php 两站图生成海报

生成带二维码的图片可以使用以下代码：

$config = array(
    'image' => array(
        array(
            'url' => 'qrcode/qrcode.png', //二维码资源
            'stream' => 0,
            'left' => 116,
            'top' => -216,
            'right' => 0,
            'bottom' => 0,
            'width' => 178,
            'height' => 178,
            'opacity' => 100
        )
    ),
    'background' => 'bg/bg1.jpg' //背景图
);
$filename = 'bg/' . time() . '.jpg';
echo createPoster($config, $filename);

缩小图片可以使用以下代码：

public function thumbImage($filename, $newFileName, $n_w = 160, $n_h = 160)
{
    list($width, $height) = getimagesize($filename);
    //缩放比例
    if ($width > $n_w) {
        $new = imagecreatetruecolor($n_w, $n_h);
        $img = imagecreatefromjpeg($filename);
        //copy部分图像并调整
        imagecopyresized($new, $img, 0, 0, 0, 0, $n_w, $n_h, $width, $height);
        //图像输出新图片、另存为
        imagejpeg($new, $newFileName);
        imagedestroy($new);
        imagedestroy($img);
        return array('width' => $n_w, 'height' => $n_h);
    } else {
        return array('width' => $width, 'height' => $height);
    }
}

生成海报可以使用以下代码：

$bigType = 2;
if ($this->newImage) {
    imagejpeg($bigImg, $this->newImage);
} else {
    switch ($bigType) {
        case 2: //jpg
            header('Content-Type:image/jpg');
            imagejpeg($bigImg);
            break;
        default:
            # code...
            break;
    }
}

以上代码可以用于在PHP中生成带二维码的海报。
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