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run code in 300+ PHP versions simultaneously
<?php class A { public ?int $foo; } $a = new A; var_dump(json_encode($a)); var_dump(serialize($a)); var_dump((array) $a); $a->foo = 42; var_dump(json_encode($a)); var_dump(serialize($a)); var_dump((array) $a); $a->foo = null; var_dump(json_encode($a)); var_dump(serialize($a)); var_dump((array) $a);
Output for 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 - 8.3.7
string(2) "{}" string(12) "O:1:"A":0:{}" array(0) { } string(10) "{"foo":42}" string(27) "O:1:"A":1:{s:3:"foo";i:42;}" array(1) { ["foo"]=> int(42) } string(12) "{"foo":null}" string(24) "O:1:"A":1:{s:3:"foo";N;}" array(1) { ["foo"]=> NULL }
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 string(2) "{}" string(12) "O:1:"A":0:{}" array(0) { } string(10) "{"foo":42}" string(27) "O:1:"A":1:{s:3:"foo";i:42;}" array(1) { ["foo"]=> int(42) } string(12) "{"foo":null}" string(24) "O:1:"A":1:{s:3:"foo";N;}" array(1) { ["foo"]=> NULL }
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '?', expecting function (T_FUNCTION) or const (T_CONST) in /in/hkHp7 on line 5
Process exited with code 255.
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