3v4l.org

run code in 300+ PHP versions simultaneously
<?php class weird { var $myvar; function __construct() { $this->myvar = "A"; $this->$myvar = "B"; $this->${'myvar'} = "C"; $this->${'$myvar'} = "D"; echo 'this->myvar: '.$this->myvar."\n"; echo 'this->$myvar: '.$this->$myvar."\n"; echo 'this->${\'myvar\'}: '.$this->${'myvar'}."\n"; echo 'this->${\'$myvar\'}: '.$this->${'$myvar'}."\n"; echo 'this->$$$$$$$myvar: '.$this->$$$$$$$myvar."\n"; echo 'this->$$$$$$${\'$$$myvar\'}: ' . $this->$$$$$$${'$$$myvar'}."\n"; } } ?>
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
preferences:
169.84 ms | 402 KiB | 181 Q