Nothing 2008-4-27 19:30
PHP图片水印
[color=#000000][color=#0000cc]<[/color][color=#0000cc]?[/color][color=#0000ff]php[/color]
[color=#0000ff]$[/color][color=#008080]uptypes[/color][color=#0000cc]=[/color][color=#ff0000]array[/color][color=#0000cc]([/color][color=#ff00ff]'image/jpg'[/color][color=#0000cc],[/color][color=#ff00ff]'image/jpeg'[/color][color=#0000cc],[/color][color=#ff00ff]'image/pjpeg'[/color][color=#0000cc],[/color][color=#ff00ff]'image/gif'[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//上传图片文件类型列表
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[color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc]=[/color][color=#ff00ff]"a.jpg"[/color][color=#0000cc];[/color][color=#ff9900]//取得文件路径
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[color=#0000ff]$[/color][color=#008080]waterimg[/color][color=#0000cc]=[/color][color=#ff00ff]"hq.gif"[/color][color=#0000cc];[/color][color=#ff9900]//水印图片路径
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[color=#0000ff]if[/color][color=#0000cc]([/color][color=#ff0000]in_array[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc][[/color][color=#ff00ff]'type'[/color][color=#0000cc]][/color][color=#0000cc],[/color] [color=#0000ff]$[/color][color=#008080]uptypes[/color][color=#0000cc])[/color][color=#0000cc])[/color]
[color=#0000cc]{[/color][color=#ff9900]//检查文件类型，若上传的文件为jpg或gif图片则加水印
[/color]
[color=#0000ff]if[/color][color=#0000cc]([/color][color=#ff0000]strstr[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc][[/color][color=#ff00ff]'type'[/color][color=#0000cc]][/color][color=#0000cc],[/color][color=#ff00ff]"jp"[/color][color=#0000cc])[/color][color=#0000cc])[/color][color=#0000cc]{[/color] [color=#ff9900]//若上传图片类型为jpg,pjpeg,jpeg，则用imagecreatefromjpeg读取目标文件
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[color=#0000ff]$[/color][color=#008080]im[/color] [color=#0000cc]=[/color] [color=#ff0000]imageCreatefromjpeg[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#0000ff]$[/color][color=#008080]wfilew[/color][color=#0000cc]=[/color][color=#ff0000]imagesx[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//取得图片的宽
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[color=#0000ff]$[/color][color=#008080]wfileh[/color][color=#0000cc]=[/color][color=#ff0000]imagesy[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//取得图片的高
[/color]
[color=#0000cc]}[/color][color=#0000ff]else[/color][color=#0000cc]{[/color][color=#ff9900]//否则若上传图片类型为gif，则用imagecreatefromgif读取目标文件
[/color]
[color=#0000ff]$[/color][color=#008080]im[/color] [color=#0000cc]=[/color] [color=#ff0000]imageCreatefromgif[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#0000ff]$[/color][color=#008080]wfilew[/color][color=#0000cc]=[/color][color=#ff0000]imagesx[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//取得图片的宽
[/color]
[color=#0000ff]$[/color][color=#008080]wfileh[/color][color=#0000cc]=[/color][color=#ff0000]imagesy[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//取得图片的高
[/color]
[color=#0000cc]}[/color]
[color=#ff9900]//设定混合模式
[/color]
[color=#ff0000]imagealphablending[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc],[/color] [color=#0000ff]true[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#ff9900]//读取水印文件
[/color]
[color=#0000ff]$[/color][color=#008080]im2[/color] [color=#0000cc]=[/color] [color=#ff0000]imagecreatefromgif[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]waterimg[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//若水印图片为jpg，则此去可改为$im2 = imagecreatefromjpeg($waterimg)
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[color=#0000ff]$[/color][color=#008080]waterw[/color][color=#0000cc]=[/color][color=#ff0000]imagesx[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im2[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//取得水印图片的宽
[/color]
[color=#0000ff]$[/color][color=#008080]waterh[/color][color=#0000cc]=[/color][color=#ff0000]imagesy[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im2[/color][color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//取得水印图片的高
