huahuibao/common/components/util.php

<?php

namespace common\components;

use Yii;
use yii\helpers\Json;

class util
{

    //判断是否微信浏览器
    public static function isWx()
    {
        if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') == true) {
            return true;
        }
        return false;
    }

    //根据两点间的经纬度计算距离
    public static function getDistance($lat1, $lng1, $lat2, $lng2)
    {
        $earthRadius = 6367000; //approximate radius of earth in meters

        /*
         Convert these degrees to radians
        to work with the formula
        */

        $lat1 = ($lat1 * pi()) / 180;
        $lng1 = ($lng1 * pi()) / 180;

        $lat2 = ($lat2 * pi()) / 180;
        $lng2 = ($lng2 * pi()) / 180;

        /*
         Using the
        Haversine formula

        http://en.wikipedia.org/wiki/Haversine_formula

        calculate the distance
        */

        $calcLongitude = $lng2 - $lng1;
        $calcLatitude = $lat2 - $lat1;
        $stepOne = pow(sin($calcLatitude / 2), 2) + cos($lat1) * cos($lat2) * pow(sin($calcLongitude / 2), 2);
        $stepTwo = 2 * asin(min(1, sqrt($stepOne)));
        $calculatedDistance = $earthRadius * $stepTwo;

        return round($calculatedDistance);
    }

    /**
     * 生成缩略图
     * @author yangzhiguo0903@163.com
     * @param string     源图绝对完整地址{带文件名及后缀名}
     * @param string     目标图绝对完整地址{带文件名及后缀名}
     * @param int        缩略图宽{0:此时目标高度不能为0，目标宽度为源图宽*(目标高度/源图高)}
     * @param int        缩略图高{0:此时目标宽度不能为0，目标高度为源图高*(目标宽度/源图宽)}
     * @param int        是否裁切{宽,高必须非0}
     * @param int /float  缩放{0:不缩放, 0<this<1:缩放到相应比例(此时宽高限制和裁切均失效)}
     * @return boolean
     */
    public static function img2thumb($src_img, $dst_img, $width = 75, $height = 75, $cut = 0, $proportion = 0)
    {
        if (!is_file($src_img)) {
            return false;
        }
        $ot = pathinfo($dst_img, PATHINFO_EXTENSION);
        $otfunc = 'image' . ($ot == 'jpg' ? 'jpeg' : $ot);
        $srcinfo = getimagesize($src_img);
        $src_w = $srcinfo[0];
        $src_h = $srcinfo[1];
        $type = strtolower(substr(image_type_to_extension($srcinfo[2]), 1));
        $createfun = 'imagecreatefrom' . ($type == 'jpg' ? 'jpeg' : $type);

        $dst_h = $height;
        $dst_w = $width;
        $x = $y = 0;

        /**
         * 缩略图不超过源图尺寸（前提是宽或高只有一个）
         */
        if (($width > $src_w && $height > $src_h) || ($height > $src_h && $width == 0) || ($width > $src_w && $height == 0)) {
            $proportion = 1;
        }
        if ($width > $src_w) {
            $dst_w = $width = $src_w;
        }
        if ($height > $src_h) {
            $dst_h = $height = $src_h;
        }

