PHP图片上传类（支持自定义路径、大小、文件名称、缩略图）

<?phpclass pic_upload{ var $FormName; //文件域名称 var $Directroy; //上传至目录 var $MaxSize; //最大上传大小 var $CanUpload; //是否可以上传 var $doUpFile; //上传的文件名 var $sm_File; //缩略图名称 var $Error; //错误参数 function ieb_upload($formName='', $dirPath='', $maxSize=2097152) //(1024*2)*1024=2097152 就是 2M { global $FormName, $Directroy, $MaxSize, $CanUpload, $Error, $doUpFile, $sm_File; //初始化各种参数 $FormName = $formName; $MaxSize = $maxSize; $CanUpload = true; $doUpFile = ''; $sm_File = ''; $Error = 0; if ($formName == ''){ $CanUpload = false; $Error = 1; break; } if ($dirPath == ''){ $Directroy = $dirPath; }else{ $Directroy = $dirPath.'/'; } } //检查文件是否存在 function scanFile() { global $FormName, $Error, $CanUpload; if ($CanUpload){ $scan = is_readable($_FILES[$FormName]['name']); if ($scan){ $Error = 2; } return $scan; } } //获取文件大小 function getSize($format = 'B') { global $FormName, $Error, $CanUpload; if ($CanUpload){ if ($_FILES[$FormName]['size'] == 0){ $Error = 3; $CanUpload = false; } switch ($format){ case 'B': return $_FILES[$FormName]['size']; break; case 'M': return ($_FILES[$FormName]['size'])/(1024*1024); } } } //获取文件类型 function getExt() { global $FormName, $Error, $CanUpload; if ($CanUpload){ $ext=$_FILES[$FormName]['name']; $extStr=explode('.',$ext); $count=count($extStr)-1; } return $extStr[$count]; } //获取文件名称 function getName() { global $FormName, $CanUpload; if ($CanUpload){ return $_FILES[$FormName]['name']; } } //新建文件名 function newName() { global $CanUpload, $FormName; if ($CanUpload){ $FullName=$_FILES[$FormName]['name']; $extStr=explode('.',$FullName); $count=count($extStr)-1; $ext = $extStr[$count]; return date('YmdHis').rand(0,9).'.'.$ext; } } //上传文件 function upload($fileName = '') { global $FormName, $Directroy, $CanUpload, $Error, $doUpFile; if ($CanUpload){ if ($_FILES[$FormName]['size'] == 0){ $Error = 3; $CanUpload = false; return $Error; break; } } if($CanUpload){ if ($fileName == ''){ $fileName = $_FILES[$FormName]['name']; } $doUpload=@copy($_FILES[$FormName]['tmp_name'], $Directroy.$fileName); if($doUpload) { $doUpFile = $fileName; chmod($Directroy.$fileName, 0777); return true; }else{ $Error = 4; return $Error; } } } //创建图片缩略图 function thumb($dscChar='',$width=150,$height=113) { global $CanUpload, $Error, $Directroy, $doUpFile, $sm_File; if ($CanUpload && $doUpFile != ''){ $srcFile = $doUpFile; if ($dscChar == ''){ $dscChar = 'sm_'; } $dscFile = $Directroy.$dscChar.$srcFile; $data = getimagesize($Directroy.$srcFile,&$info); switch ($data[2]) { case 1: $im = @imagecreatefromgif($Directroy.$srcFile); break; case 2: $im = @imagecreatefromjpeg($Directroy.$srcFile); break; case 3: $im = @imagecreatefrompng($Directroy.$srcFile); break; } $srcW=imagesx($im); $srcH=imagesy($im); $ni=imagecreatetruecolor($width,$height); imagecopyresized($ni,$im,0,0,0,0,$width,$height,$srcW,$srcH); $cr = imagejpeg($ni,$dscFile); chmod($dscFile, 0777); if ($cr){ $sm_File = $dscFile; return true; }else{ $Error = 5; return $Error; } } } //显示错误参数 function Err(){ global $Error; return $Error; } //上传后的文件名 function UpFile(){ global $doUpFile, $Error; if ($doUpFile != ''){ return $doUpFile; }else{ $Error = 6; } } //上传文件的路径 function filePath(){ global $Directroy, $doUpFile, $Error; if ($doUpFile != ''){ return $Directroy.$doUpFile; }else{ $Error = 6; } } //缩略图文件名称 function thumbMap(){ global $sm_File, $Error; if ($sm_File != ''){ return $sm_File; }else{ $Error = 6; } } //显示版本信息 function ieb_version(){ return 'IEB_UPLOAD CLASS Ver 1.1'; }}?>

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