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run code in 300+ PHP versions simultaneously
<?php class Foo { function test() { static $i = 0; var_dump(++$i); } } $foo = new Foo; $foo->test(); eval("class Bar extends Foo {}"); $foo->test(); /** * function_add_ref() makes a clone of static variables for inherited functions, so $i in Bar::test gets initial value 1 */ $bar = new Bar; $bar->test(); $bar->test();
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
int(1) int(2) int(3) int(4)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 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 - 5.6.38, 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
int(1) int(2) int(2) int(3)
preferences:
111.79 ms | 2559 KiB | 4 Q