Bug #71858 [NEW]: A lot of performance loss for huge bit operation

From: jacky at xsteach dot com Operating system: Mac OS X PHP version: 7.0.4 Package: Performance problem Bug Type: Bug Bug description:A lot of performance loss for huge bit operation Description: ------------ I run an image filter script, which contain many bit operation, to test an image. Whatever the image size, a lot of performance loss with php 5.6 or 7.0 than 5.5. With a small image, run it with php5.5 is about 10x fast than php 5.6/7.0. Which part goes wrong？ Test script: --------------- <?php // // +-----------------------------------+ // | Image Filter v 1.0 | // | http://www.SysTurn.com | // +-----------------------------------+ // // // This program is free software; you can redistribute it and/or modify // it under the terms of the ISLAMIC RULES and GNU Lesser General Public // License either version 2, or (at your option) any later version. // // ISLAMIC RULES should be followed and respected if they differ // than terms of the GNU LESSER GENERAL PUBLIC LICENSE // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the license with this software; // If not, please contact support @ S y s T u r n .com to receive a copy. // class ImageFilter { #R G B private $colorA = 7944996; #79 3B 24 private $colorB = 16696767; #FE C5 BF private $arA = array(); private $arB = array(); function __construct() { $this->arA['R'] = ($this->colorA >> 16) & 0xFF; $this->arA['G'] = ($this->colorA >> 8) & 0xFF; $this->arA['B'] = $this->colorA & 0xFF; $this->arB['R'] = ($this->colorB >> 16) & 0xFF; $this->arB['G'] = ($this->colorB >> 8) & 0xFF; $this->arB['B'] = $this->colorB & 0xFF; } function getScore($image) { $x = 0; $y = 0; $img = $this->_getImageResource($image, $x, $y); if(!$img) return false; $score = 0; $xPoints = array($x/8, $x/4, ($x/8 + $x/4), $x-($x/8 + $x/4), $x-($x/4), $x-($x/8)); $yPoints = array($y/8, $y/4, ($y/8 + $y/4), $y-($y/8 + $y/4), $y-($y/8), $y-($y/8)); $zPoints = array($xPoints[2], $yPoints[1], $xPoints[3], $y); for($i=1; $i<$x; $i++) { for($j=1; $j<$y; $j++) { $color = imagecolorat($img, $i, $j); if($color >= $this->colorA && $color <= $this->colorB) { $color = array('R'=> ($color >> 16) & 0xFF, 'G'=> ($color >> 8) & 0xFF, 'B'=> $color & 0xFF); if($color['G'] >= $this->arA['G'] && $color['G'] <= $this->arB['G'] && $color['B'] >= $this->arA['B'] && $color['B'] <= $this->arB['B']) { if($i >= $zPoints[0] && $j >= $zPoints[1] && $i <= $zPoints[2] && $j <= $zPoints[3]) { $score += 3; } elseif($i <= $xPoints[0] || $i >=$xPoints[5] || $j <= $yPoints[0] || $j >= $yPoints[5]) { $score += 0.10; } elseif($i <= $xPoints[0] || $i >=$xPoints[4] || $j <= $yPoints[0] || $j >= $yPoints[4]) { $score += 0.40; } else { $score += 1.50; } } } } } imagedestroy($img); $score = sprintf('%01.2f', ($score * 100) / ($x * $y)); if($score > 100) $score = 100; return $score; } public function getScoreAndFill($image, $outputImage) { $x = 0; $y = 0; $img = $this->_getImageResource($image, $x, $y); if(!$img) return false; $score = 0; $xPoints = array($x/8, $x/4, ($x/8 + $x/4), $x-($x/8 + $x/4), $x-($x/4), $x-($x/8)); $yPoints = array($y/8, $y/4, ($y/8 + $y/4), $y-($y/8 + $y/4), $y-($y/8), $y-($y/8)); $zPoints = array($xPoints[2], $yPoints[1], $xPoints[3], $y); for($i=1; $i<=$x; $i++) { for($j=1; $j<=$y; $j++) { $color = imagecolorat($img, $i, $j); if($color >= $this->colorA && $color <= $this->colorB) { $color = array('R'=> ($color >> 16) & 0xFF, 'G'=> ($color >> 8) & 0xFF, 'B'=> $color & 0xFF); if($color['G'] >= $this->arA['G'] && $color['G'] <= $this->arB['G'] && $color['B'] >= $this->arA['B'] && $color['B'] <= $this->arB['B']) { if($i >= $zPoints[0] && $j >= $zPoints[1] && $i <= $zPoints[2] && $j <= $zPoints[3]) { $score += 3; imagefill($img, $i, $j, 16711680); } elseif($i <= $xPoints[0] || $i >=$xPoints[5] || $j <= $yPoints[0] || $j >= $yPoints[5]) { $score += 0.10; imagefill($img, $i, $j, 14540253); } elseif($i <= $xPoints[0] || $i >=$xPoints[4] || $j <= $yPoints[0] || $j >= $yPoints[4]) { $score += 0.40; imagefill($img, $i, $j, 16514887); } else { $score += 1.50; imagefill($img, $i, $j, 512); } } } } } imagejpeg($img, $outputImage); imagedestroy($img); $score = sprintf('%01.2f', ($score * 100) / ($x * $y)); if($score > 100) $score = 100; return $score; } protected function _getImageResource($image, &$x, &$y) { $info = getimagesize($image); $x = $info[0]; $y = $info[1]; switch( $info[2] ) { case IMAGETYPE_GIF: return @imagecreatefromgif($image); case IMAGETYPE_JPEG: return @imagecreatefromjpeg($image); case IMAGETYPE_PNG: return @imagecreatefrompng($image); default: return false; } } } function microtime_float() { list($usec, $sec) = explode(" ", microtime()); return ((float)$usec + (float)$sec); } $time_start = microtime_float(); $filter = new ImageFilter(); echo $filter->getScore('test.jpg').PHP_EOL; $time_end = microtime_float(); $time = $time_end - $time_start; echo "Done in $time seconds\n"; Expected result: ---------------- fast execution. Actual result: -------------- slower than php 5.5 -- Edit bug report at https://bugs.php.net/bug.php?id=71858&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71858&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71858&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71858&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71858&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71858&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71858&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71858&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71858&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71858&r=support Expected behavior: https://bugs.php.net/fix.php?id=71858&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71858&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71858&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71858&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71858&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71858&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71858&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71858&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71858&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71858&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71858&r=mysqlcfg