php Imagick()扩展,实现将原图截取成不同规格尺寸的图片
使用示例:
http://resource.ecsq.com/getpic.php?src=/image/goods/SUZHOU/201405/102389_1400495466458.jpg&w=500&h=500
(一)getpic.php
<?php
//获取图片参数
$basedir = dirname(dirname(__FILE__))."/file/";
$src = isset($_GET['src'])?$_GET['src']:NULL;
$w = isset($_GET['w'])?$_GET['w']:200;
$h = isset($_GET['h'])?$_GET['h']:'';
$src=\'#\'" //原图是否存在
if(!$src)
{
//$src = 'defaultImage/no_photo01.gif';
$src = 'images/nullpic/nullpic1.jpg';
}
//缓存图片
$tempfile = dirname(__FILE__).'/temp/'.$w.'x'.$h.'_'.str_replace(array('/','\\'), '_', $src);
if(file_exists($tempfile) && filemtime($tempfile)>filemtime($src))
{
$src = $tempfile;
}
else
{
require_once 'gcImage.php';
list($swidth,$sheight) = getimagesize($src);
$image = new gcImage();
if(empty($h))
$h = $w * $sheight/$swidth;
$src = $image->imagickmakethumb($src, $tempfile, $w, $h,90);
}
if(empty($src))
{
//$src = 'defaultImage/no_photo01.gif';
$src = 'images/nullpic/nullpic1.jpg';
}
//下载该图片
$file_extension = strtolower(substr(strrchr($src,'.'),1));
switch($file_extension)
{
case 'gif': $file_mime='image/gif'; break;
case 'png': $file_mime='image/png'; break;
case 'jpg': $file_mime='image/jpg'; break;
default: $file_mime=mime_content_type($src);
}
$length = filesize($src);
Header("Content-type: $file_mime; charset=UTF-8");
Header('Accept-Ranges: bytes');
Header('Accept-Length: '.$length);
//Header('Content-Disposition: attachment; filename=' . $file_name);
$file = fopen($src,'r');
echo fread($file,$length);
fclose($file);
(2)gcImage.php
<?php
/**
* 画像操作
* gcImageMagickService
* @author Founder
* @version 1.0
* @exlcude 作成日:2010/11/05
*/
class gcImage {
/*构造函数-生成缩略图+水印,参数说明:
$srcFile-图片文件名,
$dstFile-另存文件名,
$markwords-水印文字,
$markimage-水印图片,
$dstW-图片保存宽度,
$dstH-图片保存高度,
$rate-图片保存品质*/
//makethumb("a.jpg","b.jpg","50","50");
function makethumb($srcFile, $dstFile, $dstW, $dstH, $rate = 100, $markwords = null, $markimage = null)
{
$data = GetImageSize ( $srcFile );
switch ($data [2]) {
case 1 :
$im = @ImageCreateFromGIF ( $srcFile );
break;
case 2 :
$im = @ImageCreateFromJPEG ( $srcFile );
break;
case 3 :
$im = @ImageCreateFromPNG ( $srcFile );
break;
}
if (! $im)
return False;
$srcW = ImageSX ( $im );
$srcH = ImageSY ( $im );
$dstX = 0;
$dstY = 0;
if ($srcW * $dstH < $srcH * $dstW) {
$fdstH = round ( $srcH * $dstW / $srcW );
$dstY = floor ( ($dstH - $fdstH) / 2 );
$fdstW = $dstW;
} else {
$fdstW = round ( $srcW * $dstH / $srcH );
$dstX = floor ( ($dstW - $fdstW) / 2 );
$fdstH = $dstH;
}
$ni = ImageCreateTrueColor ( $dstW, $dstH );
$dstX = ($dstX > ($dstW / 2)) ? floor ( $dstW / 2 ) : $dstX;
$dstY = ($dstY > ($dstH / 2)) ? floor ( $dstH / 2 ) : $dstY;
$white = ImageColorAllocate ( $ni, 255, 255, 255 );
$black = ImageColorAllocate ( $ni, 0, 0, 0 );
imagefilledrectangle ( $ni, 0, 0, $dstW, $dstH, $white ); // 填充背景色
ImageCopyResized ( $ni, $im, $dstX, $dstY, 0, 0, $fdstW, $fdstH, $srcW, $srcH );
if ($markwords != null) {
$markwords = iconv ( "gb2312", "UTF-8", $markwords );
//转换文字编码
ImageTTFText ( $ni, 20, 30, 450, 560, $black, "simhei.ttf", $markwords ); //写入文字水印
//参数依次为，文字大小|偏转度|横坐标|纵坐标|文字颜色|文字类型|文字内容
} elseif ($markimage != null) {
$wimage_data = GetImageSize ( $markimage );
switch ($wimage_data [2]) {
case 1 :
$wimage = @ImageCreateFromGIF ( $markimage );
break;
case 2 :
$wimage = @ImageCreateFromJPEG ( $markimage );
break;
case 3 :
$wimage = @ImageCreateFromPNG ( $markimage );
break;
}
imagecopy ( $ni, $wimage, 500, 560, 0, 0, 88, 31 ); //写入图片水印,水印图片大小默认为88*31
imagedestroy ( $wimage );
}
ImageJpeg ( $ni, $dstFile, $rate );
touch($dstFile);
imagedestroy ( $ni );
imagedestroy ( $im );
return $dstFile;
}
/*构造函数-生成缩略图+水印,参数说明:
$srcFile-图片文件名,
$dstFile-另存文件名,
$markwords-水印文字,
$markimage-水印图片,
$dstW-图片保存宽度,
$dstH-图片保存高度,
$rate-图片保存品质*/
//makethumb("a.jpg","b.jpg","50","50");
function imagickmakethumb($srcFile, $dstFile, $dstW, $dstH, $rate = 100, $markwords = null, $markimage = null)
{
try {
$image=new Imagick($srcFile);
$image->setImageCompression(Imagick::COMPRESSION_JPEG);
$image->setImageCompressionQuality($rate);
$image->setImageFormat('JPEG');
$image->cropThumbnailImage ($dstW,$dstH);
$image->stripImage();
if (!empty($markwords))
{
$draw = new ImagickDraw();
$draw->setGravity(Imagick::GRAVITY_SOUTHEAST);
$draw->setFont('simhei.ttf');
$draw->setFontSize(12);
$draw->setFillColor('#000');
$image->annotateImage($draw, 6, 6, 0, $markwords);
}
elseif(!empty($markimage))
{
}
$image->writeImage($dstFile);
$image->clear();
$image->destroy();
return $dstFile;
} catch (Exception $e) {
return false;
}
}
}