将二维码生成到背景图片上，并且文字生成到背景图上，可以无限制扩增
1.生成前的图片
生成后的图片
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='" . $generateImg . "'>";``更多相关知识，请访问PHP中文网！
