3v4l.org

run code in 300+ PHP versions simultaneously
<?php final class Constants { public function __get($constName) { // Null for non-defined "constants" $val = null; switch($constName){ case 'FOO': $val = 'MY CONSTANT UNCHANGEABLE VALUE'; break; case 'BAR': $val = 'MY OTHER CONSTANT VALUE'; break; } return $val; } public function __set($key, $value) { throw new Exception('A runtime modification of constant values is not allowed.'); } } $c = new Constants; echo $c->FOO; $c->FOO = 'Hello World';
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
MY CONSTANT UNCHANGEABLE VALUE Fatal error: Uncaught Exception: A runtime modification of constant values is not allowed. in /in/UgEEm:23 Stack trace: #0 /in/UgEEm(29): Constants->__set('FOO', 'Hello World') #1 {main} thrown in /in/UgEEm on line 23
Process exited with code 255.
Output for 5.0.5, 5.1.3 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30
MY CONSTANT UNCHANGEABLE VALUE Fatal error: Uncaught exception 'Exception' with message 'A runtime modification of constant values is not allowed.' in /in/UgEEm:23 Stack trace: #0 /in/UgEEm(29): Constants->__set('FOO', 'Hello World') #1 {main} thrown in /in/UgEEm on line 23
Process exited with code 255.
Output for 5.1.0 - 5.1.2
MY CONSTANT UNCHANGEABLE VALUE Fatal error: Uncaught exception 'Exception' with message 'A runtime modification of constant values is not allowed.' in /in/UgEEm:23 Stack trace: #0 /in/UgEEm(29): Constants::__set('FOO', 'Hello World') #1 {main} thrown in /in/UgEEm on line 23
Process exited with code 255.
Output for 5.0.3 - 5.0.4
MY CONSTANT UNCHANGEABLE VALUE Fatal error: Uncaught exception 'Exception' with message 'A runtime modification of constant values is not allowed.' in /in/UgEEm:23 Stack trace: #0 /in/UgEEm(23): Constants::__set() #1 /in/UgEEm(29): Constants->__set() #2 /in/UgEEm(29): unknown() #3 {main} thrown in /in/UgEEm on line 23
Process exited with code 255.
Output for 5.0.0 - 5.0.2
MY CONSTANT UNCHANGEABLE VALUE Fatal error: Uncaught exception 'Exception' with message 'A runtime modification of constant values is not allowed.' in /in/UgEEm:23 Stack trace: #0 /in/UgEEm(29): Constants->__set() #1 /in/UgEEm(29): unknown() #2 {main} thrown in /in/UgEEm on line 23
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/UgEEm on line 3
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_CLASS in /in/UgEEm on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/UgEEm on line 3
Process exited with code 255.
preferences:
176.14 ms | 416 KiB | 5 Q