/**
* 生成二维码
* @param string $string 生成二维码的数据
* @param string $errorCorrentionLevel 容错级别 默认L L|M|Q|H
* @param int $matrixPointSize 二维码大小 默认4
* @param int $margin 旁白大小 默认2
* @param string $logo logo图片路径
*/
public static function QRCode($string, $logo = NULL, $errorCorrectionLevel = 'L', $matrixPointSize = 4, $margin = 2)
{
$path = ROOT . '/extends/phpqrcode/phpqrcode.php';
if (file_exists($path)) {
include_once $path;
}
$filename = ROOT . '/application/download/' . md5($string) . '.png';
\QRcode::png($string, $filename, $errorCorrectionLevel, $matrixPointSize, $margin);
if (!empty($logo) && filesystem::path($logo) && filesystem::path($filename)) {
$QR = imagecreatefromstring(file_get_contents($filename));
$logo = imagecreatefromstring(file_get_contents($logo));
$QR_width = imagesx($filename);
//二维码图片宽度
$QR_height = imagesy($filename);
//二维码图片高度
$logo_width = imagesx($logo);
//logo图片宽度
$logo_height = imagesy($logo);
//logo图片高度
$logo_qr_width = $QR_width / 5;
$scale = $logo_width / $logo_qr_width;
$logo_qr_height = $logo_height / $scale;
$from_width = ($QR_width - $logo_qr_width) / 2;
//重新组合图片并调整大小
imagecopyresampled($filename, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
}
return $filename;
}
/**
* 写入缓存
*
* @param unknown $url
* @param unknown $content
* @return int
*/
public function write($url, $content)
{
$md5 = md5($url);
$file = filesystem::path($this->_config['path'] . '/' . $md5 . '.' . $this->_config['suffix']);
return file_put_contents($file, $content);
}
