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(NULL) );  // $filename as NULL
29var_dump( file_exists(NULL) );  // confirm file doesn't exist
30
31var_dump( unlink(false) );  // $filename as boolean false
32var_dump( file_exists(false) );  // confirm file doesn't exist
33
34echo "\n-- Testing unlink() on non-existent file --\n";
35var_dump( unlink(__DIR__."/non_existent_file.tmp") );
36
37echo "\n-- Testing unlink() on directory --\n";
38// temp directory used here
39$dirname = "$file_path/unlink_error";
40// create temp dir
41mkdir($dirname);
42// unlinking directory
43var_dump( unlink($dirname) );  // expected: false as unlink() does not work on dir
44
45echo "Done\n";
46?>
47--CLEAN--
48<?php
49unlink(__DIR__."/unlink_error.tmp");
50rmdir(__DIR__."/unlink_error");
51?>
52--EXPECTF--
53*** Testing unlink() : error conditions ***
54
55-- Testing unlink() on invalid arguments --
56
57Warning: unlink(): %s in %s on line %d
58bool(false)
59bool(false)
60
61Warning: unlink(): %s in %s on line %d
62bool(false)
63bool(false)
64
65Warning: unlink(): %s in %s on line %d
66bool(false)
67bool(false)
68
69-- Testing unlink() on non-existent file --
70
71Warning: unlink(%s/non_existent_file.tmp): No such file or directory in %s on line %d
72bool(false)
73
74-- Testing unlink() on directory --
75
76Warning: unlink(%s/unlink_error): %s in %s on line %d
77bool(false)
78Done
79