Bug #78124 [Com]: Subclass of an included class not available

Edit report at https://bugs.php.net/bug.php?id=78124&edit=1 ID: 78124 Comment by: sjon@php.net Reported by: aschmidt at anamera dot net Summary: Subclass of an included class not available Status: Open Type: Bug Package: Scripting Engine problem Operating System: Win x64 PHP Version: 7.2.19 Block user comment: N Private report: N New Comment: this behavior seems pretty consistent: https://3v4l.org/GnDr2 Previous Comments: ------------------------------------------------------------------------ [2019-06-07 19:51:22] aschmidt at anamera dot net I had ASSUMED that to be the case. But then I reproduced the problem even after I updated the PHP.INI to comment out all caching includes, and restarting the web server: ;zend_extension=php_opcache.dll [XDebug] ; Must be loaded after OpCache ! ;zend_extension = "C:\Program Files\PHP\v7.2\ext\php_xdebug-2.7.2-7.2-vc15-nts-x86_64.dll" xdebug.coverage_enable=0 [PHP_WINCACHE] ;extension=php_wincache.dll ------------------------------------------------------------------------ [2019-06-07 19:27:00] nikic@php.net You likely have opcache enabled on one version and disabled on the other. Is that the case? ------------------------------------------------------------------------ [2019-06-07 19:02:23] aschmidt at anamera dot net Description: ------------ If a class extends a parent class from an include/require, then the subclass cannot be referenced until AFTER the class definition. However, if a class extends a parent class from the SAME script, then the subclass CAN be referenced anywhere in the code. I can't tell at what point this broke, but this appears to have worked in earlier 7.2 releases. Test script: --------------- <?php declare(strict_types=1); require( 'bug2.php' ); // Error: mySubClass2 does NOT exist! var_dump( class_exists( 'myClass1', FALSE ), class_exists( 'mySubClass1', FALSE ), class_exists( 'myParentClass', FALSE ), class_exists( 'mySubClass2', FALSE ) ); class myClass1 { const myConst = 'C1'; } class mySubClass1 extends myClass1 { const myConst = 'S1'; } class mySubClass2 extends myParentClass { const myConst = 'S2'; } // Correct: Now mySubClass2 DOES exist! var_dump( class_exists( 'myClass1', FALSE ), class_exists( 'mySubClass1', FALSE ), class_exists( 'myParentClass', FALSE ), class_exists( 'mySubClass2', FALSE ) ); Content of file "bug2.php": <?php declare(strict_types=1); class myParentClass { const myConst = 'Parent'; } Expected result: ---------------- subclass_bug.php:7:boolean true subclass_bug.php:7:boolean true subclass_bug.php:7:boolean true subclass_bug.php:7:boolean true Actual result: -------------- subclass_bug.php:7:boolean true subclass_bug.php:7:boolean true subclass_bug.php:7:boolean true subclass_bug.php:7:boolean false ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78124&edit=1