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PHPqrCode class library for generating QR codes

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PHPqrCode class library for generating QR codes

/**
 * 生成二维码
 * @param  string  $url  url连接
 * @param  integer $size 尺寸 纯数字
 */
function qrcode($url,$size=4){
    Vendor('Phpqrcode.phpqrcode');
    // 如果没有http 则添加
    if (strpos($url, 'http')===false) {
        $url='http://'.$url;
    }
    QRcode::png($url,false,QR_ECLEVEL_L,$size,2,false,0xFFFFFF,0x000000);
}

The first parameter $text; is the URL parameter in the above code;
The second parameter $outfile defaults to No; no file is generated; only the QR code image is returned; otherwise storage needs to be provided Path to generate QR code images;
The third parameter $level defaults to L; the values that can be passed by this parameter are L(QR_ECLEVEL_L, 7%), M(QR_ECLEVEL_M, 15%), Q(QR_ECLEVEL_Q, 25 %), H(QR_ECLEVEL_H, 30%); this parameter controls the error tolerance rate of the QR code; different parameters indicate the percentage of the area that the QR code can cover. Taking advantage of the fault tolerance rate of QR code; we can place the avatar in any area of the generated QR code image;
The fourth parameter $size; controls the size of the generated image; the default is 4;
The fifth Parameter $margin; controls the size of the blank area for generating QR codes;
The sixth parameter $saveandprint; saves the QR code image and displays it; $outfile must pass the image path;
The seventh parameter $back_color; Background color;
The eighth parameter $fore_color; the color of drawing QR code;

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