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run code in 200+ php & hhvm versions
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<?php $str='{"a":123,"b":123}'; var_dump(json_decode($str,true));
based on baSfD
Output for 5.2.0 - 7.2.0
array(2) { ["a"]=> int(123) ["b"]=> int(123) }
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/B83Kc on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/B83Kc on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_decode() in /in/B83Kc on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_decode() in /in/B83Kc on line 3