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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(json_encode(array(), JSON_PRETTY_PRINT));
based on oE6MK
Output for 5.4.28 - 5.4.45, 5.5.12 - 7.1.0
string(2) "[]"
Output for 5.4.0 - 5.4.27, 5.5.0 - 5.5.11
string(4) "[ ]"
Output for 5.3.0 - 5.3.29
Notice: Use of undefined constant JSON_PRETTY_PRINT - assumed 'JSON_PRETTY_PRINT' in /in/KB5e3 on line 3 Warning: json_encode() expects parameter 2 to be long, string given in /in/KB5e3 on line 3 NULL
Output for 5.2.0 - 5.2.17
Notice: Use of undefined constant JSON_PRETTY_PRINT - assumed 'JSON_PRETTY_PRINT' in /in/KB5e3 on line 3 Warning: json_encode() expects exactly 1 parameter, 2 given in /in/KB5e3 on line 3 NULL
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/KB5e3 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/KB5e3 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/KB5e3 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/KB5e3 on line 3