<?php
header('Content-type: application/json');
$jsonData = '{
"fileName":null,
"fileUrl":[  
   "U2FsdGVkX1-uM6l4RxCWpIiXiCglblQ45V61bTVvuRC2H3ru72DjM0I337iegtL0eG7-t_H_CEeMrc3vopGkVA",
   "U2FsdGVkX19AX2GGMh_dy71pYYNjgI5Dp1doC58zYqbZbjz02KWdVn5BXjiLcOqjLcgHgKFiOvLQXbRMTzVMJUATPQGh-zMmWaUtUJ0gveLvKOaX3FkM33ZrblwISSBZeocZHxIVxOR1jFpUf9HmuQ",
   "U2FsdGVkX1_XwHvpVBapqhs4fw-6SlUcF8U7rXFxdWTBWeKU7mxQwi1rh9Hor4wPLhQub_qFIprhH59iM90CGsiomMuRmv6cfFBrDzIUkyIEUf83-uBin8L6SWGoyZrQpB6jdAt_elGnS3lYp-TUGg",
   "U2FsdGVkX1-dlLo5wNZpACpERA7aJz-hzegQZ7VGl_uSn9fle1ykAud-ax2kqVhYsmDMJoYbogX9--WFFhAkXCoulHX2wGeD1_N1uvoZvd6-B-4EBmwguntVKHZo3BExZCz0OmRG65gBBXCcV7M10g",
   "U2FsdGVkX1-11v5vUHoO1Yx7Pbsz1OgR4PkmFMHBcw2YO6gQanKg6NL6jLUVF1AqOK5nmTAazur7SZtjIRatJ3_NVR7Q4ya7rZbkXdEIslJKp6hpkgASbJ1hUAWKoNgjoxUEs2FclnQyiTDHntlCUQ"
],
"categoryId":"1110"
}';
$fileUrl = json_decode($jsonData)->fileUrl; 
foreach ($fileUrl as $id => $url) { 
	echo $id . " - " . $url . "\n\n";
}