array_filter question

[silverglade]

Hi, I have a question about the "array_filter" function for php arrays. Here is the sample code. I have commented my question next to the code.  The code filters out code that does not begin with y.  An array with just the names that end with Y are returned. Any help greatly appreciated. Thank you.

 

function endswithy($value)
         {
          return (substr($value, -1) == 'y'); // What does "substr($value,-1) == 'y');" do here 

         }

$people = array("Johnny","Timmy","Bobby"."Sam");
$withy = array_filter($people, "endswithy");

[requinix]

The code filters out code that does not begin with y.

The function is called "endswithy" for a very specific reason

 

Here's the manual page for substr(). Read over that.

[silverglade]

Awesome thank you requinix, in the future I will try to find it in the manual. Thank you for that link. I understand it all now. :)