1--TEST--
2Testing unlink() function : error conditions
3--SKIPIF--
4<?php
5if (substr(PHP_OS, 0, 3) != 'WIN') {
6    die('skip.. only on Windows');
7}
8?>
9--FILE--
10<?php
11/* Prototype : bool unlink ( string $filename [, resource $context] );
12   Description : Deletes filename
13*/
14
15$file_path = __DIR__;
16
17$filename = "$file_path/unlink_error.tmp";  // temp file name used here
18$fp = fopen($filename, "w");  // create file
19fclose($fp);
20
21// creating a context
22$context = stream_context_create();
23
24echo "*** Testing unlink() : error conditions ***\n";
25
26echo "-- Testing unlink() on unexpected no. of arguments --\n";
27// arg < expected
28var_dump( unlink() );
29// args > expected
30var_dump( unlink($filename, $context, true) );
31var_dump( file_exists($filename) ); // expected: true
32
33echo "\n-- Testing unlink() on invalid arguments --\n";
34// invalid arguments
35var_dump( unlink('') );  // $filename as empty string
36var_dump( file_exists('') );  // confirm file doesnt exist
37
38var_dump( unlink(NULL) );  // $filename as NULL
39var_dump( file_exists(NULL) );  // confirm file doesnt exist
40
41var_dump( unlink(false) );  // $filename as boolean false
42var_dump( file_exists(false) );  // confirm file doesnt exist
43
44var_dump( unlink($filename, '') );  // $context as empty string
45var_dump( unlink($filename, false) );  // $context as boolean false
46
47
48echo "\n-- Testing unlink() on non-existent file --\n";
49var_dump( unlink(__DIR__."/non_existent_file.tmp") );
50
51echo "\n-- Testing unlink() on directory --\n";
52// temp directory used here
53$dirname = "$file_path/unlink_error";
54// create temp dir
55mkdir($dirname);
56// unlinking directory
57var_dump( unlink($dirname) );  // expected: false as unlink() does not work on dir
58
59echo "Done\n";
60?>
61--CLEAN--
62<?php
63unlink(__DIR__."/unlink_error.tmp");
64rmdir(__DIR__."/unlink_error");
65?>
66--EXPECTF--
67*** Testing unlink() : error conditions ***
68-- Testing unlink() on unexpected no. of arguments --
69
70Warning: unlink() expects at least 1 parameter, 0 given in %s on line %d
71bool(false)
72
73Warning: unlink() expects at most 2 parameters, 3 given in %s on line %d
74bool(false)
75bool(true)
76
77-- Testing unlink() on invalid arguments --
78
79Warning: unlink(): %s in %s on line %d
80bool(false)
81bool(false)
82
83Warning: unlink(): %s in %s on line %d
84bool(false)
85bool(false)
86
87Warning: unlink(): %s in %s on line %d
88bool(false)
89bool(false)
90
91Warning: unlink() expects parameter 2 to be resource, string given in %s on line %d
92bool(false)
93
94Warning: unlink() expects parameter 2 to be resource, bool given in %s on line %d
95bool(false)
96
97-- Testing unlink() on non-existent file --
98
99Warning: unlink(%s/non_existent_file.tmp): No such file or directory in %s on line %d
100bool(false)
101
102-- Testing unlink() on directory --
103
104Warning: unlink(%s/unlink_error): Is a directory in %s on line %d
105bool(false)
106Done
107