Teach you to use php to combine QR code and text into a background image!

Generate the QR code onto the background image, and generate the text onto the background image, it can be done without Limit amplification

1. Picture before generation

Picture after generation

class codeImg
{
	private $date,$img,$main,$width,$height,$target,$white;
    	public function constr($source)
    	{
    		$this->date   = '' . date('Ymd') . '/';
	        $this->img    = $this->date . md5($source) . '.jpg';
	        $this->main   = imagecreatefromjpeg($source);
	        $this->width  = imagesx($this->main);
	        $this->height = imagesy($this->main);
	        $this->target = imagecreatetruecolor($this->width, $this->height);
	        $this->white  = imagecolorallocate($this->target, 255, 255, 255);
        		imagefill($this->target, 0, 0, $this->white);
        		imagecopyresampled($this->target, $this->main, 0, 0, 0, 0, $this->width, $this->height, $this->width, $this->height);
    	}
    	/**
	     * 生成二维码
	     * @param  [type]  $website  [生成二维码地址]
	     * @param  string  $filename [生成二维路经名称]
	     * @param  string  $level    [这个参数可传递的值分别是L(QR_ECLEVEL_L，7%)、M(QR_ECLEVEL_M，15%)、Q(QR_ECLEVEL_Q，25%)、H(QR_ECLEVEL_H，30%)，这个参数控制二维码容错率，不同的参数表示二维码可被覆盖的区域百分比，也就是被覆盖的区域还能识别；]
	     * @param  integer $size     [控制生成图片的大小，默认为4]
	     * @param  integer $margin [控制生成二维码的空白区域大小]
	     * @return [type]            [description]
	     */
	      public function qrencode($website, $filename = false, $level = "L", $size = 4, $margin = 2)
	      {
	      		include "./phpqrcode/qrlib.php";
        			QRcode::png($website, $filename, $level, $size, 2);
	      }
	      /**
	     * 把二维码图片生成到背景图片上及文字
	     * @param  string  $source      背景图片
	     * @param  string  $text1       文字描述
	     * @param  string  $child1      二维码图
	     * @param  integer $textwidth   文字横向位置
	     * @param  integer $textherght  文字高度
	     * @param  integer $$fontSize   字体大小
	     * @param  integer $cate1,$cate2,$cate3 颜色表
	     * @param  string $font         文字字体
	     * @return [type]               [description]
	     */
	     public function generateFont($source, $text1, $textwidth, $textherght, $fontSize = 18, $cate1 = 255, $cate2 = 250, $cate3 = 250, $font = './font/fangsong_GB2312.ttf')
	     {
	     	$this->constr($source);
        		$fontColor = imagecolorallocate($this->target, $cate1, $cate2, $cate3); //字的RGB颜色
        		$fontBox   = imagettfbbox($fontSize, 0, $font, $text1); //文字水平居中实质
        		imagettftext($this->target, $fontSize, 0, $textwidth, $textherght, $fontColor, $font, $text1);
        		$this->createImg();
        		return $this->img;
	     }
	      /**
	     * [generateImg description]
	     * @param  string  $source        背景图片
	     * @param  string  $codeurl       二维码图片
	     * @param  integer  $sourcewidth  二维码横向所在位置
	     * @param  integer  $sourceheight 二维码高度位置
	     * @param  integer $codewidth    二维码宽度
	     * @param  integer $codeheight   二维码高度
	     * @return [type]                [description]
	     */
	      public function generateImg($source, $codeurl, $sourcewidth, $sourceheight, $codewidth = 100, $codeheight = 100)
	      {
			$this->constr($source);
        			$child1 = imagecreatefrompng($codeurl);
        			$codewidth = $codewidth > 0 ? $codewidth :imagesx($child1);
        			$codeheight = $codeheight > 0 ? $codeheight : imagesy($child1);
        			imagecopyresampled($this->target, $child1, $sourcewidth, $sourceheight, 0, 0, $codewidth, $codeheight,imagesx($child1),imagesy($child1));
        			imagedestroy($child1);
        			$this->createImg();
        			return $this->img;
		}
		function createImg()
		{
			@mkdir('./' . $this->date);
       			 imagejpeg($this->target, './' . $this->img, 95);
        			imagedestroy($this->main);
        			imagedestroy($this->target);
		}
	}
		$source       = "./img/1000.jpg";
		$codeImg = new codeImg($source);
		$website = "http://www.baidu.com";
		$codeurl = "./temp/code.png";
		$codeImg->qrencode($website, $codeurl);
		#################################
		$text         = "开始了开始了hahhah呵呵";
		$textwidth    = 100;
		$textherght   = 50;
		$generateFont = $codeImg->generateFont($source, $text, $textwidth, $textherght);
		##########################################################
		$sourcewidth  = 200;
		$sourceheight = 150;
		$generateImg  = $codeImg->generateImg($generateFont, $codeurl, $sourcewidth, $sourceheight);
		echo "<img  src=&#39;" . $generateImg . "&#39; alt="Teach you to use php to combine QR code and text into a background image!" >";
	
	``		

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