle = fopen("{$dirname}/stat_variation3a.tmp", "w");
fclose($file_handle);
$new_stat = stat($dirname);
// compare self stats
var_dump(compare_self_stat($old_stat));
var_dump(compare_self_stat($new_stat));
// compare the stats
$affected_members = array(9, 'mtime');
clearstatcache();
sleep(2);
var_dump(compare_stats($old_stat, $new_stat, $affected_members, "<"));
unlink("{$dirname}/stat_variation3a.tmp");
rmdir("{$dirname}/stat_variation3_subdir");
clearstatcache();
// comparing stats after the deletion of subdir and file
echo "-- Testing stat() for comparing stats after the deletion of subdir and file --\n";
$new_stat1 = stat($dirname);
// compare self stats
var_dump(compare_self_stat($new_stat1));
// compare the stats
var_dump(compare_stats($new_stat, $new_stat1, $all_stat_keys, "="));
clearstatcache();
echo "\n*** Done ***";
?>

/* Prototype: array lstat ( string $filename );
   Description: Gives information about a file or symbolic link

   Prototype: array stat ( string $filename );
   Description: Gives information about a file
*/
$file_path = dirname(__FILE__);
require "{$file_path}/file.inc";
/* test the effects on stats with creating file/subdir in a dir 
*/
/* create temp file */
mkdir("{$file_path}/lstat_stat_variation8/");
// temp dir
// creating and deleting subdir and files in the dir
echo "*** Testing stat() on dir after subdir and file is created in it ***\n";
$dirname = "{$file_path}/lstat_stat_variation8";
$old_stat = stat($dirname);
clearstatcache();
sleep(2);
mkdir("{$dirname}/lstat_stat_variation8_subdir");
$file_handle = fopen("{$dirname}/lstat_stat_variation8a.tmp", "w");
fclose($file_handle);
$new_stat = stat($dirname);
// compare self stats
var_dump(compare_self_stat($old_stat));
var_dump(compare_self_stat($new_stat));
// compare the stats
$affected_members = array(3, 9, 10, 'nlink', 'mtime', 'ctime');
clearstatcache();
var_dump(compare_stats($old_stat, $new_stat, $affected_members, "<"));
echo "\n--- Done ---";

 *  Description: Gives information about a file
 */
/* test the effects of writing to a file on the stats of the file */
$file_path = dirname(__FILE__);
require "{$file_path}/file.inc";
$filename = "{$file_path}/stat_variation2.tmp";
$file_handle = fopen($filename, "w");
// temp file
fclose($file_handle);
echo "*** Testing stat(): writing to a file ***\n";
// writing to an empty file
echo "-- Testing stat() on file after data is written in it --\n";
$old_stat = stat($filename);
clearstatcache();
sleep(2);
$file_handle = fopen($filename, "w");
// temp file
fwrite($file_handle, "Hello World");
fclose($file_handle);
$new_stat = stat($filename);
// compare self stats
var_dump(compare_self_stat($old_stat));
var_dump(compare_self_stat($new_stat));
// compare the stats
$comp_arr = array(7, 'size');
var_dump(compare_stats($old_stat, $new_stat, $comp_arr, "<"));
clearstatcache();
echo "\n*** Done ***";
?>

/* Prototype: bool copy ( string $source, string $dest );
   Description: Makes a copy of the file source to dest.
     Returns TRUE on success or FALSE on failure.
*/
/* Test copy(): checking stat of file before and after after copy operation */
$file_path = dirname(__FILE__);
require $file_path . "/file.inc";
echo "*** Test copy() function: stat of file before and after copy ***\n";
$src_file_name = $file_path . "/copy_variation18.tmp";
$file_handle = fopen($src_file_name, "w");
fwrite($file_handle, str_repeat("Hello2world...\n", 100));
fclose($file_handle);
$dest_file_name = $file_path . "/copy_copy_variation18.tmp";
clearstatcache();
$stat_before_copy = stat($src_file_name);
clearstatcache();
echo "Copy operation => ";
var_dump(copy($src_file_name, $dest_file_name));
$stat_after_copy = stat($src_file_name);
clearstatcache();
// compare all stat fields except access time
$stat_keys_to_compare = array("dev", "ino", "mode", "nlink", "uid", "gid", "rdev", "size", "mtime", "ctime", "blksize", "blocks");
echo "Comparing the stats of file before and after copy operation => ";
var_dump(compare_stats($stat_before_copy, $stat_after_copy, $stat_keys_to_compare));
echo "*** Done ***\n";
?>

<?php 
error_reporting(0);
unlink(dirname(__FILE__) . "/copy_copy_variation18.tmp");
unlink(dirname(__FILE__) . "/copy_variation18.tmp");

