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run code in 200+ php & hhvm versions
Bugs & Features
<?php class Test { public $foo=1; public $bar=2; public $foobar="3"; } $p1="foo"; $p2="bar"; $test=new Test(); echo $test->$p1.$p2;
Output for 5.0.0 - 5.6.30, hhvm-3.10.1 - 3.11.1, hhvm-3.13.2 - 3.17.3, 7.0.0 - 7.2.0
1bar
Output for hhvm-3.12.14

Process exited with code 137.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/GaHBn on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/GaHBn on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/GaHBn on line 3
Process exited with code 255.