PHP image processing class library and demonstration sharing, php image processing class library_PHP tutorial

PHP image processing class library and demonstration sharing, php image processing class library

I simply wrote a PHP image processing class library. Although it has relatively few functions, it is currently useless. If it is too advanced, please fill it in when you use it in the future. Or if anyone can give me some suggestions on what functions to add, or if you have any needs, you can tell me. I have time to add it. If anyone expands this class library, Please take it out and share it with everyone. The code can be used now. There are not many things to consider. If you have any better suggestions, please tell me, thank you

Img.php

<?php
/**
 * Created by PhpStorm.
 * User: MCtion
 * Date: 2015/5/14 0014
 * Time: 15:36
 * 简单的图像类库，本类中所有相对路径均基于网站根目录，如需修改，则修改常量__WEBROOT__即可
 * 功能：指定文字内容创建图片（不支持中文）、创建验证码图片、创建缩略图、其他功能待续
 * 方法：
 *   Style(array $Options) 设置图片样式，每次设定前将重置为默认样式
 *   Create_Img_Png() 创建PNG图像，相关属性由Style指定
 *   Create_Img_Jpeg() 创建JPEG图像，相关属性由Style指定
 *   Create_Verify() 创建验证码图像，相关属性由Style指定
 *   Get_Verify() 获得创建的验证码值，MD5加密
 *   Load_Img(string $FilePath) 加载图像，创建图像源，供其他方法调用源，FilePath为图像相对路径
 *   Create_Thumb(string $FileName,string $FilePath) 创建由Load_Img()加载的图像的缩略图，FileName为保存后的图像前缀，FilePath为保存图像的相对路径，不包含文件名（例：/Uploads/images/Thumb/）
 */
 
if(!defined("__WEBROOT__")) define("__WEBROOT__",$_SERVER[''DOCUMENT_ROOT'']);
 
class Img {
  protected $_Img; //图片源
  protected $_FileImg; //加载的图片源
  protected $_FileInfo; //加载的图片的信息数组
  protected $_PicInfo; //加载的图片的宽高等信息数组
  protected $_Rand = ''abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ1234567890''; //随机因子
  protected $_Code = ''''; //验证码
  public $Width = 300;//图片默认宽
  public $Height = 80; //图片默认高
  public $BackgroundColor = "000000";
  public $Font = "/phps/Public/Font/ARIALNB.TTF"; //默认字体
  public $FontSize = 16; //默认字体字号
  public $FontColor = "ffffff"; //默认字体颜色
  public $Content = "Test Word";
  public $Align = "left";
  public $Codes = 4; //验证码个数
  public $Line = 6; //干扰线条的个数
  public $LoadErr = ''''; //错误信息
 
  //public function __construct(){}
 
  /** 设置图片属性
   * @param array $Options 属性数组
   * @return $this 返回对象
   */
  public function Style($Options){
    $this -> _Re_Set();
    foreach($Options as $K=>$V){
      if(in_array($K,array(''Width'',''Height'',''BackgroundColor'',''Font'',''FontSize'',''FontColor'',''Content'',''Align'',''Codes'',''Line'',''Snow''))){
        if($K == "BackgroundColor" || $K == "FontColor"){
          if(preg_match("#([a-zA-Z0-9]{6})#",$V)) $this -> $K = $V;
        }else{
          $this -> $K = $V;
        }
      }
    }
    return $this;
  }
 
  /**
   * 重置属性，不提供外部访问
   */
  protected function _Re_Set(){
    $this -> Width = 100;
    $this -> Height = 30;
    $this -> BackgroundColor = "000000";
    $this -> Font = "/phps/Public/Font/ARIALNB.TTF";
    $this -> FontSize = 16;
    $this -> FontColor = "ffffff";
    $this -> Align = "left";
    $this -> Codes =4;
    $this -> Line = 6;
  }
 
  /**
   * 创建图像源、添加背景、创建图像
   * @param bool $BGC 指定是否创建背景色及矩形块
   */
  protected function _Create_Img_GB($BGC = True){
    $this -> _Img = imagecreatetruecolor($this -> Width,$this -> Height); //创建背景源
    if($BGC){
      preg_match("#([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})#",$this -> BackgroundColor,$ColorArr); //将颜色值分隔成三组16位进制数
      $Color = imagecolorallocate($this -> _Img,hexdec($ColorArr[1]),hexdec($ColorArr[2]),hexdec($ColorArr[3])); //给Img图像源添加背景色
      imagefilledrectangle($this -> _Img,0,$this -> Height,$this -> Width,0,$Color); //创建图像
    }
  }
 
  /**
   * 创建随机验证码
   */
  protected function _Create_Code(){
    $Len = strlen($this -> _Rand) - 1;
    for($i = 0;$i < $this -> Codes;$i++){
      $this -> _Code .= $this -> _Rand[mt_rand(0,$Len)];
    }
  }
 
  /**
   * 向图像中写入字符串，暂不支持中文
   */
  protected function _Write_Text(){
    $FontWidth = imagefontwidth($this -> FontSize); //获取字号的一个字符的宽度
    preg_match_all(''/(.)/us'', $this -> Content, $TextArr); //将内容分隔成数组一遍统计个数
    $FontHeight = imagefontheight($this -> FontSize); //获取字号的高度
    $X = ceil(($this -> Width - ($FontWidth * count($TextArr[0]))) / 2); //设置X轴距左边距的距离
    $Y = ceil(($this -> Height + $FontHeight) / 2); //设置Y轴距上边距的距离
    preg_match("#([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})#",$this -> FontColor,$ColorArr);
    $Color = imagecolorallocate($this -> _Img,hexdec($ColorArr[1]),hexdec($ColorArr[2]),hexdec($ColorArr[3])); //设置文字颜色
    imagettftext($this -> _Img,$this -> FontSize,0,$X,$Y,$Color,__WEBROOT__.$this -> Font,$this -> Content); //写入内容
  }
 
