and let’s assume the following content of Bar.php:
// Bar.phpnamespaceOtherDir;useSomeDir\Foo;// This now conflicts the class OtherDir\Foo
If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the
same runtime, you will see a PHP error such as the following:
PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as OtherDir/Foo.php does not necessarily have to be loaded and the
error is only triggered if it is loaded before OtherDir/Bar.php, this problem
might go unnoticed for a while. In order to prevent this error from surfacing,
you must import the namespace with a different alias:
// Bar.phpnamespaceOtherDir;useSomeDir\FooasSomeDirFoo;// There is no conflict anymore.
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5
use function header_remove;
6
use function headers_list;
7
use function headers_sent;
8
use function http_response_code;
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10
/**
11
* children class to add and remove the header
12
*
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* @since 3.3.0
14
*
15
* @package Redaxscript
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* @category Header
17
* @author Henry Ruhs
18
*/
19
20
class Header
21
{
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/**
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* init the class
24
*
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* @since 3.3.0
26
*/
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2
public static function init() : void
29
{
30
2
self::add(
31
[
32
2
'X-Content-Type-Options: nosniff',
33
'X-Frame-Options: sameorigin',
34
'X-XSS-Protection: 1; mode=block'
35
]);
36
2
self::remove('X-Powered-By');
37
2
}
38
39
/**
40
* get the header array
41
*
42
* @since 3.3.0
43
*
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* @return array
45
*/
46
47
1
public static function getArray() : array
48
{
49
1
return headers_list();
50
}
51
52
/**
53
* add the header
54
*
55
* @since 3.3.0
56
*
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* @param string|array $header
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* @param bool $replace
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*
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* @return bool
61
*/
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63
6
public static function add($header = null, bool $replace = true) : bool
64
{
65
6
if (!self::isSent())
66
{
67
5
foreach ((array)$header as $value)
68
{
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5
header($value, $replace);
70
}
71
5
return true;
72
}
73
1
return false;
74
75
}
76
77
/**
78
* remove the header
79
*
80
* @since 3.3.0
81
*
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* @param string|array $header
83
*
84
* @return bool
85
*/
86
87
3
public static function remove($header = null) : bool
88
{
89
3
if (!self::isSent())
90
{
91
2
foreach ((array)$header as $value)
92
{
93
2
header_remove($value);
94
}
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2
return true;
96
}
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1
return false;
98
}
99
100
/**
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* is header sent
102
*
103
* @since 3.3.0
104
*
105
* @return bool
106
*/
107
108
8
public static function isSent() : bool
109
{
110
8
return headers_sent();
111
}
112
113
/**
114
* response code
115
*
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* @since 4.0.0
117
*
118
* @param int $code
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*
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* @return int
121
*/
122
123
1
public static function responseCode(int $code = null) : int
124
{
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1
return http_response_code($code);
126
}
127
128
/**
129
* redirect to location
130
*
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* @since 3.3.0
132
*
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* @param string $location
134
*
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* @return bool
136
*/
137
138
1
public static function doRedirect(string $location = null) : bool
139
{
140
1
return self::add('Location: ' . $location);
141
}
142
143
/**
144
* content type
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*
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* @since 3.3.0
147
*
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* @param string $type
149
*
150
* @return bool
151
*/
152
153
1
public static function contentType(string $type = null) : bool
redaxscript /
redaxscript
redaxmedia
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: