具体代码如下所示：
= 600){
$per = 600 / $width;//计算比例
$new_width = $width * $per;
$new_height = $height * $per;
}
switch ($type) {
case 1:
$giftype = check_gifcartoon($imgsrc);
if ($giftype) {
header('Content-Type:image/gif');
$image_wp = imagecreatetruecolor($new_width,$new_height);
$image = imagecreatefromgif($imgsrc);
imagecopyresampled($image_wp,$image,$new_width,$new_height,$width,$height);
//90代表的是质量、压缩图片容量大小
imagejpeg($image_wp,$imgdst,90);
imagedestroy($image_wp);
imagedestroy($image);
}
break;
case 2:
header('Content-Type:image/jpeg');
$image_wp = imagecreatetruecolor($new_width,$new_height);
$image = imagecreatefromjpeg($imgsrc);
imagecopyresampled($image_wp,$height);
//90代表的是质量、压缩图片容量大小
imagejpeg($image_wp,90);
imagedestroy($image_wp);
imagedestroy($image);
break;
case 3:
header('Content-Type:image/png');
$image_wp = imagecreatetruecolor($new_width,$new_height);
$image = imagecreatefrompng($imgsrc);
imagecopyresampled($image_wp,90);
imagedestroy($image_wp);
imagedestroy($image);
break;
}
}
总结
以上所述是小编给大家介绍的PHP等比例压缩图片的实例代码，希望对大家有所帮助。程序员遇到问题都会上（编程之家jb51.cc）查找问题解答方法！如果觉得站点还不错，随手转发给程序员朋友一下！
原文链接：https://www.f2er.com/php/15808.html