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 "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 m1Q6E
Output for 5.0.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
red string(5) "white" <pre> array(1) { ["246a"]=> int(99) } object(stdClass)#1 (1) { ["246a"]=> int(99) } 99 100 object(x)#2 (1) { ["val"]=> int(100) } bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
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/I12YT on line 31
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/I12YT on line 31
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/I12YT on line 31
Process exited with code 255.