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run code in 150+ php & hhvm versions
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<?php $t = json_decode('{ "data":[ {"roleId":"qai41","role":"qai43","level":"45","sex":"0"}, {"roleId":"qai41","role":"qai41","level":"78","sex":"0"}, {"roleId":"qai41","role":"qai42","level":"44","sex":"0"} ] }', true); function levelSort($a, $b) { if($a['level'] == $b['level']) return 0; return ($a['level']<$b['level']) ? 1 : -1; } usort($t['data'], 'levelSort'); print_r($t['data'][0]['roleId']);
based on rpl1c
Output for 5.2.0 - 7.1.0
qai41
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/NoUbH on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/NoUbH on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_decode() in /in/NoUbH on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_decode() in /in/NoUbH on line 2