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[SOLVED] Stuck...

lewis987

By lewis987
in PHP Coding Help

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lewis987 Member

lewis987

Posted
Posted

Im trying out oop (for a change) and so far so good. only problem is im getting this;

 

Fatal error: Can't use function return value in write context in ........./sources/functions.php on line 18

 

Line 18 reads:

 

if(empty(trim($VARS[$key]))){

 

 

the full code is posted below:

 

<?PHP
	class Fld_Vwr{
		var $epoch;
		var $lastSQLStatment = "";
		var $lastError = "";
		var $DBUser = "";
		var $DBName = "";
		var $DBHost = "";
		var $DBPass = "";
		var $DBPort = "";
		var $DB = "";

		function StartDL($VARS){
			$requiredVars = array("file_name", "title");

			foreach($requiredVars as $key)
			{
				if(empty(trim($VARS[$key]))){
				{
					$fail = TRUE;
				}
			}

			//Explode the name at the slash:
			$exp = explode("/", $VARS['file_name']);
			$name = "downloads/".$exp[count($exp)-1];
			if(!@copy($VARS['file_name'], $name) || $fail === TRUE){
				return false
			}else{
				header('Content-Description: File Transfer');
				header('Content-Type: application/zip');
				header('Content-Disposition: attachment; filename='.urldecode($VARS['title']).".zip");
				header('Content-Transfer-Encoding: binary');
				header('Expires: 0');
				header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
				header('Pragma: public');
				header('Content-Length: ' . filesize($VARS['file_name']));
				ob_clean();
				flush();
				readfile($name);
				ob_end_flush();
				unlink($name);
			}
		}

		function hash_name($VAR2){
			$epoch = time();
			//Get PHP Version:
			$VER = phpversion();
			$EXPLODE = explode(".", $VER);

			//Date stuff:
			$DATE_FORMATS = array("dmy","dny","jny","jmy","dmY","dnY","jnY","jmY");
			$date_number = rand(0, (count($DATE_FORMATS)-1));
			$date = date($DATE_FORMATS[$date_number]);

			//Time stuff:
			$real_time_formats = array("gis","His","Gis","his","gisu","Hisu","Gisu","hisu");
			$real_time_number = rand(0,(count($real_time_formats) -1));
			$real_time = date($real_time_formats[$real_time_number]);

			//Build String

			$STRING = str_shuffle($VAR2 . $Algos[$hash_number] . $date . $real_time . $this->epoch);

			$STRING = str_replace(",","", $STRING);
			$STRING = str_replace("_","", $STRING);
			$STRING = str_replace("+","", $STRING);
			$STRING = str_replace("-","", $STRING);
			$STRING = str_replace("(","", $STRING);
			$STRING = str_replace(")","", $STRING);


			if($EXPLODE[0] > "4"){
				$hash = hash('whirlpool', $STRING);
			}else{
				$hash = "";
				while(strlen($hash) <= 96){
					$hash .= md5(crc32(sha1(crc32(md5(sha1(md5(sha1($STRING))).md5(crc32(md5($STRING))))))));
				}
				$hash = str_shuffle($hash);
			}

			return $hash;
		}

		function send_File($VARS){
			$epoch = time();
			$requiredVars = array("location", "file_types", "dir", "temp_dir", "get_var_1", "get_var_2", "get_var_3");

			foreach($requiredVars as $key)
			{
				if(empty(trim($VARS[$key]))){
				{
					return false;
				}
			}

			$epoch = $this->epoch;

			$folder = $LOCATION.urldecode($_GET[$VARS["get_var_1"]])."/".urldecode($_GET[$VARS["get_var_2"]])."/";

			///File ext///
			$explode = explode(".",$_GET[$VARS["get_var_3"]]);
			$last = count($explode) - 1;
			$file_ext = strtolower($explode[$last]);

			if($VARS["file_types"][0] == "ANY"){
				$ok = 1;
			}else{
				//Check file ext:
				for($i = 0; $i < count($VARS["file_types"]); $i++){
					if($file_ext == $VARS["file_types"][$i]){
						$ok = 1;
						$i = 5000;
					}else{
						$ok = 2;
					}
				}
			}

			if($ok == 2){
				die("<div align=\"center\"><div class=\"error\">
						Invalid file. <br />The file may exist, but the file extension is invalid.
					</div></div></body></html>");
			}

			//Zip file name:
			$file = time().str_replace(" ","_",$_GET[$VARS["get_var_3"]]);
			$file = str_shuffle($file);

			//Add the extension on the zip folder.
			$zip_name = $dir.$file;
			$zip_name = str_replace("'","", $zip_name);

			$zip = new ZipArchive();
			//Set the tempory file name:
			$tempFile = str_replace(" ","_",$_GET[$VARS["get_var_3"]]);
			$tempFile = $VARS["temp_dir"].$tempFile.$_SERVER['remote_addr'].$epoch;

			if(!@copy($folder.$_GET[$VARS["get_var_3"]], $tempFile)){
				die("<div align=\"center\"><div class=\"error\">
						Cannot copy file specified. <br />Please ensure it exists.
					</div></div></body></html>");
			}

			if ($zip->open($zip_name.".zip", ZIPARCHIVE::OVERWRITE)!==TRUE) {
				exit("cannot create file.</body></html>");
			}

			$zip->addFile($tempFile , $_GET[$VARS["get_var_3"]]);
			$zip->close();
			unlink($TEMP);

			return $zip_name;
		}

		function send_Folder($VARS){
			$epoch = time();
			$requiredVars = array("location", "file_types", "dir", "temp_dir", "get_var_1", "get_var_2");

			foreach($requiredVars as $key)
			{
				if(empty(trim($VARS[$key]))){
				{
					return false;
				}
			}

