Bug #79896 [Asn->Csd]: slower processing of non-fatal errors using custom error handler (7.4.7+)

Edit report at https://bugs.php.net/bug.php?id=79896&edit=1 ID: 79896 Updated by: cmb@php.net Reported by: tony dot jin at sbumed dot org Summary: slower processing of non-fatal errors using custom error handler (7.4.7+) -Status: Assigned +Status: Closed Type: Bug Package: Performance problem Operating System: Windows Server 2016 PHP Version: 7.4.8 Assigned To: cmb Block user comment: N Private report: N New Comment: Fine! :) Previous Comments: ------------------------------------------------------------------------ [2020-07-31 06:07:13] tony dot jin at sbumed dot org The performance issue seems to be resolved on 7.4.9 RC1. Thank you for the great news and fast turnaround! ------------------------------------------------------------------------ [2020-07-25 12:05:41] cmb@php.net I think that has been fixed in the meantime[1]. Could you please try with PHP 7.4.9RC1[2]? [1] <http://git.php.net/?p=php-src.git;a=commit;h=5795dfda93d1f60cce4731e2089ad5975a6c062f> [2] <https://windows.php.net/qa#php-7.4> ------------------------------------------------------------------------ [2020-07-25 06:17:44] tony dot jin at sbumed dot org Description: ------------ seeing 10-100x slower processing of non-fatal errors using custom error handler function on 7.4.7-7.4.8 vs. 7.4.0-7.4.6. https://3v4l.org/WcFJK/perf#output not a c programmer, but i wonder if it could be caused by the following 7.4.6 bug fix: https://bugs.php.net/bug.php?id=79599 Test script: --------------- <?php // see https://3v4l.org/WcFJK/perf#output // 2020.07.25 // performance hit processing non-fatal errors w/ custom error handler (e_notice, e_warning) // affects versions 7.4.7 & 7.4.8 // array of seq. ints $start = 3; $number_of_values = 5000; $seq_array = range($start, $start+$number_of_values-1); // set error handler function error_handler_fn($errno, $errstr, $errfile, $errline) { $dummy = '0'; // print_r(implode(", ", Array($errno, $errstr, $errfile, $errline))."\n"); } set_error_handler("error_handler_fn"); // array to index $array = Array(1,2,3); // run loop $t1 = microtime(true); foreach ($seq_array as $val) { $nothing = $array[$val]; // E_NOTICE (8) - try to index array at undefined index (performance issue) // $nothing2 = count(); // E_WARNING (2) - try to count nothing (similar performance issue) } $t2 = microtime(true); $outmsg = "\n\nRun time: " . round(($t2-$t1)*1000.,2) . " milliseconds (" . phpversion() . ")"; print_r($outmsg); ?> Expected result: ---------------- execution time comparable to 7.4.6 and earlier Actual result: -------------- execution time 10-100x longer on 7.4.7-7.4.8 than on 7.4.6 and earlier ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79896&edit=1