<?php
class Image{
/**
*内存中的图片
*/
private $image;
/**
* 图片的基本信息
*/
private $info;
/**
* 打开一张图片,读取到内存中
*/
public function __construct($src){
$info = getimagesize($src);
$this->info = array(
'width' => $info[0],
'height' => $info[1],
'type' => image_type_to_extension($info[2],false),
'mime' => $info['mime']
);
$fun = "imagecreatefrom{$this->info['type']}";
$this->image = $fun($src);
}
/**
* 操作图片(压缩)
*/
public function thumb($width,$height){
$image_thumb = imagecreatetruecolor($width,$height);
imagecopyresampled($image_thumb,$this->image,0,0,0,0,$width,$height,$this->info['width'],$this->info['height']);
imagedestroy($this->image);
$this->image = $image_thumb;
}
/**
* 输出图片
*/
public function show(){
header('Content-type:',$this->info['mime']);
$funs = "image{$this->info['type']}";
$funs($this->image);
}
/**
* 把图片保存在硬盘里
*/
public function save($newname){
$funs = "image{$this->info['type']}";
$funs($this->image,$newname.'.'.$this->info['type']);
}
/**
* 销毁图片
*/
public function __destruct(){
imagedestroy($this->image);
}
}
?>