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run code in 300+ PHP versions simultaneously
<?php class Foo { const A = 'Foo::A'; const B = self::A . ' and ' . self::C; const C = 'Foo::C'; } class Bar extends Foo { const A = 'Bar::A'; const C = 'Bar::C'; } var_dump(Bar::B);
Output for git.master, git.master_jit, rfc.property-hooks
string(17) "Foo::A and Foo::C"

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