PHP uses GD to reduce the image, using transparent format to distort

Zoom out of the picture (is zoomed out, no magnification) found problems with distortion, especially text, apparent distortion, image resources No distortion issues if no transparent format is set

Code snippet:

$newimg = imagecreatetruecolor($newwidth,$newheight);//取消下面这三行设置透明格式则不会失真imagesavealpha($newimg, true);$trans_colour = imagecolorallocatealpha($newimg, 0, 0, 0, 127);imagefill($newimg, 0, 0, $trans_colour);//imagecopyresampled($newimg,$im,0,0,0,0,$newwidth,$newheight,$pic_width,$pic_height);

Strange, I look under the imac is really distorted, but upload to this find there is no problem, I upload an imac preview to everyone to see

Reply content:

Zoom out of the picture (is zoomed out, no magnification) found problems with distortion, especially text, apparent distortion, image resources No distortion issues if no transparent format is set

Code snippet:

$newimg = imagecreatetruecolor($newwidth,$newheight);//取消下面这三行设置透明格式则不会失真imagesavealpha($newimg, true);$trans_colour = imagecolorallocatealpha($newimg, 0, 0, 0, 127);imagefill($newimg, 0, 0, $trans_colour);//imagecopyresampled($newimg,$im,0,0,0,0,$newwidth,$newheight,$pic_width,$pic_height);

Strange, I look under the imac is really distorted, but upload to this find there is no problem, I upload an imac preview to everyone to see

Try Imagick.

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