array_key_exists()

Function to check whether a given array key exists in the array. This function is taken from php.js.

Usage

var key = "myKey";
if(array_key_exists(key, array)) {
   //Do something if the key exists in the array.
}

Parameter	Data type	Required	Description
key	string / number	Yes	The key to search for
search	array	Yes	The array to search

Value	Meaning
true	The key exists in the given array
false	The key does not exist in the given array