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run code in 200+ php & hhvm versions
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<?php var_dump(base64_decode('V1RGPw==')); var_dump(base64_decode('V1RGPw')); var_dump(base64_decode('V=1==R===GPw'));
Output for 7.1.0 - 7.2.0
string(4) "WTF?" string(4) "WTF?" string(4) "WTF?"
Output for 4.3.0 - 7.0.20
string(4) "WTF?" string(4) "WTF?" bool(false)