PHP case-insensitive in_array function

Question

Is it possible to do case-insensitive comparison when using the in_array function?

So with a source array like this:

$a= array(
 \'one\'         


        

Answer 1

Say you want to use the in_array, here is how you can make the search case insensitive.

Case insensitive in_array():

foreach($searchKey as $key => $subkey) {

     if (in_array(strtolower($subkey), array_map("strtolower", $subarray)))
     {
        echo "found";
     }

}

Normal case sensitive:

foreach($searchKey as $key => $subkey) {

if (in_array("$subkey", $subarray))

     {
        echo "found";
     }

}