[/color]
[color=#ff9900]//随机放水印到图片中
[/color]
[color=#0000ff]$[/color][color=#008080]randval[/color] [color=#0000cc]=[/color] [color=#ff0000]rand[/color][color=#0000cc]([/color]0[color=#0000cc],[/color]9[color=#0000cc])[/color][color=#0000cc];[/color][color=#ff9900]//在0-9之间产生随机数
[/color]
[color=#0000ff]if[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]randval[/color][color=#0000cc]=[/color][color=#0000cc]=[/color]0[color=#0000cc]|[/color][color=#0000cc]|[/color][color=#0000ff]$[/color][color=#008080]randval[/color][color=#0000cc]=[/color][color=#0000cc]=[/color]3[color=#0000cc]|[/color][color=#0000cc]|[/color][color=#0000ff]$[/color][color=#008080]randval[/color][color=#0000cc]=[/color][color=#0000cc]=[/color]2[color=#0000cc]|[/color][color=#0000cc]|[/color][color=#0000ff]$[/color][color=#008080]randval[/color][color=#0000cc]=[/color][color=#0000cc]=[/color]8[color=#0000cc]|[/color][color=#0000cc]|[/color][color=#0000ff]$[/color][color=#008080]randval[/color][color=#0000cc]=[/color][color=#0000cc]=[/color]7[color=#0000cc])[/color][color=#0000cc]{[/color][color=#ff9900]//此处还可完善放更多位置
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[color=#0000ff]$[/color][color=#008080]wimgx[/color][color=#0000cc]=[/color]5[color=#0000cc];[/color][color=#0000ff]$[/color][color=#008080]wimgy[/color][color=#0000cc]=[/color]5[color=#0000cc];[/color][color=#ff9900]//放左上角
[/color]
[color=#0000cc]}[/color][color=#0000ff]else[/color][color=#0000cc]{[/color]
[color=#0000ff]$[/color][color=#008080]wimgx[/color][color=#0000cc]=[/color][color=#0000ff]$[/color][color=#008080]wfilew[/color][color=#0000cc]-[/color]5[color=#0000cc]-[/color][color=#0000ff]$[/color][color=#008080]waterw[/color][color=#0000cc];[/color][color=#0000ff]$[/color][color=#008080]wimgy[/color][color=#0000cc]=[/color][color=#0000ff]$[/color][color=#008080]wfileh[/color][color=#0000cc]-[/color]5[color=#0000cc]-[/color][color=#0000ff]$[/color][color=#008080]waterh[/color][color=#0000cc];[/color][color=#ff9900]//放右上角
[/color]
[color=#0000cc]}[/color]
[color=#ff9900]//拷贝水印到目标文件
[/color]
[color=#ff0000]imagecopy[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc],[/color] [color=#0000ff]$[/color][color=#008080]im2[/color][color=#0000cc],[/color] [color=#0000ff]$[/color][color=#008080]wimgx[/color][color=#0000cc],[/color] [color=#0000ff]$[/color][color=#008080]wimgy[/color][color=#0000cc],[/color] 0[color=#0000cc],[/color] 0[color=#0000cc],[/color] [color=#0000ff]$[/color][color=#008080]waterw[/color][color=#0000cc],[/color][color=#0000ff]$[/color][color=#008080]waterh[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#ff9900]//输出图片
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[color=#0000ff]if[/color][color=#0000cc]([/color][color=#ff0000]strstr[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc][[/color][color=#ff00ff]'type'[/color][color=#0000cc]][/color][color=#0000cc],[/color][color=#ff00ff]"jp"[/color][color=#0000cc])[/color][color=#0000cc])[/color][color=#0000cc]{[/color] [color=#ff9900]//同上
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[color=#ff0000]imagejpeg[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc],[/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#0000cc]}[/color][color=#0000ff]else[/color][color=#0000cc]{[/color]
[color=#ff0000]imagegif[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc],[/color][color=#0000ff]$[/color][color=#008080]wFile[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#0000cc]}[/color]
[color=#ff0000]imagedestroy[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#ff0000]imagedestroy[/color][color=#0000cc]([/color][color=#0000ff]$[/color][color=#008080]im2[/color][color=#0000cc])[/color][color=#0000cc];[/color]
[color=#0000cc]}[/color]
[color=#ff9900]/************************************************************
**********水印结束*******************************************
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