        if (!$width && !$height && !$proportion) {
            return false;
        }
        if (!$proportion) {
            if ($cut == 0) {
                if ($dst_w && $dst_h) {
                    if ($dst_w / $src_w > $dst_h / $src_h) {
                        $dst_w = $src_w * ($dst_h / $src_h);
                        $x = 0 - ($dst_w - $width) / 2;
                    } else {
                        $dst_h = $src_h * ($dst_w / $src_w);
                        $y = 0 - ($dst_h - $height) / 2;
                    }
                } else if ($dst_w xor $dst_h) {
                    if ($dst_w && !$dst_h)  //有宽无高
                    {
                        $propor = $dst_w / $src_w;
                        $height = $dst_h = $src_h * $propor;
                    } else if (!$dst_w && $dst_h)  //有高无宽
                    {
                        $propor = $dst_h / $src_h;
                        $width = $dst_w = $src_w * $propor;
                    }
                }
            } else {
                if (!$dst_h)  //裁剪时无高
                {
                    $height = $dst_h = $dst_w;
                }
                if (!$dst_w)  //裁剪时无宽
                {
                    $width = $dst_w = $dst_h;
                }
                $propor = min(max($dst_w / $src_w, $dst_h / $src_h), 1);
                $dst_w = (int)round($src_w * $propor);
                $dst_h = (int)round($src_h * $propor);
                $x = ($width - $dst_w) / 2;
                $y = ($height - $dst_h) / 2;
            }
        } else {
            $proportion = min($proportion, 1);
            $height = $dst_h = $src_h * $proportion;
            $width = $dst_w = $src_w * $proportion;
        }

        $src = $createfun($src_img);
        $dst = imagecreatetruecolor($width ? $width : $dst_w, $height ? $height : $dst_h);
        $white = imagecolorallocate($dst, 255, 255, 255);
        imagefill($dst, 0, 0, $white);

        if (function_exists('imagecopyresampled')) {
            imagecopyresampled($dst, $src, $x, $y, 0, 0, $dst_w, $dst_h, $src_w, $src_h);
        } else {
            imagecopyresized($dst, $src, $x, $y, 0, 0, $dst_w, $dst_h, $src_w, $src_h);
        }
        $otfunc($dst, $dst_img);
        imagedestroy($dst);
        imagedestroy($src);
        //return true;
        return ['width' => $src_w, 'height' => $src_h];//modify sofashi
    }

    /**
     * 输出字符并结束运行
     */
    public static function stop($string = '')
    {
        echo $string;
        Yii::$app->end();
    }

    public static function end()
    {
        Yii::$app->end();
    }

	//输出json数据并结束运行
    public static function encode($data)
    {
        echo Json::encode($data);
        exit();
    }

    /**
     * 合并图片 ---lqh 2017-05-05
     * @param $background_img  背景原图
     * @param $inline_img  内嵌原图
     * @return mixed  合并图的路径名称
     */
    public static function mergeImg($background_img, $inline_img, $type = 'wx')
    {
        $app = Yii::getAlias("@app");
        $saveDir = $app . '/../images/qrcode/';
        $rand = stringUtil::buildOrderNo();
        $random = empty($unique) ? $rand : $unique . '_' . $rand;
        //背景框图
        $path_1 = $background_img;
        //二维码图片
        $path_2 = $inline_img;

        //将框和二维码图片分别取到两个画布中。 针对png格式
        $image_1 = imagecreatefrompng($path_1);
        $image_2 = imagecreatefrompng($path_2);
        //创建一个和框图片一样大小的真彩色画布（ps：只有这样才能保证后面copy二维码图片的时候不会失真）
        $image_3 = imageCreatetruecolor(imagesx($image_1), imagesy($image_1));
        //为真彩色画布创建白色背景，再设置为透明
        $color = imagecolorallocate($image_3, 255, 255, 255);
        imagefill($image_3, 0, 0, $color);
        imageColorTransparent($image_3, $color);
        //首先将框画布采样copy到真彩色画布中，不会失真
        imagecopyresampled($image_3, $image_1, 0, 0, 0, 0, imagesx($image_1), imagesy($image_1), imagesx($image_1), imagesy($image_1));
        //再将二维码图片copy到已经具有框图像的真彩色画布中，同样也不会失真
        //根据微信或则支付宝合并位置有所不同
        if ($type == 'wx') {
            imagecopymerge($image_3, $image_2, 220, 320, 0, 0, imagesx($image_2), imagesy($image_2), 100);
        } else {
            //支付宝
            imagecopymerge($image_3, $image_2, 450, 820, 0, 0, imagesx($image_2), imagesy($image_2), 100);
        }

