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php图片圆角效果代码

作者：zhirong1230 创建时间：2018-03-19 阅读次数：1478

<?php
class RoundedCorner{
    private $_r;
    private $_g;
    private $_b;
    private $_image_path;
    private $_radius;
    function __construct($image_path, $radius, $r = 255, $g = 0, $b = 0) {
        $this->_image_path = $image_path;
        $this->_radius = $radius;
        $this->_r = (int)$r;
        $this->_g = (int)$g;
        $this->_b = (int)$b;
    }
    private function _get_lt_rounder_corner() {
        $radius = $this->_radius;
        $img = imagecreatetruecolor($radius, $radius);
        $bgcolor = imagecolorallocate($img, $this->_r, $this->_g, $this->_b);
        $fgcolor = imagecolorallocate($img, 0, 0, 0);
        imagefill($img, 0, 0, $bgcolor);
        imagefilledarc($img, $radius, $radius, $radius*2, $radius*2, 180, 270, $fgcolor, IMG_ARC_PIE);
        imagecolortransparent($img, $fgcolor);
        return $img;
    }
    private function _load_source_image() {
        $ext = substr($this->_image_path, strrpos($this->_image_path, '.'));
        if (empty($ext)) {
            return false;
        }
        switch(strtolower($ext)) {
            case '.jpg':
                $img = @imagecreatefromjpeg($this->_image_path);
                break;
            case '.gif':
                $img = @imagecreatefromgif($this->_image_path);
                break;
            case '.png':
                $img = @imagecreatefrompng($this->_image_path);
                break;
            default:
                return false;
        }
        return $img;
    }
    public function round_it() {
        // load the source image
        $src_image = $this->_load_source_image();
        if ($src_image === false) {
            die("Sorry, can't load the image");
 }
 $image_width = imagesx($src_image);
 $image_height = imagesy($src_image);
 // create a new image, with src_width, src_height, and fill it with transparent color
 $image = imagecreatetruecolor($image_width, $image_height);
 $trans_color = imagecolorallocate($image, $this->_r, $this->_g, $this->_b);
 imagefill($image, 0, 0, $trans_color);
 // then overwirte the source image to the new created image
 imagecopymerge($image, $src_image, 0, 0, 0, 0, $image_width, $image_height, 100);
 // then just copy all the rounded corner images to the 4 corners
 $radius = $this->_radius;
 // lt
 $lt_corner = $this->_get_lt_rounder_corner();
 imagecopymerge($image, $lt_corner, 0, 0, 0, 0, $radius, $radius, 100);
 // lb
 $lb_corner = imagerotate($lt_corner, 90, $trans_color);
 imagecopymerge($image, $lb_corner, 0, $image_height - $radius, 0, 0, $radius, $radius, 100);
 // rb
 $rb_corner = imagerotate($lt_corner, 180, $trans_color);
 imagecopymerge($image, $rb_corner, $image_width - $radius, $image_height - $radius, 0, 0, $radius, $radius, 100);
 // rt
 $rt_corner = imagerotate($lt_corner, 270, $trans_color);
 imagecopymerge($image, $rt_corner, $image_width - $radius, 0, 0, 0, $radius, $radius, 100);
 // set the transparency
 imagecolortransparent($image, $trans_color);
 // display it
 //header('Content-Type: image/png');
 //imagepng($image,'./images/her.png');


        header('Content-Type: image/jpeg');
        //imagejpeg($image,'./images/111.jpg',100);
        imagepng($image,'./images/111.png');
 //imagedestroy($src_image'./images/her.jpg');
 imagedestroy($image);
 imagedestroy($lt_corner);
 imagedestroy($lb_corner);
 imagedestroy($rb_corner);
 imagedestroy($rt_corner);
 }
}
$rounder = new RoundedCorner('./images/m_5a9974e640028.jpg',30);
$rounder->round_it();
echo "1230";
?>