<?php
// 获取图片宽度、高度和类型
$img='abc.jpeg';
print_r(getImageInfo($img));
echo '<br/>';
function getImageInfo($img){
$info= getimagesize($img);
$imageinfo=pathinfo($img);
$getImageInfo=array(
'width' =>$info[0],
'height'=>$info[1],
'type'=>$imageinfo['extension'],
);
return $getImageInfo;
}
water('abc.jpeg','du.png');
function water($img,$water,$pos=9,$tm=100){
$info=getImageInfo($img);
$logo=getImageInfo($water);
$dst=openImg($img,$info['type']);
$src=openImg($water,$logo['type']);
switch($pos){
case 1:
$x=0;
$y=0;
break;
case 2:
$x=ceil(($info['width']-$logo['width'])/2);
$y=0;
break;
case 3:
$x=$info['width']-$logo['width'];
$y=0;
break;
case 4:
$x=0;
$y=ceil(($info['height']-$logo['height'])/2);
break;
case 5:
$x=ceil(($info['width']-$logo['width'])/2);
$y=ceil(($info['height']-$logo['height'])/2);
break;
case 6:
$x=$info['width']-$logo['width'];
$y=ceil(($info['height']-$logo['height'])/2);
break;
case 7:
$x=0;
$y=$info['height']-$logo['height'];
break;
case 8:
$x=ceil(($info['width']-$logo['width'])/2);
$y=$info['height']-$logo['height'];
break;
case 9:
$x=$info['width']-$logo['width'];
$y=$info['height']-$logo['height'];
break;
case 0:
default:
$x=mt_rand(0,$info['width']-$logo['width']);
$y=mt_rand(0,$y=$info['height']-$logo['height']);
break;
}
imagecopymerge($dst,$src,$x,$y,0,0,$logo['width'],$logo['height'],$tm);
header ('Content-Type:image/jpeg');
imagejpeg($dst);
imagedestory($dst);
imagedestory($src);
}
function openImg($path,$type){
switch($type){
case 'jpeg':
case 'jpg':
case 'pjpeg':
$img=imagecreatefromjpeg($path);
break;
case 'png':
case 'x-png':
$img=imagecreatefrompng($path);
break;
case 'gif':
$img=imagecreatefromgif($path);
break;
case 'wbmp':
$img=imagecreatefromwbmp($path);
break;
default:
exit('图片类型不支持');
}
return $img;
}
?>
#
如果图片直接改后缀名,会导致这种情况,可通过PS修改后缀名,希望回答有所帮助。
//获取图片宽度、高度和类型
// $img='time.jpg';
// print_r(getImageInfo($img ));
// echo '
';
function getImageInfo($img){
$info= getimagesize($img);
$imageinfo=pathinfo($img);
$getImageInfo=array(
'width' =>$info[0],
'' height'=>$info[1],
'type'=>$imageinfo['extension'],
);
return $getImageInfo;
}
water('photo.jpeg','watermark.png');
函数水($img,$water,$pos=9,$tm= 100){
$info=getImageInfo($img);
$logo=getImageInfo($water);
$dst=openImg($img,$info[ 'type']);
$src=openImg($water,$logo['type']);
switch($pos){
情况 1:
$x=0;
$y=0;
break;
情况 2:
$x=ceil( ($info['width']-$logo['width'])/2);
$y=0;
break;
情况 3:
$x=$info['width']-$logo['width'];
$y=0;
break;
case 4:
$x=0;
$y=ceil(($info['height']-$logo['height'])/2);
break;
情况 5:
$x=ceil(($info['width']-$logo['width'])/2);
$y=ceil(($info['height']-$logo['height'])/2);
break;
情况 6:
$ x=$info['width']-$logo['width'];
$y=ceil(($info['height']-$logo['height'])/2);
中断;
情况 7:
$x=0;
$y=$info['height']-$logo['height '];
break;
情况 8:
$x=ceil(($info['width']-$logo['width'])/2 );
$y=$info['height']-$logo['height'];
中断;
情况 9:
$x=$info['width']-$logo['width'];
$y=$info['height ']-$logo['height'];
Break;
case 0:
默认值:
$x=mt_rand(0,$ info['width']-$logo['width']);
$y=mt_rand(0,$y=$info['height']-$logo['height']);
中断;
}
imagecopymerge($dst,$src,$x,$y,0,0,$logo['宽度'],$logo[' height'],$tm);
header ('Content-Type:image/jpeg');
imagejpeg($dst);
imagedestory($dst) ;
imagedestory($src);
}
function openImg($path,$type){
switch($type){
case 'jpeg':
case 'jpg':
case 'pjpeg':
$img=imagecreatefromjpeg($path);
break;
case 'png':
case 'x-png':
$img=imagecreatefrompng($path);
break ;
case 'gif':
$img=imagecreatefromgif($path);
break;
case 'wbmp':
$img=imagecreatefromwbmp($path);
break;
默认:
exit('图片类型不支持');
}
return $img;
}
?>
另外课程上的方法(亲测可用),不同的getImageInfo函数。
<?php
header("内容类型:text/html;charset=utf-8");
water('photo.jpeg','watermark.jpeg');
function getImageInfo($path) {
$info = getimagesize($path);
$data['width'] = $info[0];
$data['height'] = $info[1];
$data['type'] = $info['mime'];
return $data;
}
function openImg($path,$type){
switch($type){
case 'image/jpeg':
case 'image/jpg':
case 'image/pjpeg':
$img=imagecreatefromjpeg($path);
break;
case 'image/png':
case 'image/x-png':
$img =imagecreatefrompng($path);
break;
case 'image/gif':
$img=imagecreatefromgif($path);
break;
case 'image/wbmp':
$img=imagecreatefromwbmp($path);
break;
默认:
exit('图片类型不支持');
}
return $img;
}
//$water = 'watermark.jpeg';
#function water($img,$water,$pos=9,$tm=100){
$info=getImageInfo($img) ;
$logo=getImageInfo($water);
$dst=openImg($img,$info['type']);
$src=openImg($water,$logo['type') ]);
switch($pos){
情况 1:
$x=0;
$y=0;
打破;
情况 2:
$x =ceil(($info['width']-$logo['width'])/2);
$y=0;
break;
情况 3:
$x=$ info['width']-$logo['width'];
$y=0;
break;
案例 4:
$x=0;
$y=ceil( ($info['height']-$logo['height'])/2);
break;
情况 5:
$x=ceil(($info['width']-$logo['width'])/2);
$y=ceil(($info['height']-$logo['height'] )/2);
break;
情况 6:
$x=$info['width']-$logo['width'];
$y=ceil(($info[ 'height']-$logo['height'])/2);
Break;
情况 7:
$x=0;
$y=$info['height']- $logo['height'];
break;
case 8:
$x=ceil(($info['width']-$logo['width'])/2);
$y=$info['height']-$logo['height'];
break;
案例 9:
$x=$info['width']-$logo['width '];
$y=$info['height']-$logo['height'];
break;
case 0:
默认值:
$x=mt_rand(0 ,$info['width']-$logo['width']);
$y=mt_rand(0,$y=$info['height']-$logo['height']);
break;
}
imagecopymerge($dst,$src,$x,$y,0,0,$logo['width'],$logo['height'],$tm);
header ('Content-Type:image/jpeg');
imagejpeg($dst);
imagedestory($dst);
imagedestory($src);
}
?> ;