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<?php spl_autoload_register(function($class) { throw new Exception("Could not load $class"); }); spl_autoload_register(function($class) { if ($class == "Widget") { eval('class Widget { }'); } }); spl_autoload_register(function($class) { throw new Exception("Still could not load $class"); }); try { new Foo(); } catch (Exception $e) { for ($i = 1; $e; $e = $e->getPrevious()) printf("#%d Foo: %s\n", $i++, $e->getMessage()); } finally { var_dump(class_exists("Foo", false)); } try { new Widget(); } catch (Exception $e) { for ($i = 1; $e; $e = $e->getPrevious()) printf("#%d Foo: %s\n", $i++, $e->getMessage()); } finally { var_dump(class_exists("Widget", false)); }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
#1 Foo: Could not load Foo bool(false) #1 Foo: Could not load Widget bool(false)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33
#1 Foo: Still could not load Foo #2 Foo: Could not load Foo bool(false) #1 Foo: Could not load Widget bool(true)

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