3v4l.org

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<?php $pass = "adeabecc"; $xor = "12341234"; $spass = str_split($pass); $sxor = str_split($xor); for ($i = 0; $i <= 7; $i++) { echo $spass[$i]^$sxor[$i]; } echo $spass['a']^$sxor[1];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
PVVUSWPW Warning: Undefined array key "a" in /in/65HpL on line 13 2
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
PVVUSWPW Notice: Undefined index: a in /in/65HpL on line 13 2
Output for 7.3.32 - 7.3.33
PVVUSWPW2

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