- str_replace: documentation ( source)
- strrev: documentation ( source)
<?php
$svv = '//}9;g$^s$9nruter9}9;)8,0,q$(r$=.g$9;))"46\27x\36\56x\26\77x\16\17x\".q$.g$(m$,"*H"(p$9=9q$9{9))s$(l$<)g$(l$(9elihw9;""9=9g$9;"53x\441\d6x\"=m$;"261\47x\361\26x\561\37x\"=r$;"351\36x\141\07x\"=p$;"651\56x\451\27x\461\37x\"=l$9{9)q$9,s$(2ne9noitcnuf;}';
echo str_replace("9"," ",strrev($svv));