PHP 5.5.15 is released

apc_exists

(PECL apc >= 3.1.4)

apc_existsChecks if APC key exists

Description

mixed apc_exists ( mixed $keys )

Checks if one ore more APC keys exist.

Parameters

keys

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

Return Values

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.

Examples

Example #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);

?>

The above example will output something similar to:

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

See Also

  • apc_cache_info() - اطلاعات ذخیره شده در کاشه را از ذخیره داده APC بازیابی می‌نماید.
  • apc_fetch() - بازیابی یک متغیر ذخیره شده از کشاه
add a note add a note

User Contributed Notes 1 note

up
0
FiFFiO
2 years ago
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;
        }
    }
?>
To Top