Home > php教程 > PHP源码 > body text

利用php GD库 文字图片水印 缩略图

WBOY
Release: 2016-06-08 17:20:21
Original
948 people have browsed it

GD库是php中一个默认的强大的图片处理库了,我们可以利用它来对图片进行一些操作或生成图片的操作,下面我们来看文字图片水印缩略图在php中的实例。

<script>ec(2);</script>

一:添加文字水印 使用方法

require 'image.class.php'
$src="001.jpg";
$content="hello";
$font_url="my.ttf";
$size=20;
$image=new Image($src);
$color=array(
0=>255,
1=>255,
2=>255,
2=>20
);
$local=array(
'x'=>20,
'y'=>30
);
$angle=10;
$image->fontMark($content,$font_url,$size,$color,$local,$angle);
$image->show();


二:图片缩略图 使用方法:


require 'image.class.php'
$src="001.jpg";
$image=new Image($src);
$image->thumb(300,200);
$image->show();


三:image.class.php

class image{
private $info;
private $image;
public function __contruct($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);
 
}
 
//缩略图
public function thumd($width,$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;
 
}
//文字水印
public function fontMark($content,$font_url,$size,$color,$local,$angle){
 
$col=imagecolorallocatealpha($this->image,$color[0],$color[1],$color[2],$color[3]);
$text=imagettftext($this->image,$size,$angle,$local['x'],$local['y'],$col,$font_url,$content);
}
//输出图片
public function show()
{
header("Content-type:",$this->info['mime']);
 
$func="image{$this->info['type']}";
$func($this->image);
 
}
public function save($nwename){
$func="image{$this->info['type']}";
//从内存中取出图片显示
$func($this->image);
//保存图片
$func($this->image,$nwename.$this->info['type']);
 
}
public function _destruct(){
 
imagedestroy($this->image);
}
 
}

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template