<?php
namespace vendor\gd\xx;
/**
* GDImg is the model behind the image.
*
* //设定图片尺寸
* $width = 300;
* $height = 150;
* //图片一
* $src = ‘001.jpg‘;
* //$content = ‘hello‘;
* //$font_url = ‘arial.ttf‘;
* //$size = 20;
* //$color = [255,255,255,20];
* //$local = [‘x‘ => 20, ‘y‘ => 30];
* //$angle = 10;
* //图片二
* $source = "002.jpg";
* $local = [‘x‘ => 0, ‘y‘ => $height]; //图片位置
* $alpha = 100; //图片透明度
*
* $image = new Image($src);
* // TODO:以下宽高为配置的主面板显示宽高和图片一宽高
* $image->thumb($width, $height*2, $width, $height); //压缩图片
* //$image->fontMark($content, $font_url, $size, $color, $local, $angle); //合成文字水印
* $image->imageMark($source, $local, $alpha, $width, $height); //合成图片水印并压缩
* $image->show(); //打印在浏览器
* //$image->save(‘abc‘); //保存在硬盘中
*
*/
class GDImg extends Model{
/**
* 内存中的图片
*/
private $image;
/**
* 图片基本信息
*/
public $info;
/**
* 打开一张图片,读取到内存中
* @ $src为图片本地路径
*/
public function __construct($src){
$info = getimagesize($src);
$this->info = [
‘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)
* @ $width为面板宽度
* @ $height为面板高度
* @ $width2为图片一宽度
* @ $height2为图片一高度
*/
public function thumb($width, $height, $width2, $height2){
$image_thumb = imagecreatetruecolor($width, $height);
imagecopyresampled($image_thumb, $this->image, 0, 0, 0, 0, $width2, $height2, $this->info[‘width‘], $this->info[‘height‘]);
imagedestroy($this->image);
$this->image = $image_thumb;
}
/**
* 操作图片(添加文字水印)
* @ $content为文字内容
* @ $font_url为字体路径
* @ $size为字体大小
* @ $color为字体颜色
* @ $local为字体位置
*/
public function fontMark($content, $font_url, $size, $color, $local, $angle){
$col = imagecolorallocatealpha($this->image, $color[0], $color[1], $color[2], $color[3]);
imagettftext($this->image, $size, $angle, $local[‘x‘], $local[‘y‘], $col, $font_url, $content);
}
/**
* 操作图片(添加图片水印)
* @ $source为本地图片路径
* @ $local为图片位置
* @ $alpha为图片透明度
*/
public function imageMark($source, $local, $alpha, $width, $height){
$info2 = getimagesize($source);
$type2 = image_type_to_extension($info2[2], false);
$fun2 = "imagecreatefrom{$type2}";
$water = $fun2($source);
//压解水印
$image_thumb2 = imagecreatetruecolor($width, $height);
imagecopyresampled($image_thumb2, $water, 0, 0, 0, 0, $width, $height, $this->info[‘width‘], $this->info[‘height‘]);
imagecopymerge($this->image, $image_thumb2, $local[‘x‘], $local[‘y‘], 0, 0, $info2[0], $info2[1], $alpha);
imagedestroy($water);
}
/**
* 在浏览器中显示图片
*/
public function show(){
header("Content-type:". $this->info[‘mime‘]);
$fun = "image{$this->info[‘type‘]}";
$fun($this->image);
}
/**
* 把图片保存在硬盘
* @ $newname为保存图片的名称
*/
public function save($newname){
$fun = "image{$this->info[‘type‘]}";
$fun($this->image, $newname.‘.‘.$this->info[‘type‘]);
}
/**
* 销毁图片
*/
public function __destruct(){
imagedestroy($this->image);
}
}本文出自 “Shows technology” 博客,请务必保留此出处http://wangzhijun.blog.51cto.com/9660708/1702036
原文:http://wangzhijun.blog.51cto.com/9660708/1702036