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<?php class Autoloader1 { public static function autoload ($class) { var_dump("Loading {$class} from " . __CLASS__); spl_autoload_register(["Autoloader2", "autoload"]); } } class Autoloader2 { public static function autoload ($class) { var_dump("Loading {$class} from " . __CLASS__);exit; } } spl_autoload_register(["Autoloader1", "autoload"]); $r = new Foo();
Output for 5.6.0 - 5.6.30, 7.0.3 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
string(28) "Loading Foo from Autoloader1" string(28) "Loading Foo from Autoloader2"
Output for 7.0.0 - 7.0.2
string(28) "Loading Foo from Autoloader1" Fatal error: Uncaught Error: Class 'Foo' not found in /in/7gp1b:21 Stack trace: #0 {main} thrown in /in/7gp1b on line 21
Process exited with code 255.

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