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run code in 300+ PHP versions simultaneously
<?php if(version_compare(PHP_VERSION, '5.3') < 0) { echo 'unsupported version'; return; } $j0 = defined('JSON_PRETTY_PRINT') ? JSON_PRETTY_PRINT : 0; $j1 = $j0 | JSON_FORCE_OBJECT; foreach( array( array() ) as $i) { echo json_encode($foo, JSON_FORCE_OBJECT); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant " JSON_FORCE_OBJECT" in /in/aB4Eg:8 Stack trace: #0 {main} thrown in /in/aB4Eg on line 8
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Warning: Use of undefined constant  JSON_FORCE_OBJECT - assumed ' JSON_FORCE_OBJECT' (this will throw an Error in a future version of PHP) in /in/aB4Eg on line 8 Warning: A non-numeric value encountered in /in/aB4Eg on line 8 Notice: Undefined variable: foo in /in/aB4Eg on line 15 null
Output for 7.3.32 - 7.3.33
Warning: Use of undefined constant  JSON_FORCE_OBJECT - assumed ' JSON_FORCE_OBJECT' (this will throw an Error in a future version of PHP) in /in/aB4Eg on line 8 Warning: A non-numeric value encountered in /in/aB4Eg on line 8 null
Output for 7.1.0 - 7.1.25
Notice: Use of undefined constant  JSON_FORCE_OBJECT - assumed ' JSON_FORCE_OBJECT' in /in/aB4Eg on line 8 Warning: A non-numeric value encountered in /in/aB4Eg on line 8 Notice: Undefined variable: foo in /in/aB4Eg on line 15 null
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33
Notice: Use of undefined constant  JSON_FORCE_OBJECT - assumed ' JSON_FORCE_OBJECT' in /in/aB4Eg on line 8 Notice: Undefined variable: foo in /in/aB4Eg on line 15 null
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
unsupported version

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259.33 ms | 402 KiB | 418 Q