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//缩放图片
/**
* *
*等比缩放
* @param unknown_type $srcImage 源图片路径
* @param unknown_type $toFile 目标图片路径
* @param unknown_type $maxWidth 最大宽
* @param unknown_type $maxHeight 最大高
* @param unknown_type $imgQuality 图片质量
* @return unknown
*/
function resize($srcImage,$toFile,$maxWidth = 100,$maxHeight = 100,$imgQuality=100)
{
list($width, $height, $type, $attr) = getimagesize($srcImage);
if($width < $maxWidth || $height < $maxHeight) return ;
switch ($type) {
case 1: $img = imagecreatefromgif($srcImage); break;
case 2: $img = imagecreatefromjpeg($srcImage); break;
case 3: $img = imagecreatefrompng($srcImage); break;
}
$scale = min($maxWidth/$width, $maxHeight/$height); //求出绽放比例
if($scale < 1) {
$newWidth = floor($scale*$width);
$newHeight = floor($scale*$height);
$newImg = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($newImg, $img, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
$newName = "";
$toFile = preg_replace("/(\.gif|\.jpg|\.jpeg|\.png)/i","",$toFile);
switch($type) {
case 1: if(imagegif($newImg, "$toFile$newName.gif", $imgQuality))
return "$newName.gif"; break;
case 2: if(imagejpeg($newImg, "$toFile$newName.jpg", $imgQuality))
return "$newName.jpg"; break;
case 3: if(imagepng($newImg, "$toFile$newName.png", $imgQuality))
return "$newName.png"; break;
default: if(imagejpeg($newImg, "$toFile$newName.jpg", $imgQuality))
return "$newName.jpg"; break;
}
imagedestroy($newImg);
}
imagedestroy($img);
return false;
}
//直接压制指定大小,不进行等比处理
function resize_2($srcImage,$toFile,$maxWidth = 100,$maxHeight = 100,$imgQuality=100)
{
list($width, $height, $type, $attr) = getimagesize($srcImage);
switch ($type) {
case 1: $img = imagecreatefromgif($srcImage); break;
case 2: $img = imagecreatefromjpeg($srcImage); break;
case 3: $img = imagecreatefrompng($srcImage); break;
}
$scale = min($maxWidth/$width, $maxHeight/$height); //求出绽放比例
$newWidth = $maxWidth;
$newHeight = $maxHeight;
$newImg = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($newImg, $img, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
$newName = "";
switch($type) {
case 1: if(imagegif($newImg, "$toFile$newName.gif", $imgQuality))
return "$newName.gif"; break;
case 2: if(imagejpeg($newImg, "$toFile$newName.jpg", $imgQuality))
return "$newName.jpg"; break;
case 3: if(imagepng($newImg, "$toFile$newName.png", $imgQuality))
return "$newName.png"; break;
default: if(imagejpeg($newImg, "$toFile$newName.jpg", $imgQuality))
return "$newName.jpg"; break;
imagedestroy($newImg);
}
imagedestroy($img);
return false;
}
$f = new SaeFetchurl();
$img_data = $f->fetch( 'http://ss7.sinaimg.cn/bmiddle/488efcbbt7b5c4ae51ca6&690' );
$img = new SaeImage();
$img->setData( $img_data );
$img->resize(200); // 等比缩放到200宽
$img->flipH(); // 水平翻转
$img->flipv(); // 垂直翻转
$new_data = $img->exec(); // 执行处理并返回处理后的二进制数据
// 或者可以直接输出
$img->exec( 'jpg' , true );