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<?php spl_autoload_register(function($c) { echo "autoloading $c\n"; eval("class $c { const BAR=42; }"); }); class A { const FOO = B::BAR; } echo "class defined but not yet evaluated\n"; echo A::FOO;
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
class defined but not yet evaluated autoloading B 42

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