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[edit] Last updated: Fri, 23 Mar 2012

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apc_exists

(PECL apc >= 3.1.4)

apc_existsChecks if APC key exists

Açıklama

mixed apc_exists ( mixed $keys )

Checks if one ore more APC keys exist.

Değiştirgeler

keys

A string, or an array of strings, that contain keys.

Dönen Değerler

Returns TRUE if the key exists, otherwise FALSE Or if an array was passed to keys, then an array is returned that contains all existing keys, or an empty array if none exist.

Örnekler

Örnek 1 apc_exists() example

<?php
$fruit  
'apple';
$veggie 'carrot';

apc_store('foo'$fruit);
apc_store('bar'$veggie);

if (
apc_exists('foo')) {
    echo 
"Foo exists: ";
    echo 
apc_fetch('foo');
} else {
    echo 
"Foo does not exist";
}

echo 
PHP_EOL;
if (
apc_exists('baz')) {
    echo 
"Baz exists.";
} else {
    echo 
"Baz does not exist";
}

echo 
PHP_EOL;

$ret apc_exists(array('foo''donotexist''bar'));
var_dump($ret);

?>

Yukarıdaki örnek şuna benzer bir çıktı üretir:

Foo exists: apple
Baz does not exist
array(2) {
  ["foo"]=>
  bool(true)
  ["bar"]=>
  bool(true)
}

Ayrıca Bakınız

  • apc_cache_info() - APC'nin veri deposundan önbellek bilgisini gösterir
  • apc_fetch() - Depolanmış bir değişkeni önbellekten alır


add a note add a note User Contributed Notes apc_exists
FiFFiO 24-May-2012 08:13
apc_exists declaration if your PECL apc version is less than 3.1.4:

<?php
if(!function_exists('apc_exists'))
    {
    function
apc_exists($keys)
        {
       
$result;
       
apc_fetch($keys, $result);
        return
$result;
        }
    }
?>

 
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