  /**
   * 向图像中写入验证码
   */
  protected function _Write_Code(){
    $_X = $this -> Width / $this -> Codes; //设置宽高比
    for($i = 0;$i < $this -> Codes;$i++){ //循环Codes次，每次生成一位验证码值
      $Color = imagecolorallocate($this -> _Img,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156)); //随机生成验证码值的颜色
      imagettftext($this -> _Img,$this -> FontSize,mt_rand(-30,30),$_X*$i+mt_rand(1,5),$this -> Height / 1.3,$Color,__WEBROOT__.$this -> Font,$this -> _Code[$i]); //生成一位验证码值
    }
  }
 
  /**
   * 向图像中写入干扰线条
   */
  protected function _Write_Line() { //生成干扰线条
    for ($i=0;$i < $this -> Line;$i++) {
      $Color = imagecolorallocate($this -> _Img,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156));
      imageline($this -> _Img,mt_rand(0,$this -> Width),mt_rand(0,$this -> Height),mt_rand(0,$this -> Width),mt_rand(0,$this -> Height),$Color);
    }
  }
 
  /**
   * 设置图像类型为JPEG
   */
  protected function _Img_Jpeg(){
    header(''Content-type:image/jpeg'');
    imagejpeg($this -> _Img);
    imagedestroy($this -> _Img);
  }
 
  /**
   * 设置图像类型为PNG
   */
  protected function _Img_Png(){
    header(''Content-type:image/png'');
    imagepng($this -> _Img);
    imagedestroy($this -> _Img);
  }
 
  /**
   * 创建JPEG的字符串图像
   */
  public function Create_Img_Jpg(){
    $this -> _Create_Img_GB(True);
    $this -> _Write_Text();
    $this -> _Img_Jpeg();
  }
 
  /**
   * 创建PNG的字符串图像
   */
  public function Create_Img_Png(){
    $this -> _Create_Img_GB(True);
    $this -> _Write_Text();
    $this -> _Img_Png();
  }
 
  /**
   * 创建验证码的PNG图像
   */
  public function Create_Verify(){
    $this -> BackgroundColor = '''';
    for($I = 0;$I < 3;$I++){
      $this -> BackgroundColor .= dechex(mt_rand(20,155));
    }
    $this -> _Create_Img_GB(True);
    $this -> _Create_Code();
    $this -> _Write_Line();
    $this -> _Write_Code();
    $this -> _Img_Png();
  }
 
  /**
   * 外部获取MD5加密后的验证码
   * @return string
   */
  public function Get_Verify(){
    return md5($this -> _Code);
  }
 
  /**
   * 加载一个图像文件，并获取图像相关信息
   * @param string $FilePath 图像相对路径地址
   * @return $this|bool 成功返回对象，否则返回FALSE
   */
  public function Load_Img($FilePath){
    $FilePath = __WEBROOT__.$FilePath;
    if(!is_file($FilePath)){
      $this -> LoadErr = "路径错误，文件不存在";
      Return False;
    }
    $this -> _PicInfo = getimagesize($FilePath);
    $this -> _FileInfo = pathinfo($FilePath);
    switch($this -> _PicInfo[2]){
      case 1:$this ->_FileImg = imagecreatefromgif($FilePath);break;
      case 2:$this ->_FileImg = imagecreatefromjpeg($FilePath);break;
      case 3:$this ->_FileImg = imagecreatefrompng($FilePath);break;
      default:$this -> LoadErr = "类型错误，不支持的图片类型";Return False;
    }
    Return True;
  }
 
  /**
   * 创建缩略图
   * @param string $FileName 保存的图片名称前缀
   * @param string $FilePath 保存图片的相对路径
   * @return mixed 返回生成的图片的信息数组
   */
  public function Create_Thumb($FileName,$FilePath){
    $SavePath = __WEBROOT__.$FilePath;
    if(!file_exists($SavePath)){
      mkdir($SavePath,0777,true);
    }
    $FileName = $FileName.date("YmdHis").rand(100,999).''.''.$this -> _FileInfo[''extension''];
    $FilePath = $FilePath.$FileName;
    $SavePath = $SavePath.$FileName;
    $this -> _Create_Img_GB(False);
    imagecopyresampled($this -> _Img,$this -> _FileImg,0,0,0,0,$this -> Width,$this -> Height,$this -> _PicInfo[0],$this -> _PicInfo[1]);
    switch($this -> _PicInfo[2]){
      case 1:imagegif($this -> _Img,$SavePath);break;
      case 2:imagejpeg($this -> _Img,$SavePath);break;
      case 3:imagepng($this -> _Img,$SavePath);break;
    }
    $FIleInfo[''FileName''] = $FileName;
    $FIleInfo[''FilePath''] = $FilePath;
    Return $FIleInfo;
  }
}

Usage examples

$Img = new Img();
 
$Options[''Width''] = 300;
$Options[''Height''] = 100;
$Options[''Content''] = "Test Create Img";
$Options[''FontColor''] = "FF0000";
$Options[''BackgroundColor''] = "AAAAAA";
$Img -> Style($Options) -> Create_Img_Jpg();
 
if($Img -> Load_Img("/Public/images/ad1.png")){
  $FileInfo = $Img -> Style(array(''Width''=>30,''Height''=>30)) -> Create_Thumb("Thumb","/Uploads/images/");
  var_dump($FileInfo);
}else{
  die("加载图像失败,".$Img -> LoadErr);
}<br />转载自:http://www.aspnetjia.com

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