Imagick压缩图片代码
/* Imagick::setImageCompression Imagick::setImageCompressionQuality Imagick::stripImage Imagick::thumbnailImage Imagick::writeImage */ <?php $image = 'image.jpg'; $directory = '/path/to/image'; $image_location = $directory . "/" . $image; $thumb_destination = $directory . "/t" . $image; $compression_type = Imagick::COMPRESSION_JPEG; $im = new Imagick($image_location); $thumbnail = $im->clone; $thumbnail->setImageCompression($compression_type); $thumbnail->setImageCompressionQuality(40); $thumbnail->stripImage(); $thumbnail->thumbnailImage(100,null); $thumbnail->writeImage($thumb_destination); ?>
可以先参看PHP图片上传程序（完整版） ，这里使用的是PHP with curl API版，代码如下：
<?php
/******************************************************************************
参数说明:
$max_file_size : 上传文件大小限制, 单位BYTE
$destination_folder : 上传文件路径
$watermark : 是否附加水印(1为加水印,其他为不加水印);
使用说明:
1. 将PHP.INI文件里面的"extension=php_gd2.dll"一行前面的;号去掉,因为我们要用到GD库;
2. 将extension_dir =改为你的php_gd2.dll所在目录;
******************************************************************************/
//上传文件类型列表
$uptypes=array(
'image/jpg',
'image/jpeg',
'image/png',
'image/pjpeg',
'image/gif',
'image/bmp',
'image/x-png'
);
$max_file_size=2000000; //上传文件大小限制, 单位BYTE
$destination_folder="uploadimg/"; //上传文件路径
$watermark=2; //是否附加水印(1为加水印,其他为不加水印);
$watertype=1; //水印类型(1为文字,2为图片)
$waterposition=1; //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
$waterstring="http://www.361way.com/"; //水印字符串
$waterimg="361way.gif"; //水印图片
$imgpreview=1; //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/2; //缩略图比例
?>
<?php
function Compressimg($input,$output)
{
$key = "aSiDFS1VD1UfX7pIPdoDFSvoaY_TaAvN";
$request = curl_init();
curl_setopt_array($request, array(
CURLOPT_URL => "https://api.tinypng.com/shrink",
CURLOPT_USERPWD => "api:" . $key,
CURLOPT_POSTFIELDS => file_get_contents($input),
CURLOPT_BINARYTRANSFER => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HEADER => true,
/* Uncomment below if you have trouble validating our SSL certificate.
Download cacert.pem from: http://curl.haxx.se/ca/cacert.pem */
// CURLOPT_CAINFO => __DIR__ . "/cacert.pem",
CURLOPT_SSL_VERIFYPEER => true
));
$response = curl_exec($request);
if (curl_getinfo($request, CURLINFO_HTTP_CODE) === 201) {
/* Compression was successful, retrieve output from Location header. */
$headers = substr($response, 0, curl_getinfo($request, CURLINFO_HEADER_SIZE));
foreach (explode("＼r＼n", $headers) as $header) {
if (substr($header, 0, 10) === "Location: ") {
$request = curl_init();
curl_setopt_array($request, array(
CURLOPT_URL => substr($header, 10),
CURLOPT_RETURNTRANSFER => true,
/* Uncomment below if you have trouble validating our SSL certificate. */
// CURLOPT_CAINFO => __DIR__ . "/cacert.pem",
CURLOPT_SSL_VERIFYPEER => true
));
file_put_contents($output, curl_exec($request));
}
}
} else {
print(curl_error($request));
/* Something went wrong! */
print("Compression failed");
}
}
?>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>361way图片上传程序</title>
<style type="text/css">
<!--
body
{
font-size: 9pt;
}
input
{
background-color: #66CCFF;
border: 1px inset #CCCCCC;
}
-->
</style>
</head>
<body>
<form enctype="multipart/form-data" method="post" name="upform">
上传文件:
<input name="upfile" type="file">
<input type="submit" value="上传"><br>
允许上传的文件类型为:<?php echo implode(',',$uptypes)?>
</form>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (!is_uploaded_file($_FILES["upfile"][tmp_name]))
//是否存在文件
{
echo "图片不存在!";
exit;
}
$file = $_FILES["upfile"];
if($max_file_size < $file["size"])
//检查文件大小
{
echo "文件太大!";
exit;
}
if(!in_array($file["type"], $uptypes))
//检查文件类型
{
echo "文件类型不符!".$file["type"];
exit;
}
# if(file_exists($_FILES["upfile"][name]))
# {
# echo "文件名已存在";
# }
if(!file_exists($destination_folder))
{
mkdir($destination_folder);
}
$filename=$file["tmp_name"];
$upfile_name=$file["name"];
$image_size = getimagesize($filename);
$pinfo=pathinfo($file["name"]);
$ftype=$pinfo['extension'];
$destination = $destination_folder.time().".".$ftype;
if (file_exists($destination) && $overwrite != true)
{
echo "同名文件已经存在了";
exit;
}
if(!move_uploaded_file ($filename, $destination))
{
echo "移动文件出错";
exit;
}
$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
echo " <font color=red>已经成功上传</font><br>文件名: <font color=blue>".$destination_folder.$fname."</font><br>";
echo " 宽度:".$image_size[0];
echo " 长度:".$image_size[1];
echo "<br> 大小:".$file["size"]." bytes";
if($watermark==1)
{
$iinfo=getimagesize($destination,$iinfo);
$nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
$white=imagecolorallocate($nimage,255,255,255);
$black=imagecolorallocate($nimage,0,0,0);
$red=imagecolorallocate($nimage,255,0,0);
imagefill($nimage,0,0,$white);
switch ($iinfo[2])
{
case 1:
$simage =imagecreatefromgif($destination);
break;
case 2:
$simage =imagecreatefromjpeg($destination);
break;
case 3:
$simage =imagecreatefrompng($destination);
break;
case 6:
$simage =imagecreatefromwbmp($destination);
break;
default:
die("不支持的文件类型");
exit;
}
imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);
switch($watertype)
{
case 1: //加水印字符串
imagestring($nimage,2,3,$image_size[1]-15,$waterstring,$black);
break;
case 2: //加水印图片
$simage1 =imagecreatefromgif("361way.gif");
imagecopy($nimage,$simage1,0,0,0,0,85,15);
imagedestroy($simage1);
break;
}
switch ($iinfo[2])
{
case 1:
//imagegif($nimage, $destination);
imagejpeg($nimage, $destination);
break;
case 2:
imagejpeg($nimage, $destination);
break;
case 3:
imagepng($nimage, $destination);
break;
case 6:
imagewbmp($nimage, $destination);
//imagejpeg($nimage, $destination);
break;
}
//覆盖原上传文件
imagedestroy($nimage);
imagedestroy($simage);
}
$output=$destination_folder.$upfile_name;
Compressimg($destination,$output);
unlink($destination);
if($imgpreview==1)
{
echo "<br>图片预览:<br>";
echo "<img src=＼"".$output."＼" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);
echo " alt=＼"图片预览:＼r文件名:".$output."＼r上传时间:＼">";
}
}
?>
</body>
</html>
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