<?php

/* Prototype: bool rename ( string $oldname, string $newname [, resource $context] );
   Description: Renames a file or directory
*/
echo "*** Testing rename() on non-existing file ***\n";
$file_path = dirname(__FILE__);
require "{$file_path}/file.inc";
$src_name = "{$file_path}/rename_basic.tmp";
$dest_name = "{$file_path}/rename_basic_new.tmp";
// create the file
$fp = fopen($src_name, "w");
$old_stat = stat($src_name);
fclose($fp);
var_dump(rename($src_name, $dest_name));
// expecting true
var_dump(file_exists($src_name));
// expecting false
var_dump(file_exists($dest_name));
// expecting true
$new_stat = stat("{$file_path}/rename_basic_new.tmp");
// checking statistics of old and renamed file - both should be same except ctime
$keys_to_compare = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, "dev", "ino", "mode", "nlink", "uid", "gid", "rdev", "size", "atime", "mtime", "blksize", "blocks");
var_dump(compare_stats($old_stat, $new_stat, $keys_to_compare));
?>
===Done===
<?php 
unlink(dirname(__FILE__) . "/rename_basic_new.tmp");

fclose($file_handle);
// stat of the file created
$file_stat = stat($filename);
sleep(2);
// now new stat of the dir after file is created
$new_dir_stat = stat($dirname);
clearstatcache();
// stat contains 13 different values stored twice, can be accessed using
// numeric and named keys, compare them to see they are same
echo "*** Testing stat(): validating the values stored in stat ***\n";
// Initial stat values
var_dump(compare_self_stat($file_stat));
//expect true
var_dump(compare_self_stat($dir_stat));
//expect true
// New stat values taken after creation of file
var_dump(compare_self_stat($new_dir_stat));
// expect true
// compare the two stat values, initial stat and stat recorded after
// creating file, also dump the value of stats
echo "*** Testing stat(): comparing stats (recorded before and after file creation) ***\n";
echo "-- comparing difference in dir stats before and after creating file in it --\n";
$affected_elements = array(9, 'mtime');
var_dump(compare_stats($dir_stat, $new_dir_stat, $affected_elements, '!=', true));
// expect true
echo "*** Testing stat(): for the return value ***\n";
var_dump(is_array(stat($filename)));
echo "\n---Done---";
$file_path = dirname(__FILE__);
unlink("{$file_path}/stat_basic/stat_basic.tmp");
rmdir("{$file_path}/stat_basic");

$link_stat = lstat($sym_linkname);
sleep(2);
// new stat of the file, after a softlink to this file is created
$new_file_stat = stat($filename);
clearstatcache();
// stat contains 13 different values stored twice, can be accessed using
// numeric and named keys, compare them to see they are same
echo "*** Testing stat() and lstat() : validating the values stored in stat ***\n";
// Initial stat values
var_dump(compare_self_stat($file_stat));
//expect true
var_dump(compare_self_stat($dir_stat));
//expect true
var_dump(compare_self_stat($link_stat));
// expect true
// New stat values taken after creation of file & link
var_dump(compare_self_stat($new_file_stat));
//expect true
var_dump(compare_self_stat($new_dir_stat));
// expect true
// compare the two stat values, initial stat and stat recorded after
// creating files and link, also dump the value of stats
echo "*** Testing stat() and lstat() : comparing stats (recorded before and after file/link creation) ***\n";
echo "-- comparing difference in dir stats before and after creating file in it --\n";
$affected_elements = array(9, 10, 'mtime', 'ctime');
var_dump(compare_stats($dir_stat, $new_dir_stat, $affected_elements, '!=', true));
// expect true
echo "-- comparing difference in file stats before and after creating link to it --\n";
var_dump(compare_stats($file_stat, $new_file_stat, $all_stat_keys, "==", true));
// expect true
echo "Done\n";

/* test the effects of is_link() on stats of hard link */
$file_path = dirname(__FILE__);
require "{$file_path}/file.inc";
/* create temp file & link */
$filename = "{$file_path}/lstat_stat_variation14.tmp";
$fp = fopen($filename, "w");
// temp file
fclose($fp);
echo "*** Checking lstat() and stat() on hard link ***\n";
$linkname = "{$file_path}/lstat_stat_variation14_hard.tmp";
//ensure that link doesn't exists
@unlink($linkname);
// create the link
var_dump(link($filename, $linkname));
$file_stat = stat($filename);
$link_stat = lstat($linkname);
// compare self stats
var_dump(compare_self_stat($file_stat));
var_dump(compare_self_stat($link_stat));
// compare the stat
var_dump(compare_stats($file_stat, $link_stat, $all_stat_keys));
// clear the stat
clearstatcache();
echo "\n--- Done ---";
?>

<?php 
error_reporting(0);
$file_path = dirname(__FILE__);
unlink("{$file_path}/lstat_stat_variation14_hard.tmp");
unlink("{$file_path}/lstat_stat_variation14.tmp");