Searches the array for a given value and returns the key

Searches the array for a given value and returns the key

array_search - This function searches the array for a given value and returns the key if found

$myarr = array(0=>"apple", 1=>"orange", 2=>"banana", 3=>"orange");
$res = array_search('orange', $myarr);
print_r($res);

will outputs
1