Pet*_*gad 1 php optimization performance
我写了一个小函数来获取一个url,并调整图像大小并将其存储在我的本地,但是当需要创建文件夹时脚本运行大约0.85秒,而调整大小时需要0.64秒.我目前支持JPEG和PNG,如下所示.
我想知道是否有更快的方法或我正在做的事情需要很长时间,因为我现在的时间对我来说是不可接受的,我真的希望让它更快地执行.
任何想法/想法都非常感谢.
谢谢!
function getTime() {
$timer = explode( ' ', microtime() );
$timer = $timer[1] + $timer[0];
return $timer;
}
function createThumb($thumb, $ids){
$start = getTime();
// File and new size
$filename = $thumb;
// Get new dimensions
$img1 = getimagesize($filename);
if ($img1[0] > $img1[1]) {
$percentage = ('72' / $img1[0]);
} else {
$percentage = ('72' / $img1[1]);
}
$new_width = $img1[0] * $percentage;
$new_height = $img1[1] * $percentage;
// Resample
$image_p = imagecreatetruecolor($new_width, $new_height);
if($img1['mime']=='image/png'){
$image = imagecreatefrompng($filename);
imagealphablending($image_p, false);
imagesavealpha($image_p,true);
$transparent = imagecolorallocatealpha($image_p, 255, 255, 255, 127);
imagefilledrectangle($image_p, 0, 0, $new_width, $new_height, $transparent);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $img1[0], $img1[1]);
}
else {
$image = imagecreatefromjpeg($filename);
}
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $img1[0], $img1[1]);
$imgPath = '/foo/bar/location/'.$ids;
$imgName ='';
//category, product, support
if(!is_dir($imgPath)) {
mkdir($imgPath, 0777);
chmod($imgPath, 0777);
}
if(!is_file($imgPath."/index.html")){
$ourFileName = $imgPath."/index.html";
$ourFileHandle = fopen($ourFileName, 'w') or die("can't open file");
fwrite($ourFileHandle,'<html><body>401</body></html>');
fclose($ourFileHandle);
}
// Output
if($img1['mime']=='image/png'){
$name = rand(1, 156406571337);
$imgName = date("y_m_d_h_m_s").$name.'.png';
imagepng($image_p, $imgPath.'/'.$imgName);
} else {
$name = rand(1, 156406571337);
$imgName = date("y_m_d_h_m_s").$name.'.jpg';
imagejpeg($image_p, $imgPath.'/'.$imgName, 100);
}
$end = getTime();
echo '<strong>createImage</strong>: '.round($end - $start,4).' seconden<br />';
exit;
return $imgName;
}
弗雷德里科,是GD图书馆,速度很慢.: - \我建议使用PHP ImageMagick库.语法是super braindead简单:
$image = new Imagick('image.jpg');
$image->thumbnailImage(100,0); // 100px wide, 0 = preserve aspect ratio
我希望这是你的选择.