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<?php declare(strict_types=1); var_dump( class_exists( 'MySubclass1' ), class_exists( 'MySubclass2' ), class_exists( 'MyAbstract' ) ); // PHP 7.4.9 = FALSE, true, true (PHP 7.3.21 = TRUE, true, true) class MySubclass1 extends MyAbstract{} abstract class MyAbstract{} class MySubclass2 extends MyAbstract{} var_dump( class_exists( 'MySubclass1' ), class_exists( 'MySubclass2' ), class_exists( 'MyAbstract' ) ); // true, true, true
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) bool(true) bool(true) bool(true) bool(true) bool(true)

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