[php-src] Issue #11507: Performance regression in PHP 8.3

Issue: https://github.com/php/php-src/issues/11507 Author: andypost ### Description The following code: ```php <?php $post_max_size = 8 * 1024 * 1024; function generateFile($filename, $width, $lines, $type = 'binary-text') { $text = ''; $t0 = microtime(TRUE); for ($i = 0; $i < $lines; $i++) { // Generate $width - 1 characters to leave space for the "\n" character. for ($j = 0; $j < $width - 1; $j++) { switch ($type) { case 'text': $text .= chr(rand(32, 126)); break; case 'binary': $text .= chr(rand(0, 31)); break; case 'binary-text': default: $text .= rand(0, 1); break; } } $text .= "\n"; $t1 = microtime(TRUE); print "Iteration $i - " . (($t1 - $t0) * 1000) . ' ms' . "\n"; $t0 = $t1; } // Create filename. $filename = '/tmp/' . $filename . '.txt'; //file_put_contents($filename, $text); return $filename; } echo generateFile('exceeding_post_max_size', ceil(($post_max_size + 1024) / 1024), 1024); ``` Resulted in this output in previous versions: ``` ... Iteration 1016 - 1.060962677002 ms Iteration 1017 - 1.3351440429688 ms Iteration 1018 - 1.4958381652832 ms Iteration 1019 - 1.5652179718018 ms Iteration 1020 - 1.133918762207 ms Iteration 1021 - 1.3449192047119 ms Iteration 1022 - 1.0910034179688 ms Iteration 1023 - 2.5720596313477 ms ``` But I expected this output instead: ``` Iteration 0 - 1.6670227050781 ms Iteration 1 - 3.5400390625 ms Iteration 2 - 5.9168338775635 ms Iteration 3 - 8.7440013885498 ms Iteration 4 - 11.125087738037 ms Iteration 5 - 13.100862503052 ms Iteration 6 - 14.358997344971 ms Iteration 7 - 19.643068313599 ms Iteration 8 - 21.284103393555 ms Iteration 9 - 24.443864822388 ms Iteration 10 - 29.021978378296 ms Iteration 11 - 29.219150543213 ms Iteration 12 - 29.844999313354 ms Iteration 13 - 33.437013626099 ms Iteration 14 - 35.980939865112 ms Iteration 15 - 37.060976028442 ms Iteration 16 - 40.301084518433 ms Iteration 17 - 45.086860656738 ms Iteration 18 - 47.156095504761 ms Iteration 19 - 54.861068725586 ms Iteration 20 - 59.279918670654 ms Iteration 21 - 55.058002471924 ms Iteration 22 - 62.628984451294 ms Iteration 23 - 62.710046768188 ms Iteration 24 - 66.666841506958 ms Iteration 25 - 67.9612159729 ms Iteration 26 - 73.35090637207 ms Iteration 27 - 73.814868927002 ms Iteration 28 - 81.268072128296 ms Iteration 29 - 86.863994598389 ms Iteration 30 - 86.045980453491 ms Iteration 31 - 89.563131332397 ms Iteration 32 - 93.811988830566 ms Iteration 33 - 104.84790802002 ms Iteration 34 - 103.92713546753 ms Iteration 35 - 118.44992637634 ms Iteration 36 - 117.29502677917 ms Iteration 37 - 122.51305580139 ms Iteration 38 - 147.05491065979 ms Iteration 39 - 145.72691917419 ms Iteration 40 - 145.61200141907 ms Iteration 41 - 157.13310241699 ms Iteration 42 - 132.14802742004 ms Iteration 43 - 134.90295410156 ms Iteration 44 - 139.23907279968 ms Iteration 45 - 172.71780967712 ms Iteration 46 - 156.75115585327 ms Iteration 47 - 142.99201965332 ms Iteration 48 - 142.3168182373 ms Iteration 49 - 142.22002029419 ms Iteration 50 - 147.85099029541 ms Iteration 51 - 150.74706077576 ms Iteration 52 - 183.83002281189 ms Iteration 53 - 185.53805351257 ms Iteration 54 - 156.80599212646 ms Iteration 55 - 165.35997390747 ms Iteration 56 - 180.59802055359 ms Iteration 57 - 179.68106269836 ms Iteration 58 - 180.39298057556 ms Iteration 59 - 176.19895935059 ms ``` ### PHP Version PHP 8.3.0-alpha2 ### Operating System Alpinelinux, Ubuntu