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.
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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25
use CLDRPluralRuleParser\Evaluator;
26
use CLDRPluralRuleParser\Error as CLDRPluralRuleError;
27
use MediaWiki\MediaWikiServices;
28
29
/**
30
* Class for caching the contents of localisation files, Messages*.php
31
* and *.i18n.php.
32
*
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* An instance of this class is available using Language::getLocalisationCache().
34
*
35
* The values retrieved from here are merged, containing items from extension
36
* files, core messages files and the language fallback sequence (e.g. zh-cn ->
37
* zh-hans -> en ). Some common errors are corrected, for example namespace
38
* names with spaces instead of underscores, but heavyweight processing, such
39
* as grammatical transformation, is done by the caller.
40
*/
41
class LocalisationCache {
42
const VERSION = 4;
43
44
/** Configuration associative array */
45
private $conf;
46
47
/**
48
* True if recaching should only be done on an explicit call to recache().
49
* Setting this reduces the overhead of cache freshness checking, which
50
* requires doing a stat() for every extension i18n file.
51
*/
52
private $manualRecache = false;
53
54
/**
55
* True to treat all files as expired until they are regenerated by this object.
56
*/
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private $forceRecache = false;
58
59
/**
60
* The cache data. 3-d array, where the first key is the language code,
61
* the second key is the item key e.g. 'messages', and the third key is
62
* an item specific subkey index. Some items are not arrays and so for those
63
* items, there are no subkeys.
64
*/
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protected $data = [];
66
67
/**
68
* The persistent store object. An instance of LCStore.
69
*
70
* @var LCStore
71
*/
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private $store;
73
74
/**
75
* A 2-d associative array, code/key, where presence indicates that the item
76
* is loaded. Value arbitrary.
77
*
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* For split items, if set, this indicates that all of the subitems have been
79
* loaded.
80
*/
81
private $loadedItems = [];
82
83
/**
84
* A 3-d associative array, code/key/subkey, where presence indicates that
85
* the subitem is loaded. Only used for the split items, i.e. messages.
86
*/
87
private $loadedSubitems = [];
88
89
/**
90
* An array where presence of a key indicates that that language has been
91
* initialised. Initialisation includes checking for cache expiry and doing
92
* any necessary updates.
93
*/
94
private $initialisedLangs = [];
95
96
/**
97
* An array mapping non-existent pseudo-languages to fallback languages. This
98
* is filled by initShallowFallback() when data is requested from a language
99
* that lacks a Messages*.php file.
100
*/
101
private $shallowFallbacks = [];
102
103
/**
104
* An array where the keys are codes that have been recached by this instance.
wikimedia /
mediawiki
Kunal Mehta
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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: