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具體如下：

代碼如下:

<?php

$image_file = $_GET['src'];

$corner_radius = isset($_GET['radius']) ? $_GET['radius'] : 20; // The default corner radius is set to 20px

$topleft = (isset($_GET['topleft']) and $_GET['topleft'] == "no") ? false : true; // Top-left rounded corner is shown by default

$bottomleft = (isset($_GET['bottomleft']) and $_GET['bottomleft'] == "no") ? false : true; // Bottom-left rounded corner is shown by default

$bottomright = (isset($_GET['bottomright']) and $_GET['bottomright'] == "no") ? false : true; // Bottom-right rounded corner is shown by default

$topright = (isset($_GET['topright']) and $_GET['topright'] == "no") ? false : true; // Top-right rounded corner is shown by default

$imagetype=strtolower($_GET['imagetype']);

$backcolor=$_GET['backcolor'];

$endsize=$corner_radius;

$startsize=$endsize*3-1;

$arcsize=$startsize*2+1;

if (($imagetype=='jpeg') or ($imagetype=='jpg')) {

$image = imagecreatefromjpeg($image_file);

} else {

if (($imagetype=='GIF') or ($imagetype=='gif')) {

$image = imagecreatefromgif($image_file);

} else {

$image = imagecreatefrompng($image_file);

}

}

$size = getimagesize($image_file);

// Top-left corner

$background = imagecreatetruecolor($size[0],$size[1]);

imagecopymerge($background,$image,0,0,0,0,$size[0],$size[1],100);

$startx=$size[0]*2-1;

$starty=$size[1]*2-1;

$im_temp = imagecreatetruecolor($startx,$starty);

imagecopyresampled($im_temp, $background, 0, 0, 0, 0, $startx, $starty, $size[0], $size[1]);

$bg = imagecolorallocate($im_temp, hexdec(substr($backcolor,0,2)),hexdec(substr($backcolor,2,2)),hexdec(substr($backcolor,4,2)));

$fg = imagecolorallocate($im_temp, hexdec(substr($forecolor,0,2)),hexdec(substr($forecolor,2,2)),hexdec(substr($forecolor,4,2)));

if ($topleft == true) {

imagearc($im_temp, $startsize, $startsize, $arcsize, $arcsize, 180,270,$bg);

imagefilltoborder($im_temp,0,0,$bg,$bg);

}

// Bottom-left corner

if ($bottomleft == true) {

imagearc($im_temp,$startsize,$starty-$startsize,$arcsize,$arcsize,90,180,$bg);

imagefilltoborder($im_temp,0,$starty,$bg,$bg);

}

// Bottom-right corner

if ($bottomright == true) {

imagearc($im_temp, $startx-$startsize, $starty-$startsize,$arcsize, $arcsize, 0,90,$bg);

imagefilltoborder($im_temp,$startx,$starty,$bg,$bg);

}

// Top-right corner

if ($topright == true) {

imagearc($im_temp, $startx-$startsize, $startsize,$arcsize, $arcsize, 270,360,$bg);

imagefilltoborder($im_temp,$startx,0,$bg,$bg);

}

$newimage = imagecreatetruecolor($size[0],$size[1]);

imagecopyresampled($image,$im_temp,0,0,0,0,$size[0],$size[1],$startx,$starty);

// Output final image

header("Content-type: image/png");

imagepng($image);

imagedestroy($image);

imagedestroy($background);

imagedestroy($im_temp);

?>

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