3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr =[['name'=>'luo'],['age'=>22]]; echo json_encode($arr); echo json_encode($arr,true); ?> <script> var test = [<?php echo json_encode($arr,true);?>]; alert(test); </script>
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
[{"name":"luo"},{"age":22}][{"name":"luo"},{"age":22}]<script> var test = [[{"name":"luo"},{"age":22}]]; alert(test); </script>
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/tjG6Q on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/tjG6Q on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tjG6Q on line 4
Process exited with code 255.