用php和imagemagick来处理图片文件的上传和缩放处理(转贴)
用php和imagemagick来处理图片文件的上传和缩放处理
php处理文件的上传是很简便的,但是如果要对上传的图片进行缩放处理的话,虽说能用GD来做,但是
要进行比较繁琐的处理。ImageMagick是一个图像处理包,一般的Linux软件包中都会有的。它包含了许
多处理图像的工具,它可以进行图像文件格式的转化还可以对图像进行各种处理,其中我们将用到它的
图像缩放功能。这个通过它的软件包中的工具convert来实现,这样来调用
convert -geometry 宽x高 源文件 缩放后的文件
请在当前目录下建立一个images的目录,并且能让web执行用户可写,这个目录用来存放上载后的图片和
缩放的图片。
底下是一个简单小例子,包括图片上传和处理,在RedHat6.0+php3.0.12下测试通过。
uploadform.html:文件上传表单
〈HTML>
〈HEAD>
〈TITLE>选择文件〈/TITLE>
〈/HEAD>
〈BODY ALIGN="CENTER">
〈FORM ENCTYPE="multipart/form-data" ACTION="upload.php3" METHOD=POST>
选择图片文件: 〈INPUT NAME="image" TYPE="file">
〈INPUT TYPE="submit" VALUE="Send File">
〈/FORM>
〈/BODY>
〈/HTML>
upload.php3:处理上传后的图片文件
〈html>
〈head>
〈title>处理〈/title>
〈/head>
〈body>
〈?
$flag = "true";
if(isset($image) && $image &&
($image_type = "image/gif" || $image_type = "image/png"
|| $image_type = "image/pjpeg")){ //判断上载文件的格式等
$dest_image = "./images/".$image_name;
if(@copy($image,$dest_image)){ //拷贝上载文件到images目录下
$small_image = "./images/small".$image_name;

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