1--TEST--
2Testing unlink() function : error conditions
3--SKIPIF--
4<?php
5if (substr(PHP_OS, 0, 3) == 'WIN') {
6    die('skip.. only on Linux');
7}
8?>
9--FILE--
10<?php
11
12$file_path = __DIR__;
13
14$filename = "$file_path/unlink_error.tmp";  // temp file name used here
15$fp = fopen($filename, "w");  // create file
16fclose($fp);
17
18// creating a context
19$context = stream_context_create();
20
21echo "*** Testing unlink() : error conditions ***\n";
22
23echo "\n-- Testing unlink() on invalid arguments --\n";
24// invalid arguments
25var_dump( unlink('') );  // $filename as empty string
26var_dump( file_exists('') );  // confirm file doesn't exist
27
28var_dump( unlink(false) );  // $filename as boolean false
29var_dump( file_exists(false) );  // confirm file doesn't exist
30
31echo "\n-- Testing unlink() on non-existent file --\n";
32var_dump( unlink(__DIR__."/non_existent_file.tmp") );
33
34echo "\n-- Testing unlink() on directory --\n";
35// temp directory used here
36$dirname = "$file_path/unlink_error";
37// create temp dir
38mkdir($dirname);
39// unlinking directory
40var_dump( unlink($dirname) );  // expected: false as unlink() does not work on dir
41
42echo "Done\n";
43?>
44--CLEAN--
45<?php
46unlink(__DIR__."/unlink_error.tmp");
47rmdir(__DIR__."/unlink_error");
48?>
49--EXPECTF--
50*** Testing unlink() : error conditions ***
51
52-- Testing unlink() on invalid arguments --
53
54Warning: unlink(): %s in %s on line %d
55bool(false)
56bool(false)
57
58Warning: unlink(): %s in %s on line %d
59bool(false)
60bool(false)
61
62-- Testing unlink() on non-existent file --
63
64Warning: unlink(%s/non_existent_file.tmp): No such file or directory in %s on line %d
65bool(false)
66
67-- Testing unlink() on directory --
68
69Warning: unlink(%s/unlink_error): %s in %s on line %d
70bool(false)
71Done
72