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APC_EXISTS(3) 1 APC_EXISTS(3) apc_exists - Checks if APC key exists SYNOPSIS
mixed apc_exists (mixed $keys) DESCRIPTION
Checks if one or more APC keys exist. PARAMETERS
o $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(3) 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(3), apc_fetch(3). PHP Documentation Group APC_EXISTS(3)