Bug #62547 [Ver->Csd]: callback of private function in parent class works but static vars are lost

Edit report at https://bugs.php.net/bug.php?id=62547&edit=1 ID: 62547 Updated by: cmb@php.net Reported by: beat at joomlapolis dot com Summary: callback of private function in parent class works but static vars are lost -Status: Verified +Status: Closed Type: Bug Package: Class/Object related Operating System: osX 10.6.8 PHP Version: 5.3.14 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: Fixed as of PHP 7.4.0. Previous Comments: ------------------------------------------------------------------------ [2015-08-28 11:50:50] nikic@php.net Still present: https://3v4l.org/cXfUJ HHVM does this right. ------------------------------------------------------------------------ [2012-07-13 12:01:54] beat at joomlapolis dot com Description: ------------ In the case below where the callback function is private, its static local variable is lost during call of inherited class, t if the callback function is private as below, it still gets called, but the local static variable is null instead of initialized like in PHP 5.2, where it works. Also if you make the callback function "protected" instead of "private", the result is correct, as expected. This is reproducible at least on PHP 5.3.8. Test script: --------------- class ok { public function t() { $this->replacer( '*' ); return preg_replace_callback( '/(t)/', array( $this, 'replacer'), 'this is a simple test' ); } private function replacer( $input ) { static $cache = '-'; if ( ! is_array( $input ) ) { $cache = $input; } else { return $cache . $input[1] . $cache; } } } class buggyphp extends ok {} class buggyphptoo extends ok { public function t() { return parent::t(); } } $buggy = new buggyphp(); echo 'Result buggyphp: ' . $buggy->t(); echo "\n"; $buggy = new buggyphptoo(); echo 'Result buggyphptoo: ' . $buggy->t(); echo "\n"; $a = new ok(); echo 'Result ok: ' . $a->t(); exit(); Expected result: ---------------- Result buggyphp: *t*his is a simple *t*es*t* Result buggyphptoo: *t*his is a simple *t*es*t* Result ok: *t*his is a simple *t*es*t* Actual result: -------------- Result buggyphp: -t-his is a simple -t-es-t- Result buggyphptoo: -t-his is a simple -t-es-t- Result ok: *t*his is a simple *t*es*t* ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62547&edit=1