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@ 2013-10-06T21:31:45Z

<?php
$a = '1-1,2-2';
if (!preg_match('/\d\-\,/', $a)) {
    die('Invalid Request');
}
echo 'ok';

Output
Performance
VLD
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preg_match: documentation ( source)

preferences:dark modelive preview

33.02 ms | 402 KiB | 5 Q