As of writing this note (PHP 5.3.1) serialization of closure is not allowed.
This means a code like the one below:
<?php
//Closure
$bar3 = function($a) {
return $a * 2;
};
wincache_ucache_set('foo3', $bar3);
var_dump(wincache_ucache_get('foo3'));
echo "<br>";
?>
Will throw exception:
[11-Feb-2010 09:25:33] PHP Fatal error: Uncaught exception 'Exception' with message 'Serialization of 'Closure' is not allowed' in C:\inetpub\wwwroot\phptest\tests\ucache\wincache15.php:6
Stack trace:
#0 C:\inetpub\wwwroot\phptest\tests\ucache\wincache15.php(6): wincache_ucache_set('foo3', Object(Closure))
#1 {main}
thrown in C:\inetpub\wwwroot\phptest\tests\ucache\wincache15.php on line 6
However one catch this exception like:
<?php
//Closure
$bar3 = function($a) {
return $a * 2;
};
try
{
wincache_ucache_set('foo3', $bar3);
}
catch (Exception $e)
{
var_dump($e->getMessage());
}
var_dump(wincache_ucache_get('foo3'));
echo "<br>";
?>
This will generate output as shown beloe:
string(41) "Serialization of 'Closure' is not allowed" NULLwincache_ucache_set
Почист и полокален преглед на PHP референцата, со задржана структура од PHP.net и подобра читливост за примери, секции и белешки.
wincache_ucache_set
Референца за `function.wincache-ucache-set.php` со подобрена типографија и навигација.
wincache_ucache_set
(PECL wincache >= 1.1.0)
wincache_ucache_set — Adds a variable in user cache and overwrites a variable if it already exists in the cache
= NULL
$values, mixed $unused Ги ескејпува специјалните знаци во, int $ttl = 0): boolAdds a variable in user cache. Overwrites a variable if it already exists in the cache. The added or updated variable remains in the user cache unless its time to live expires or it is deleted by using wincache_ucache_delete() or wincache_ucache_clear() functions.
Параметри
key-
Store the variable using this
keyname. If a variable with samekeyis already present the function will overwrite the previous value with the new one.keyе чувствително на големи и мали букви.keycan also take array of name => value pairs where names will be used as keys. This can be used to add multiple values in the cache in one operation, thus avoiding race condition. value-
Value of a variable to store.
Valuesupports all data types except resources, such as file handles. This paramter is ignored if first argument is an array. A general guidance is to passnullasvaluewhile using array askey. Акоvalueis an object, or an array containing objects, then the objects will be serialized. See __sleep() for details on serializing objects. values-
Associative array of keys and values.
ttl-
Time for the variable to live in the cache in seconds. After the value specified in
ttlhas passed the stored variable will be deleted from the cache. This parameter takes a default value of0which means the variable will stay in the cache unless explicitly deleted by using wincache_ucache_delete() or wincache_ucache_clear() functions.
Вратени вредности
Враќа key is string, the function returns true на успех и false при неуспех.
Враќа key is an array, the function returns:
- If all the name => value pairs in the array can be set, function returns an empty array;
-
If all the name => value pairs in the array cannot be set, function returns
false; - If some can be set while others cannot, function returns an array with name=>value pair for which the addition failed in the user cache.
Примери
Пример #1 wincache_ucache_set() with key како стринг
<?php
$bar = 'BAR';
var_dump(wincache_ucache_set('foo', $bar));
var_dump(wincache_ucache_get('foo'));
$bar1 = 'BAR1';
var_dump(wincache_ucache_set('foo', $bar1));
var_dump(wincache_ucache_get('foo'));
?>Пример #1 Пример што покажува затворачка ознака што го опфаќа последниот нов ред
bool(true) string(3) "BAR" bool(true) string(3) "BAR1"
Пример #2 wincache_ucache_set() with key as an array
<?php
$colors_array = array('green' => '5', 'Blue' => '6', 'yellow' => '7', 'cyan' => '8');
var_dump(wincache_ucache_set($colors_array));
var_dump(wincache_ucache_set($colors_array));
var_dump(wincache_ucache_get('Blue'));
?>Пример #1 Пример што покажува затворачка ознака што го опфаќа последниот нов ред
array(0) {}
array(0) {}
string(1) "6"
Види Исто така
- wincache_ucache_add() - Презема информации за користењето на меморијата на кешот на сесијата
- wincache_ucache_get() - Проверува дали променлива постои во корисничкиот кеш
- wincache_ucache_delete() - Го намалува вредноста поврзана со клучот
- wincache_ucache_clear() - Ја споредува променливата со старата вредност и ѝ доделува нова вредност
- wincache_ucache_exists() - Брише променливи од корисничкиот кеш
- wincache_ucache_meminfo() - Презема информации за податоци зачувани во кешот на корисникот
- wincache_ucache_info() - Го зголемува вредноста поврзана со клучот
- __sleep()