php - $_GET['_escaped_fragment_'] not returning anything -


i'm following tutorial on html snapshot how return snapshot , first thing i'm testing if $_get['_escaped_fragment_'] returns , doesn't, code have this:

<?    $escaped_fragment = $_get['_escaped_fragment_'];    if(isset($escaped_fragment)){ ?>     <script>     $(document).ready(function(){       console.log("helloo")     })     </script> <? } ?>

normally helloo in console, don't. doing wrong?

edit: i'm opening url domain.com/?_escaped_fragment_


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