Fast-Sort in CloudSys PHP Hiring Challenge

Given 26 alphabets in an order, sort the string based on the alphabetical order listed.

Input:

2
wcyuogmlrdfphitxjakqvzbnes
jcdokai
miruqopsxthzdcnvkfbglwayje
wgfsyvno

Output:

codijak

osnvfgwy

PHP Implementation:

<?php fscanf(STDIN,"%d",$t); while($t>0){ fscanf(STDIN,"%s",$p); fscanf(STDIN,"%s",$s); for($i=0;$i<strlen($p);$i++) { $flag=0; for($j=0;$j<strlen($s);$j++) { if($p[$i]==$s[$j]) { $flag=1; } } if($flag==0) { $p[$i]=""; //$p=str_replace($p[$i],'',$p); } } //fprintf(STDOUT,"%s\n",$p); echo "".$p; echo"\n"; $t--; } ?>