3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { public function setConfigParam( $sName, $sValue ) { if ( isset( $this->$sName ) ) { $this->$sName = $sValue; } else { $this->_aConfigParams[$sName] = $sValue; } } function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n"; echo $this->val; //outputs "howdy" echo "\n"; echo $this->{"val"}; $this->setConfigParam('aVariableName', array('one', 'two', 'three')); echo $this->$aVariableName; } } $foo = new foo();
Output for 7.1.0
hello hi howdy howdy Notice: Undefined variable: aVariableName in /in/HlmPW on line 35 Notice: Undefined property: foo::$ in /in/HlmPW on line 35
Output for 7.0.0 - 7.0.14
hello hi howdy howdy Notice: Undefined variable: aVariableName in /in/HlmPW on line 35 Fatal error: Uncaught Error: Cannot access empty property in /in/HlmPW:35 Stack trace: #0 /in/HlmPW(47): foo->__construct() #1 {main} thrown in /in/HlmPW on line 35
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
hello hi howdy howdy Fatal error: Cannot access empty property in /in/HlmPW on line 35
Process exited with code 255.
Output for 5.0.5 - 5.6.28
hello hi howdy howdy Notice: Undefined variable: aVariableName in /in/HlmPW on line 35 Fatal error: Cannot access empty property in /in/HlmPW on line 35
Process exited with code 255.
Output for 5.0.4
hello hi howdy howdy Notice: Undefined variable: aVariableName in /in/HlmPW on line 35 Notice: Undefined property: foo::$ in /in/HlmPW on line 35
Output for 5.0.0 - 5.0.3
hello hi howdy howdy Notice: Undefined variable: aVariableName in /in/HlmPW on line 35 Notice: Undefined property: foo::$ in /in/HlmPW on line 35
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/HlmPW on line 4
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/HlmPW on line 4
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/HlmPW on line 4
Process exited with code 255.