Question

iam not sure: is this the fastest way to check an array for an Value beginning with XXX ? And if yes, extract the value after XXX: ?

foreach ($result['tag'] as $value) {

        $pos = strpos($value, 'xxx:');

        if ($pos !== false) {
            $split = explode('xxx:', $value);
            $r = $split[1];
        } else {
            $r = '';
        }
 }

Answer 1

need to check substr vs explode performance !

by replace 2 lines

$split = explode('xxx:', $value);
$r = $split[1];

with

$r = substr($value,4);

i think the second is more elegant