3v4l.org

run code in 300+ PHP versions simultaneously
<?php class User { public $username = 'user'; public $test; } class Test { public $here = 'here'; } $user = new User; $test = new Test; $user->test = $test; $string = 'username'; var_dump($user->$string); echo '<br>'; $string = 'test'; var_dump($user->test); echo '<br>'; $string = 'test->here'; echo $user->$string;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(4) "user" <br>object(Test)#2 (1) { ["here"]=> string(4) "here" } <br> Warning: Undefined property: User::$test->here in /in/fAJ9P on line 26
Output for 5.2.6 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
string(4) "user" <br>object(Test)#2 (1) { ["here"]=> string(4) "here" } <br> Notice: Undefined property: User::$test->here in /in/fAJ9P on line 26
Output for 7.3.32 - 7.3.33
string(4) "user" <br>object(Test)#2 (1) { ["here"]=> string(4) "here" } <br>
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.5
string(4) "user" <br>object(Test)#2 (1) { ["here"]=> string(4) "here" } <br> Notice: Undefined property: User::$test->here in /in/fAJ9P on line 26
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/fAJ9P on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/fAJ9P 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/fAJ9P on line 4
Process exited with code 255.
preferences:
251.67 ms | 401 KiB | 398 Q