Please explain me how this PHP snippet Works.?
function getLatLong($address){

	        if (!is_string($address))die("All Addresses must be passed as a string");
            $_url = sprintf('http://maps.google.com/maps?
            output=js&q=%s',rawurlencode($address));
        	$_result = false;
	        if($_result = file_get_contents($_url)) 
            {

        	   if(strpos($_result,'errortips') > 1 || strpos($_result,'Did you mean:') !== false) return false;
	           preg_match('!center:\s*{lat:\s*(-?\d+\.\d+),lng:\s*(-?\d+\.\d+)}!U', $_result, $_match);
		            $_coords['lat'] = $_match[1];
		            $_coords['long'] = $_match[2];
	         }
	        return $_coords;
    }
Please explain me how this PHP snippet Works.?
===

function getLatLong($address){

	        if (!is_string($address))die("All Addresses must be passed as a string");
            $_url = sprintf('http://maps.google.com/maps?
            output=js&q=%s',rawurlencode($address));
        	$_result = false;
	        if($_result = file_get_contents($_url)) 
            {

        	   if(strpos($_result,'errortips') > 1 || strpos($_result,'Did you mean:') !== false) return false;
	           preg_match('!center:\s*{lat:\s*(-?\d+\.\d+),lng:\s*(-?\d+\.\d+)}!U', $_result, $_match);
		            $_coords['lat'] = $_match[1];
		            $_coords['long'] = $_match[2];
	         }
	        return $_coords;
    }