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run code in 200+ php & hhvm versions
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<?php $arr = ['foo' =>[]]; $arr['foo'][] = ['bar' =>0] var_dump($arr);
based on 8kJds
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.1.7
Parse error: syntax error, unexpected 'var_dump' (T_STRING) in /in/QCCA6 on line 4
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_STRING in /in/QCCA6:4 Stack trace: #0 {main}
Process exited with code 255.