php中使用GD库生成图形例子

$width=310; //布画宽度

$height=360; //布画高度
$im = imagecreate($width,$height);
$img2=imagecreatefrompng("$url");//获得二维码
$im_WH=getimagesize("$url");//取得二维码图片的属性
$im_W=$im_WH[0];
$im_H=$im_WH[1];
$white = ImageColorAllocate($im, 255,255,255);//定义白色  背景色
$black = ImageColorAllocate($im, 0,0,0);//定义黑色  字体颜色
$rectangelcolor=ImageColorAllocate($im,150,150,150);//定义边框颜色
imagerectangle($im,1,1,$width-1,$height-1,$rectangelcolor);//画边框
imagettftext($im,22,0,15,330,$black,'C:WINDOWSFontsarial.ttf',"$proid");//写入产品id
imagecopy($im,$img2,5,5,0,0,$im_W,$im_H);//合并两张图
$images = mrand4B().time(). '.jpg';//图片新命名
$path = $_SERVER['DOCUMENT_ROOT'].'/static/downloadpic/'.$images;//图片路径
imagejpeg($im,$path);//生成新图放到指定的路径中
imagedestroy($im);//释放内存
return $images;//返回图片名，以便存入数据库

$phpmailer = new PHPMailer();
$phpmailer->IsSMTP();  // 用smtp协议来发
 
$phpmailer->Host = 'smtp.163.com';
$phpmailer->SMTPAuth = true;
$phpmailer->Username = '******'; //163邮箱帐号 @163前面的那个
$phpmailer->Password = '******'; //密码
 
// 可以发信了
 
$phpmailer->From = '*****@163.com';   //邮箱地址
$phpmailer->FromName = 'yanjiadong';
$phpmailer->Subject = '欢迎你注册,你的激活邮件';
$phpmailer->Body = '请点击进行激活';
 
// 添加收件人
$phpmailer->AddAddress('********@qq.com','用户名');
 
// 发信
 
echo $phpmailer->send()?'ok':'fail';

public function __construct(&$G)
    {
        $this->G = $G;
        if (ini_get('magic_quotes_gpc')) {
            $get    = $this->stripSlashes($_REQUEST);
            $post   = $this->stripSlashes($_POST);
            $this->cookie = $this->stripSlashes($_COOKIE);
        } else {
            $get    = $_REQUEST;
            $post   = $_POST;
            $this->cookie = $_COOKIE;
        }

        $this->file = $_FILES;
        $this->get = $this->initData($get);
        $this->post = $this->initData($post);
        $this->url = $this->parseUrl();

    }

..........
    //获取cookie
    public function getCookie($par,$nohead = 0)
    {
        if(isset($this->cookie[CH.$par]))return $this->cookie[CH.$par];
        elseif(isset($this->cookie[$par]) && $nohead)return $this->cookie[$par];
        else return false;
    }

<?php
if (isset($_GET['dir'])) { //设置文件目录 
    $basedir = $_GET['dir'];
} else {
    $basedir = '.';
}

$auto = 1;
checkdir($basedir);

function checkdir($basedir)
{
    if ($dh = opendir($basedir)) {
        while (($file = readdir($dh)) !== false) {
            if ($file != '.' && $file != '..') {
                if (!is_dir($basedir . "/" . $file)) {
                    echo "filename: $basedir/$file " . checkBOM("$basedir/$file") . " <br>";
                } else {
                    $dirname = $basedir . "/" . $file;
                    checkdir($dirname);
                }
            }
        }
        closedir($dh);
    }
}
function checkBOM($filename)
{
    global $auto;
    $contents   = file_get_contents($filename);
    $charset[1] = substr($contents, 0, 1);
    $charset[2] = substr($contents, 1, 1);
    $charset[3] = substr($contents, 2, 1);
    if (ord($charset[1]) == 239 && ord($charset[2]) == 187 && ord($charset[3]) == 191) {
        if ($auto == 1) {
            $rest = substr($contents, 3);
            rewrite($filename, $rest);
            return ("<font color="red">BOM found, automatically removed._<a href="http://www.111cn.net">http://www.111cn.net</a></font>");
        } else {
            return ("<font color="red">BOM found.</font>");
        }
    } else
        return ("BOM Not Found.");
}

function rewrite($filename, $data)
{
    $filenum = fopen($filename, "w");
    flock($filenum, LOCK_EX);
    fwrite($filenum, $data);
    fclose($filenum);
}
?>

<?php
header('content-Type: text/html; charset=utf-8');
$auto=1;/*设置为1标示检测BOM并去除，设置为0标示只进行BOM检测，不去除*/
$basedir='.';
$loop=true;//www.111cn.net echo '当前查找的目录为：'.$basedir.'当前的设置是：';
echo '（1）',$loop?'检查当前目录以及当前目录的子目录':'只针对当前目录进行检测';
echo '（2）',$auto?'检测文件BOM同时去除检测到BOM文件的BOM<br />':'只检测文件BOM不执行去除BOM操作<br />';

checkdir($basedir,$loop);
function checkdir($basedir='',$loop=true){
 $basedir=empty($basedir)?'.':$basedir;
 if($dh=opendir($basedir)){
  while (($file=readdir($dh))!==false){
   if($file!='.'&&$file!='..'){
    if(!is_dir($basedir.'/'.$file)){
     echo '文件: '.$basedir.'/'.$file .checkBOM($basedir.'/'.$file).' <br>';
    }else{
     if(!$loop) continue;
     $dirname=$basedir.'/'.$file;
     checkdir($dirname);
    }
   }
  }
  closedir($dh);
 }
}
function checkBOM($filename){
 global $auto;
 $contents=file_get_contents($filename);
 $charset[1]=substr($contents,0,1);
 $charset[2]=substr($contents,1,1);
 $charset[3]=substr($contents,2,1);
 if(ord($charset[1])==239&&ord($charset[2])==187&&ord($charset[3])==191){
  if($auto==1){
   $rest=substr($contents,3);
   rewrite($filename,$rest);
   return (' <font color=red>找到BOM并已自动去除</font>');
  }else{
   return (' <font color=red>找到BOM</font>');
  }
 }else{
  return (' 没有找到BOM');
 }
}
function rewrite($filename,$data){
 $filenum=fopen($filename,'w');
 flock($filenum,LOCK_EX);
 fwrite($filenum,$data);
 fclose($filenum);
}