ScotlandPHP

apcu_exists

(PECL apcu >= 4.0.0)

apcu_existsChecks if entry exists

Description

mixed apcu_exists ( mixed $keys )

Checks if one or more APCu entries 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 apcu_exists() example

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

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

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

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

echo 
PHP_EOL;

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

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