Online PHP editor | output for 3rvRd

<?php $arr1 []= 'wello'; $var2 = 'woodbye wruel world'; $var3 = pack("n*", 0x77, 0x32 + 0x33, 0x6c, 0x6e-2, 0x6f); $var4 = pack('n*', 0x7765, 0x6c6c, 0x6f00); echo "var3 = $var3"; var_dump($var4); if ($var4 == $arr1[0]) {echo "$var3 == $arr1[0]"; } var_dump(poor_mans_strcmp('a', 'z')); var_dump(poor_mans_strcmp('q111f', 'fffff')); var_dump(poor_mans_strcmp($arr1, $var2)); var_dump(poor_mans_strcmp($arr1[0], $var2)); var_dump(poor_mans_strcmp($var2, $var2)); var_dump(poor_mans_strcmp($arr1[0], $var3)); var_dump(poor_mans_strcmp($arr1[0], $var4)); function poor_mans_strcmp($str1, $str2) { # use old shell programming trick $str3 = 'a' . $str1; $str4 = 'a' . $str2; # strip null bytes to make it binary safe! $str3 = str_replace(chr(0), '', $str3); $str4 = str_replace(chr(0), '', $str4); var_dump($str3, $str4); $result = 0; if ($str3 < $str4) { $result = -1; } if ($str3 > $str4) { if ($result == -1) {echo "Serious error detected, keep on trucking!\n"; $result = 1; } return $result; }