PHP中上传图片到服务器中程序代码
本文章来给大家介绍PHP中上传图片到服务器中程序代码,本程序不但可以上传图片,同时还可以把上传的图片加上水印效果,代码如下:
<meta http-equiv= "Content-Type" content= "text/html; charset=utf-8" /> <?php /****************************************************************************** 参数说明: $max_file_size : 上传文件大小限制, 单位BYTE $destination_folder : 上传文件路径 $watermark : 是否附加水印(1为加水印,其他为不加水印); 使用说明: . 将PHP.INI文件里面的"extension=php_gd2.dll"一行前面的;号去掉,因为我们要用到GD库; . 将extension_dir =改为你的php_gd2.dll所在目录; ******************************************************************************/ //上传文件类型列表 $uptypes = array ( 'image/jpg' , 'image/jpeg' , 'image/png' , 'image/pjpeg' , 'image/gif' , 'image/bmp' , 'image/x-png' ); $max_file_size =2000000; //上传文件大小限制, 单位BYTE $destination_folder = "uploadimg/" ; //上传文件路径 $watermark =1; //是否附加水印(1为加水印,其他为不加水印); $watertype =1; //水印类型(1为文字,2为图片) $waterposition =1; //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中); $waterstring = "http://www.xplore.cn/" ; //水印字符串 $waterimg = "xplore.gif" ; //水印图片 $imgpreview =1; //是否生成预览图(1为生成,其他为不生成); $imgpreviewsize =1/2; //缩略图比例 ?> <html> <head> <title>ZwelL图片上传程序</title> <style type= "text/css" > <!-- body { font-size: 9pt; } input { background-color: #66CCFF; border: 1px inset #CCCCCC; } --> </style> </head> <body> <form enctype= "multipart/form-data" method= "post" name= "upform" > 上传文件: <input name= "upfile" type= "file" > <input type= "submit" value= "上传" ><br> 允许上传的文件类型为:<?=implode( ', ' , $uptypes )?> </form> <?php if ( $_SERVER [ 'REQUEST_METHOD' ] == 'POST' ) { if (! is_uploaded_file ( $_FILES [ "upfile" ][tmp_name])) //是否存在文件 { echo "图片不存在!" ; exit ; } $file = $_FILES [ "upfile" ]; if ( $max_file_size < $file [ "size" ]) //检查文件大小 { echo "文件太大!" ; exit ; } if (!in_array( $file [ "type" ], $uptypes )) //检查文件类型 { echo "文件类型不符!" . $file [ "type" ]; exit ; } if (! file_exists ( $destination_folder )) { mkdir ( $destination_folder ); } $filename = $file [ "tmp_name" ]; $image_size = getimagesize ( $filename ); $pinfo = pathinfo ( $file [ "name" ]); $ftype = $pinfo [ 'extension' ]; $destination = $destination_folder .time(). "." . $ftype ; if ( file_exists ( $destination ) && $overwrite != true) { echo "同名文件已经存在了" ; exit ; } if (!move_uploaded_file ( $filename , $destination )) { echo "移动文件出错" ; exit ; } $pinfo = pathinfo ( $destination ); $fname = $pinfo [ basename ]; echo " <font color=red>已经成功上传</font><br>文件名: <font color=blue>" . $destination_folder . $fname . "</font><br>" ; echo " 宽度:" . $image_size [0]; echo " 长度:" . $image_size [1]; echo "<br> 大小:" . $file [ "size" ]. " bytes" ; if ( $watermark ==1) { $iinfo = getimagesize ( $destination , $iinfo ); $nimage =imagecreatetruecolor( $image_size [0], $image_size [1]); $white =imagecolorallocate( $nimage ,255,255,255); $black =imagecolorallocate( $nimage ,0,0,0); $red =imagecolorallocate( $nimage ,255,0,0); imagefill( $nimage ,0,0, $white ); switch ( $iinfo [2]) { case 1: $simage =imagecreatefromgif( $destination ); break ; case 2: $simage =imagecreatefromjpeg( $destination ); break ; case 3: $simage =imagecreatefrompng( $destination ); break ; case 6: $simage =imagecreatefromwbmp( $destination ); break ; default : die ( "不支持的文件类型" ); exit ; } imagecopy( $nimage , $simage ,0,0,0,0, $image_size [0], $image_size [1]); imagefilledrectangle( $nimage ,1, $image_size [1]-15,80, $image_size [1], $white ); switch ( $watertype ) { case 1: //加水印字符串 imagestring( $nimage ,2,3, $image_size [1]-15, $waterstring , $black ); break ; case 2: //加水印图片 $simage1 =imagecreatefromgif( "xplore.gif" ); imagecopy( $nimage , $simage1 ,0,0,0,0,85,15); imagedestroy( $simage1 ); break ; } switch ( $iinfo [2]) { case 1: //imagegif($nimage, $destination); imagejpeg( $nimage , $destination ); break ; case 2: imagejpeg( $nimage , $destination ); break ; case 3: imagepng( $nimage , $destination ); break ; case 6: imagewbmp( $nimage , $destination ); //imagejpeg($nimage, $destination); break ; } //覆盖原上传文件 imagedestroy( $nimage ); imagedestroy( $simage ); } if ( $imgpreview ==1) { echo "<br>图片预览:<br>" ; echo "<img src=" ".$destination." " width=" .( $image_size [0]* $imgpreviewsize ). " height=" .( $image_size [1]* $imgpreviewsize ); echo " alt=" 图片预览:r文件名: ".$destination." r上传时间: ">" ; } } ?> </body> </html>查看更多关于PHP中上传图片到服务器中程序代码 - php上传下载的详细内容...
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