3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(json_encode('Hello')); var_dump(json_decode('Hello')); // wrong var_dump(json_decode("Hello")); // wrong var_dump(json_decode('"Hello"')); // correct var_dump(json_decode("'Hello'")); // wrong
Output for 5.2.9 - 7.2.0
string(7) ""Hello"" NULL NULL string(5) "Hello" NULL
Output for 5.2.1 - 5.2.8
string(7) ""Hello"" string(5) "Hello" string(5) "Hello" string(5) "Hello" string(7) "'Hello'"
Output for 5.2.0
string(7) ""Hello"" NULL NULL NULL NULL
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/lcB6Z on line 3
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/lcB6Z on line 8
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/lcB6Z on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/lcB6Z on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/lcB6Z on line 3