        //将画布保存到指定的png文件
        imagepng($image_3, $saveDir . $random . '_merge.png');
        return '/qrcode/' . $random . '_merge.png';//组合图片
    }

    public static function mergeQrimg($backgroundImg, array $qrImg)
    {
        $app = Yii::getAlias("@app");
        $saveDir = $app . '/../images/qrcode/';
        $random = stringUtil::buildOrderNo();

        $dest = imagecreatefromjpeg($backgroundImg);

        // Get new sizes
        list($width, $height) = getimagesize($qrImg['wifi']);
        list($newwidth, $newheight) = getimagesize($qrImg['zhifubao']);
        $newwidth = $newwidth + 35;//下载的wifi二维码size太小,放大些
        $newheight = $newheight + 35;

        // Load
        $thumb = imagecreatetruecolor($newwidth, $newheight);
        $source = imagecreatefromjpeg($qrImg['wifi']);

        // Resize
        imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
        imagejpeg($thumb, $saveDir . "temp.jpeg");//Output image to file

        //微信（支付宝）二维码、WiFi二维码
        $zfbQrImg = imagecreatefrompng($qrImg['zhifubao']);
        $WXQrImg = imagecreatefrompng($qrImg['weixin']);
        $wifiQrImg = imagecreatefromjpeg($saveDir . "temp.jpeg");

        imagealphablending($dest, false);
        imagesavealpha($dest, true);
        imagecopymerge($dest, $zfbQrImg, 240, 538, 0, 0, imagesx($zfbQrImg), imagesy($zfbQrImg), 100);
        imagecopymerge($dest, $WXQrImg, 985, 538, 0, 0, imagesx($WXQrImg), imagesy($WXQrImg), 100);
        imagecopymerge($dest, $wifiQrImg, 1708, 520, 0, 0, imagesx($wifiQrImg), imagesy($wifiQrImg), 100);

        imagepng($dest, $saveDir . $random . '_fullQrImg.png');
        imagedestroy($dest);
        imagedestroy($zfbQrImg);
        imagedestroy($WXQrImg);
        imagedestroy($wifiQrImg);

        return '/qrcode/' . $random . '_fullQrImg.png';//组合图片
    }

    //获取服务器IP
    public static function serverIp()
    {
        if (isset($_SERVER)) {
            if ($_SERVER['SERVER_ADDR']) {
                $server_ip = $_SERVER['SERVER_ADDR'];
            } else {
                $server_ip = $_SERVER['LOCAL_ADDR'];
            }
        } else {
            $server_ip = getenv('SERVER_ADDR');
        }
        return $server_ip;
    }

    //获取根目录 shish 2020.3.11
    public static function getRootDir()
    {
        $basePath = Yii::$app->basePath;
        if (Yii::$app->id == 'app-console') {
            $root = $basePath . "/../";
        } else {
            $root = $basePath . "/../../";
        }
        return $root;
    }

    //错误输出
    public static function fail($msg = '操作失败')
    {
        Yii::info($msg);
        self::encode(['code' => 0, 'msg' => $msg, 'data' => []]);
    }

    //成功输出内容
    public static function success($data, $msg = '操作成功')
    {
        self::encode(['code' => 1, 'msg' => $msg, 'data' => $data]);
    }

    //退出当前登陆 shish 2020.3.8
    public static function logout()
    {
        self::encode(['code' => 2, 'msg' => '当前登陆信息已失效，请重新登陆', 'data' => []]);
    }

    //只输出执行完成状态 shish 2020.3.11
    public static function complete($msg = '')
    {
        $msg = empty($msg) ? '操作成功' : $msg;
        self::encode(['code' => 1, 'msg' => $msg, 'data' => []]);
    }

    public static function notLogin($msg = '没有登陆')
    {
        self::encode(['code' => -1, 'msg' => $msg, 'data' => []]);
    }

}