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)
