function createRoundImg($imgpath,$circle_path) {//$imgpath原图片路径,$circle_path完成后图片存储路径
$ext = pathinfo($imgpath);
$src_img = null;
switch ($ext['extension']) {
case 'jpg':
$src_img = imagecreatefromjpeg($imgpath);
break;
case 'png':
$src_img = imagecreatefrompng($imgpath);
break;
}
$wh = getimagesize($imgpath);
$w = $wh[0];
$h = $wh[1];
$w = $h = min($w, $h);
$image = imagecreatetruecolor($w, $h);
$bg = imagecolorallocatealpha($image, 255, 255, 255, 127);
imagesavealpha($image, true);
imagefill($image, 0, 0, $bg);
$r = $w / 2;
for ($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*$r))) {
imagesetpixel($image, $x, $y, $rgbColor);
}
}
}
header("content-type:image/png");
imagepng($image,$circle_path);
return $circle_path;
}
修改图片为圆形
猜你喜欢
转载自blog.csdn.net/qq_39015933/article/details/84561558
今日推荐
周排行