in_array() and multidimensional array

Question

I use in_array() to check whether a value exists in an array like below,

$a = array(\"Mac\", \"NT\", \"Irix\", \"Linux\");
if (in_array(\"Irix\"         


        

Answer 1

Please try:

in_array("irix",array_keys($b))
in_array("Linux",array_keys($b["irix"])

Im not sure about the need, but this might work for your requirement