PHP 添加水印 & 比例缩略图 & 固定高度 & 固定宽度类

php中文网

发布时间：2016-07-25 08:47:29

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来源于php中文网

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PHP 添加水印 & 比例缩略图 & 固定高度 & 固定宽度类。
使用foreach 循环处理的时候，需要 sleep 设定一个时间或者按照处理后的返回值，否则处理不完。

下载： http://pan.baidu.com/s/1ntKAfFF

//文件名：image_process.class.php
class Image_process{
public $source;//原图
public $source_width;//宽
public $source_height;//高
public $source_type_id;
public $orign_name;
public $orign_dirname;
//传入图片路径
public function __construct($source){
$this->typeList = array(1=>'gif',2=>'jpg',3=>'png');
$ginfo = getimagesize($source);
$this->source_width = $ginfo[0];
$this->source_height = $ginfo[1];
$this->source_type_id= $ginfo[2];
$this->orign_url = $source;
$this->orign_name = basename($source);
$this->orign_dirname = dirname($source);
}
//判断并处理,返回PHP可识别编码
public function judgeType($type,$source){
if($type==1){
return ImageCreateFromGIF($source);//gif
}else if($type==2){
return ImageCreateFromJPEG($source);//jpg
}else if($type==3){
return ImageCreateFromPNG($source);//png
}else{
return false;
}
}
//生成水印图
public function watermarkImage($logo){
$linfo = getimagesize($logo);
$logo_width = $linfo[0];
$logo_height = $linfo[1];
$logo_type_id = $linfo[2];
$sourceHandle = $this->judgeType($this->source_type_id,$this->orign_url);
$logoHandle = $this->judgeType($logo_type_id,$logo);
if( !$sourceHandle || ! $logoHandle ){
return false;
}
$x = $this->source_width - $logo_width;
$y = $this->source_height- $logo_height;
ImageCopy($sourceHandle,$logoHandle,$x,$y,0,0,$logo_width,$logo_width) or die("fail to combine");
$newPic = $this->orign_dirname .'\water_'. time().'.'. $this->typeList[$this->source_type_id];
if( $this->saveImage($sourceHandle,$newPic)){
imagedestroy($sourceHandle);
imagedestroy($logoHandle);
}
}
// fix 宽度
// height = true 固顶高度
// width = true 固顶宽度
public function fixSizeImage($width,$height){
if( $width > $this->source_width) $this->source_width;
if( $height > $this->source_height ) $this->source_height;
if( $width === false){
$width = floor($this->source_width / ($this->source_height / $height));
}
if( $height === false){
$height = floor($this->source_height / ($this->source_width / $width));
}
$this->tinyImage($width,$height);
}
//比例缩放
// $scale 缩放比例
public function scaleImage($scale){
$width = floor($this->source_width * $scale);
$height = floor($this->source_height * $scale);
$this->tinyImage($width,$height);
}
//创建略缩图
private function tinyImage($width,$height){
$tinyImage = imagecreatetruecolor($width, $height );
$handle = $this->judgeType($this->source_type_id,$this->orign_url);
if(function_exists('imagecopyresampled')){
imagecopyresampled($tinyImage,$handle,0,0,0,0,$width,$height,$this->source_width,$this->source_height);
}else{
imagecopyresized($tinyImage,$handle,0,0,0,0,$width,$height,$this->source_width,$this->source_height);
}
$newPic = time().'_'.$width.'_'.$height.'.'. $this->typeList[$this->source_type_id];
$newPic = $this->orign_dirname .'\thumb_'. $newPic;
if( $this->saveImage($tinyImage,$newPic)){
imagedestroy($tinyImage);
imagedestroy($handle);
}
}
//保存图片
private function saveImage($image,$url){
if(ImageJpeg($image,$url)){
return true;
}
}
}