php生成圆角图片的方法
本文实例讲述了php生成圆角图片的方法。分享给大家供大家参考。具体如下：
<?php
$image_file=$_GET['src'];
$corner_radius=isset($_GET['radius'])?$_GET['radius']:20;//Thedefaultcornerradiusissetto20px
$topleft=(isset($_GET['topleft'])and$_GET['topleft']=="no")?false:true;//Top-leftroundedcornerisshownbydefault
$bottomleft=(isset($_GET['bottomleft'])and$_GET['bottomleft']=="no")?false:true;//Bottom-leftroundedcornerisshownbydefault
$bottomright=(isset($_GET['bottomright'])and$_GET['bottomright']=="no")?false:true;//Bottom-rightroundedcornerisshownbydefault
$topright=(isset($_GET['topright'])and$_GET['topright']=="no")?false:true;//Top-rightroundedcornerisshownbydefault
$imagetype=strtolower($_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-leftcorner
$background=imagecreatetruecolor($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,$bg);
}
//Bottom-leftcorner
if($bottomleft==true){
imagearc($im_temp,$startsize,$starty-$startsize,$arcsize,$arcsize,90,180,$bg);
imagefilltoborder($im_temp,0,$starty,$bg,$bg);
}
//Bottom-rightcorner
if($bottomright==true){
imagearc($im_temp,$startx-$startsize,$starty-$startsize,$arcsize,$arcsize,0,90,$bg);
imagefilltoborder($im_temp,$startx,$starty,$bg,$bg);
}
//Top-rightcorner
if($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,$starty);
//Outputfinalimage
header("Content-type:image/png");
imagepng($image);
imagedestroy($image);
imagedestroy($background);
imagedestroy($im_temp);
?>
希望本文所述对大家的php程序设计有所帮助。