TongbuOrder/app/Handlers/ImageDealHandler.php

<?php

namespace App\Handlers;

//use Image;

class ImageDealHandler
{
//    protected $allowed_ext = ["mp3", "wma", "wav",'flac'];

    // 裁剪成圆形图片
    public function circleImg($imgpath)
    {
        // var_dump(getimagesize($imgpath));exit();
        // header("content-type:image/png");
        $ext     = pathinfo($imgpath);
        $src_img = null;
        switch ($ext['extension']) {
            case 'jpeg':
                $src_img = imagecreatefromjpeg($imgpath);
                break;
            case 'jpg':
                $src_img = imagecreatefromjpeg($imgpath);
                break;
            case 'png':
                $src_img = imagecreatefrompng($imgpath);
                break;
        }
        $wh  = @getimagesize($imgpath);
        $w   = $wh[0];
        $h   = $wh[1];
        $w   = min($w, $h);
        $h   = $w;
        $img = imagecreatetruecolor($w, $h);
        imagesavealpha($img, true);
        //拾取一个完全透明的颜色,最后一个参数127为全透明
        $bg = imagecolorallocatealpha($img, 255, 255, 255, 127);
        imagefill($img, 0, 0, $bg);
        $r   = $w / 2; //圆半径
        $y_x = $r; //圆心X坐标
        $y_y = $r; //圆心Y坐标
        for ($x = 0; $x < $w; $x++) {
            for ($y = 0; $y < $h; $y++) {
                $rgbColor = imagecolorat($src_img, $x, $y);
                if (((($x - $r) * ($x - $r) + ($y - $r) * ($y - $r)) < ($r * $r))) {
                    imagesetpixel($img, $x, $y, $rgbColor);
                }
            }
        }
//        imagepng($img, $imgpath);
//         imagejpeg($img, $imgpath);
//        imagedestroy($img);
        return $img;
    }

}