/**
* desription 压缩图片
* @param sting $imgsrc 图片路径
* @param string $imgdst 压缩后保存路径
*/
function image_png_size_add($imgsrc, $imgdst)
{
list($width, $height, $type) = getimagesize($imgsrc);
$new_width = ($width > 600 ? 600 : $width) * 0.9;
$new_height = ($height > 600 ? 600 : $height) * 0.9;
switch ($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, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp, $imgdst, 75);
imagedestroy($image_wp);
}
break;
case 2:
header('Content-Type:image/jpeg');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp, $imgdst, 75);
imagedestroy($image_wp);
break;
case 3:
header('Content-Type:image/png');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefrompng($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp, $imgdst, 75);
imagedestroy($image_wp);
break;
}
}
function image_png_size_add($imgsrc, $limit_width)
{
list($width, $height, $type) = getimagesize($imgsrc);
$percent = $limit_width / $width;
//ͼƬѹËõ±È
if ($width <= 220) {
$percent = 1;
}
$new_width = $width * $percent;
$new_height = $height * $percent;
switch ($type) {
case 1:
header('Content-Type:image/gif');
$giftype = check_gifcartoon($imgsrc);
if ($giftype) {
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromgif($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp);
imagedestroy($image_wp);
} else {
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromgif($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp);
imagedestroy($image_wp);
}
break;
case 2:
header('Content-Type:image/jpeg');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp);
imagedestroy($image);
imagedestroy($image_wp);
break;
case 3:
header('Content-Type:image/png');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefrompng($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp);
imagedestroy($image);
imagedestroy($image_wp);
break;
case 4:
$giftype = check_gifcartoon($imgsrc);
if ($giftype) {
header('Content-Type:image/gif');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromgif($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp);
imagedestroy($image_wp);
}
break;
}
}
/**
* desription 压缩图片
* @param sting $imgsrc 图片路径
* @param string $imgdst 压缩后保存路径
*/
function image_png_size_add($imgsrc, $imgdst)
{
////使用GD2
list($width, $height, $type) = getimagesize($imgsrc);
if ($height > $width) {
$scale = $width / $height;
////宽高比
$new_width = ($width > 600 ? 600 * $scale : $width) * 0.9;
///固定高度
$new_height = ($height > 600 ? 600 : $height) * 0.9;
} else {
if ($width >= $height) {
$scale = $height / $width;
////宽高比
$new_width = ($width > 600 ? 600 : $width) * 0.9;
///固定宽度
$new_height = ($height > 600 ? 600 * $scale : $height) * 0.9;
}
}
switch ($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, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp, $imgdst, 75);
//unlink($imgsrc);
imagedestroy($image_wp);
imagedestroy($imgsrc);
imagedestroy($image);
unset($image);
unset($image_wp);
}
break;
case 2:
header('Content-Type:image/jpeg');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp, $imgdst, 75);
//unlink($imgsrc);
imagedestroy($image_wp);
imagedestroy($imgsrc);
imagedestroy($image);
unset($image);
unset($image_wp);
break;
case 3:
header('Content-Type:image/png');
$image_wp = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefrompng($imgsrc);
imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_wp, $imgdst, 75);
//unlink($imgsrc);
imagedestroy($image_wp);
imagedestroy($imgsrc);
imagedestroy($image);
unset($image);
unset($image_wp);
break;
}
}
