3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $rose = "black"; ${"rose"} = "white"; $rose = "red"; print_r(${"rose"}); echo "\n\n"; /** Parse error: syntax error, unexpected '123' (T_LNUMBER), expecting variable (T_VARIABLE) or '{' or '$' $123 = 456; var_dump($123); **/ ${"123"} = "white"; var_dump(${"123"}); echo '<pre>'; //var_dump(get_defined_vars()); if( in_array($("123"),get_defined_vars())){ echo "\${"123"} in array"; } echo "\n\n"; $arr{"246a"} = 99; var_dump($arr); $o = (object) $arr; var_dump($o); echo $o->{"246a"},"\n\n"; class x extends stdClass { public $val; function Show($n){ $this->val = $n; return $this->val; } } $s = new x(); echo $s->Show(100),"\n"; var_dump($s); var_dump($s instanceof stdClass);
based on nXe7J
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.4.34
Parse error: syntax error, unexpected '(', expecting variable (T_VARIABLE) or '$' in /in/621Rf on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '(', expecting T_VARIABLE or '$' in /in/621Rf on line 18
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 '(', expecting T_VARIABLE or '$' in /in/621Rf on line 18
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/621Rf on line 18
Process exited with code 255.