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176 lines
5.2 KiB
176 lines
5.2 KiB
<?php
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/**
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* file upload class
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*/
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class FileUpload
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{
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public $upload;
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public $uploadSize;
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public $uploadInfo;
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public $uploadFileName;
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public $uploadDir;
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public $tempFile = false;
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public $maxAcceptedFilesize = 5000;
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public $fileTooLarge = false;
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public $isImage = false;
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public $imageWidth;
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public $imageHeight;
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public $imageType;
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public $error = false;
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public $uploadError = false;
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public $fileEmpty = false;
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public $fileError = false;
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public $invalidFileFormat = false;
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public $fileNameInvalid = false;
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public $fileExtensionInvalid = false;
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public $fileExists = false;
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public $unableToCompress = false;
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public $copyError = false;
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public function __construct($upload, $uploadDir)
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{
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$this->upload = $upload;
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$this->uploadDir = $uploadDir;
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if($upload['error'])
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{
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$this->error = true;
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}
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elseif($upload['size']==0)
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{
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$this->error = true;
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#$this->fileError = true;
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$this->fileEmpty = true;
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}
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elseif($upload['size']>$this->maxAcceptedFilesize*1000)
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{
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$this->error = true;
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#$this->fileError = true;
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$this->fileTooLarge = true;
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}
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if($image=getimagesize($upload['tmp_name']))
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{
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$this->isImage = true;
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$this->imageWidth = $image[0];
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$this->imageHeight = $image[1];
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if($image[2]==1) $this->imageType = 'gif';
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if($image[2]==2) $this->imageType = 'jpeg';
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if($image[2]==3) $this->imageType = 'png';
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}
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if(!preg_match('/^[a-zA-Z0-9._\-]+$/', $this->uploadFileName) || mb_substr($this->uploadFileName, 0, 1)=='_')
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{
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#$this->error = true;
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#$this->fileError = true;
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$this->fileNameInvalid = true;
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}
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if(file_exists($this->uploadDir.$this->uploadFileName))
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{
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#$this->fileError = true;
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$this->fileExists = true;
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}
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if(!$this->fileError)
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{
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$tempFileName = uniqid(rand()).'.tmp';
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if(move_uploaded_file($this->upload['tmp_name'],$this->uploadDir.$tempFileName))
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{
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$this->tempFile = $tempFileName;
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}
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else
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{
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$this->uploadError = true;
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}
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}
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}
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/**
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* saves the uploaded file
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*
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* @param ...
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*/
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public function saveFile($filename='')
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{
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if(empty($filename))
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{
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if($this->fileNameInvalid) return false;
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$filename = $this->uploadFileName;
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}
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if(copy($this->uploadDir.$this->tempFile, $this->uploadDir.$filename)) return true;
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else return false;
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}
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/**
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* modifies and saves the uploaded image
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*
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* @param ...
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*/
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public function saveModifiedImage($width, $height, $compression, $filename='')
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{
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if(empty($filename))
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{
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if($this->fileNameInvalid) return false;
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$filename = $this->uploadFileName;
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}
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if($this->_resize_image($this->uploadDir.$this->tempFile, $this->uploadDir.$filename, $width, $height, $compression)) return true;
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else return false;
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}
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/**
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* resizes uploaded images
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*
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* @param string $uploaded_file : uploaded file
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* @param string $file : destination file
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* @param int $new_width : new width
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* @param int $new_height : new height
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* @param int $compression : compression rate
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* @return bool
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*/
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private function _resize_image($uploaded_file, $file, $new_width, $new_height, $compression=80)
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{
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if(file_exists($file))
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{
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#@chmod($file, 0777);
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@unlink($file);
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}
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#$image_info = getimagesize($uploaded_file);
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if(!$this->isImage || empty($this->imageType)) $error = true;
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if(empty($error))
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{
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if($this->imageType=='gif')
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{
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$current_image = @imagecreatefromgif($uploaded_file) or $error = true;
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if(empty($error)) $new_image = @imagecreate($new_width,$new_height) or $error = true;
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if(empty($error)) @imagecopyresampled($new_image,$current_image,0,0,0,0,$new_width,$new_height,$this->imageWidth,$this->imageWidth) or $error=true;
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if(empty($error)) @imagegif($new_image, $file) or $error = true;
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}
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elseif($this->imageType=='jpeg')
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{
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$current_image = @imagecreatefromjpeg($uploaded_file) or $error = true;
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if(empty($error)) $new_image=@imagecreatetruecolor($new_width,$new_height) or $error = true;
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if(empty($error)) @imagecopyresampled($new_image,$current_image,0,0,0,0,$new_width,$new_height,$this->imageWidth,$this->imageHeight) or $error = true;
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if(empty($error)) @imagejpeg($new_image, $file, $compression) or $error = true;
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}
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elseif($this->imageType=='png')
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{
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$current_image = @imagecreatefrompng($uploaded_file) or $error = true;
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if(empty($error)) $new_image=@imagecreatetruecolor($new_width,$new_height) or $error = true;
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if(empty($error)) @imagecopyresampled($new_image,$current_image,0,0,0,0,$new_width,$new_height,$this->imageWidth,$this->imageHeight) or $error = true;
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if(empty($error)) @imagepng($new_image, $file) or $error = $true;
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}
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}
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if(empty($error)) return true;
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else return false;
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}
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function __destruct()
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{
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if($this->tempFile)
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{
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unlink($this->uploadDir.$this->tempFile);
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}
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}
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}
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?>
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