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  • wincache_ucache_get()

    (PECL wincache >= 1.1.0)

    Gets a variable stored in the user cache

    说明

    wincache_ucache_get(mixed $key[,bool &$success]): mixed

    Gets a variable stored in the user cache.

    参数

    $key

    The$keythat was used to store the variable in the cache.$keyis case sensitive.$keycan be an array of keys. In this case the return value will be an array of values of each element in the$keyarray. If an object, or an array containing objects, is returned, then the objects will be unserialized. See __wakeup() for details on unserializing objects.

    $success

    Will be set to TRUE on success and FALSE on failure.

    返回值

    If$keyis a string, the function returns the value of the variable stored with that key. The$successis set to TRUE on success and to FALSE on failure.

    The$keyis an array, the parameter$successis always set to TRUE. The returned array(name => value pairs)will contain only those name => value pairs for which the get operation in user cache was successful. If none of the keys in the key array finds a match in the user cache an empty array will be returned.

    范例

    Example #1 wincache_ucache_get() with$keyas a string

    <?php
    wincache_ucache_add('color', 'blue');
    var_dump(wincache_ucache_get('color', $success));
    var_dump($success);
    ?>
    

    以上例程会输出:

    string(4) "blue"
    bool(true)
    

    Example #2 wincache_ucache_get() with$keyas an array

    <?php
    $array1 = array('green' => '5', 'Blue' => '6', 'yellow' => '7', 'cyan' => '8');
    wincache_ucache_set($array1);
    $array2 = array('green', 'Blue', 'yellow', 'cyan');
    var_dump(wincache_ucache_get($array2, $success));
    var_dump($success);
    ?>
    

    以上例程会输出:

    array(4) { ["green"]=> string(1) "5" 
               ["Blue"]=> string(1) "6" 
               ["yellow"]=> string(1) "7" 
               ["cyan"]=> string(1) "8" } 
    bool(true) 
    

    参见

    As per documentation PHP 5.2 doesn't support serialization of PHP internal classes. This means code below will not work:
    <?php
    $d = new DateTime();
    $d->format(DateTime::W3C);
    wincache_ucache_set( 'q1', $d );
    var_dump( wincache_ucache_get( 'q1' )->format(DATE_ATOM));
    ?>
    The output of above code will be (as of PHP5.2.13):
    [11-Feb-2010 08:35:29] PHP Warning: DateTime::format() [<a href='datetime.format'>datetime.format</a>]: The DateTime object has not been correctly initialized by its constructor in C:\inetpub\wwwroot\phptest\tests\ucache\wincache8.php on line 5
    And last var_dump will return bool(false).