1--TEST-- 2XORing strings 3--FILE-- 4<?php 5 6$s = "123"; 7$s1 = "234"; 8var_dump(bin2hex($s ^ $s1)); 9 10$s = "1235"; 11$s1 = "234"; 12var_dump(bin2hex($s ^ $s1)); 13 14$s = "some"; 15$s1 = "test"; 16var_dump(bin2hex($s ^ $s1)); 17 18$s = "some long"; 19$s1 = "test"; 20var_dump(bin2hex($s ^ $s1)); 21 22$s = "some"; 23$s1 = "test long"; 24var_dump(bin2hex($s ^ $s1)); 25 26$s = "some"; 27$s ^= "test long"; 28var_dump(bin2hex($s)); 29 30echo "Done\n"; 31?> 32--EXPECTF-- 33string(6) "030107" 34string(6) "030107" 35string(8) "070a1e11" 36string(8) "070a1e11" 37string(8) "070a1e11" 38string(8) "070a1e11" 39Done 40