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run code in 300+ PHP versions simultaneously
<?php function foo(){ return "Foo \n"; } $foo = 'foo'; var_dump($foo); // string(3) "foo" echo $foo(); // NULL. Why?
based on sTfkQ
Output for 7.1.25 - 7.1.28, 7.2.0 - 7.2.33, 7.3.0 - 7.3.26, 7.4.0 - 7.4.14, 8.0.0 - 8.0.3
string(3) "foo" Foo