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

you can use preg_grep():

$a= array(
 'one',
 'two',
 'three',
 'four'
);

print_r( preg_grep( "/ONe/i" , $a ) );