String in array

PHP
1 
$merchant_name = array (
	'Elizabeth Arden', 
	'InkPlusToner.com'
);
var_dump(in_array('Elizabeth Arden', $merchant_name));
// true, which is correct

$merchant_name_1 = array (
	'Elizabeth Arden' => 'Computers_and_Software', 
	'InkPlusToner.com' => 'Computers_and_Software'
);
var_dump(in_array('Elizabeth Arden', $merchant_name_1));
// false ...

How can I check for the array $merchant_name_1 if a string is in the array?

Thanks

2

[fphp]array_key_exists[/fphp] :slight_smile: