3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo{ function __construct(){ } function __destruct(){ echo "destruct\n"; } } (function(){ $x = new Foo(); $y = new Foo(); $x->y = $x; $x->x = $y; })(); echo "wat";
Output for 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Deprecated: Creation of dynamic property Foo::$y is deprecated in /in/DoZL1 on line 15 Deprecated: Creation of dynamic property Foo::$x is deprecated in /in/DoZL1 on line 16 watdestruct destruct
Output for 7.0.0 - 7.0.33, 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 - 8.1.34
watdestruct destruct
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '(' in /in/DoZL1 on line 17
Process exited with code 255.
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75.69 ms | 1956 KiB | 4 Q