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run code in 150+ php & hhvm versions
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<?php var_dump(json_encode(array('foo' => NAN), JSON_PARTIAL_OUTPUT_ON_ERROR));
based on dHiMo
Output for 5.5.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(9) "{"foo":0}"
Output for 5.3.0 - 5.3.13, 5.3.15 - 5.4.45
Notice: Use of undefined constant JSON_PARTIAL_OUTPUT_ON_ERROR - assumed 'JSON_PARTIAL_OUTPUT_ON_ERROR' in /in/4Lked on line 3 Warning: json_encode() expects parameter 2 to be long, string given in /in/4Lked on line 3 NULL
Output for 5.3.14
Warning: json_encode(): double NAN does not conform to the JSON spec, encoded as 0 in /in/4Lked on line 3 string(9) "{"foo":0}"
Output for 5.2.0 - 5.2.17
Notice: Use of undefined constant JSON_PARTIAL_OUTPUT_ON_ERROR - assumed 'JSON_PARTIAL_OUTPUT_ON_ERROR' in /in/4Lked on line 3 Warning: json_encode() expects exactly 1 parameter, 2 given in /in/4Lked on line 3 NULL
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/4Lked on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/4Lked 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/4Lked 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/4Lked on line 3