			$epoch = $this->epoch;

			$folder = $LOCATION.urldecode($_POST[$GET_VAR_1])."/".urldecode($_POST[$GET_VAR_2])."/";
			$open = opendir($folder);
			$i = 0;
			while(false !== ($file = readdir($open))){
				if($file != "." || $file != ".."){
					if($file_types[0] == "ANY"){
						$files[$i] = $file;
						$i++;
					}else{
						$EXPLODe = explode(".",$file);
						$last = count($EXPLODe) - 1;
						$file_ext = strtolower($EXPLODe[$last]);
						for($o = 0; $o < count($file_types); $o++){
							if($file_ext == $file_types[$o] && is_dir($file) === FALSE){
								$files[$i] = $file;
								$o = 100000;
								$i++;
							}else{

							}
						}
					}
				}
			}
			//Create Zip Archive:
				//Create Zip Class Here:
				$zip = new ZipArchive();

				//Make the Zip name here:
				$file = time().str_replace(" ","_", urldecode($_POST[$GET_VAR_2]));
				$file = str_shuffle($file);
				$file = str_replace("/","", $file);
				$zip_name = $dir.$file.".zip";
			//Create the zip file:
				$res = $zip->open($zip_name, ZIPARCHIVE::OVERWRITE);
				if($res !== TRUE) {
					die("cannot open $zip_name. Ended with the error code: $res</body></html>");
				}
			//Create loop to copy files to temp dir, add files and/or show error messages:
				for($i = 0; $i < count($files); $i++){
					$FILE = str_replace(" ","_",$files[$i]);
					$TEMP = $temp_dir.$FILE.$_SERVER['remote_addr'].$epoch;
					if(!@copy($folder.$files[$i], $TEMP)){
						echo("<div class=\"error\">
								Cannot copy file specified. <br />Please ensure it exists and that it is the directory specified.
							</div>");
					}else{
						$zip->addFile($TEMP , $files[$i]);
					}
				}

				$zip->close();
			//Remove all the files here:
				for($i = 0; $i < count($files); $i++){
					$FILE = str_replace(" ","_",$files[$i]);
					$TEMP = $temp_dir.$FILE.$epoch;
					unlink($TEMP);
				}
			//Send the file name back to the script calling this file!
			return $zip_name;
		}

		function Clean_Dls(){
			$time = time();
			if(is_file("temp/REQ_time.txt") === TRUE){
				$file_time = file_get_contents("temp/REQ_time.txt");
			}else{
				file_put_contents("temp/REQ_time.txt", $time);
				$file_time = $time;
			}

			//We need a limit for the file time, This can be changed, but we have set it to about a day.
			$limit = 60 * 60 * 24;

			if($file_time + $limit < $time){
				//Try and open the downloads folder:
				$open = @opendir("downloads/");
				while(FALSE !== ($file = readdir($open))){
					if($file_time + $limit < filemtime("downloads/".$file)){
						unlink("downloads/".$file);
					}
				}
				file_put_contents("temp/REQ_time.txt", $time);
			}
		}

		//Database stuff:

		function getError(){
			print("Error!<br /> ".$this->lastError."<br />The SQL executed was: ".$this->lastSQLStatement);
		}

		function MyConnectOptions(){
			$this->DBUser = "*************";
			$this->DBPass = "***********";
			$this->DBName = "*************";
			$this->DBHost = "localhost";
			$this->DBPort = "";
		}

		function Connect(){
			//Before we connect, We need to check the port variable to see if its set and is a number:
			if(ctype_digit($this->DBPort) === TRUE){
				$this->DB = mysql_connect($this->DBHost.":".$this->DBPort, $this->DBUser, $this->DBPass) or die("MySQL Error:".mysql_error());
			}else{
				$this->DB = mysql_connect($this->DBHost, $this->DBUser, $this->DBPass) or die("MySQL Error:".mysql_error());
			}

			mysql_select_db($this->DBName, $this->DB) or die("MySQL Error:".mysql_error());
		}

		function Disconnect(){
			mysql_close($this->DB) or die("MySQL Error:".mysql_error());
		}

		function Insert($tbl){
			//Sets all the variables:
			$cols = array();
			$cols_use = array();
			$values_use = array();

			//We need to get ALL the columns from the table in $tbl;
			$pulledCols = mysql_query("SHOW COLUMNS FROM ".$tbl, $this->DB) or die("MySQL Error: ".mysql_error);
			while($columns = mysql_fetch_assoc($pulledCols)){
				$cols[] = $columns['Field'];
			}

			foreach( $_POST as $key => $value){
				if(in_array($key, $cols) && trim($value)){
					if($value == "DATESTAMP"){
						$value_use[] = "NOW()";
					}else{
						if(is_numeric($value) === TRUE){
							$values_use[] = $value;
						}else{
							$values_use[] = ( get_magic_quotes_gpc() ) ? "'".$value."'" : "'".addslashes($value)."'";
						}
						$cols_use[] = "`".$key."`";
					}
				}
			}
			if( (sizeof($cols_use) == 0 ) || (sizeof($values_use) == 0)){
				$this->lastError = "Error: There was no data passed!";
				return false;
			}else{
				$SQL = "INSERT INTO  `".$tbl."` (".implode(",",$cols_use). ") VALUES (".implode(",",$values_use). ")";
				if( @mysql_query($SQL, $this->DB)){
					return true;
				}else{
					$this->lastError = "Error: ".mysql_error();
					$this->lastSQLStatement = $SQL;
					return false;
				}
			}
		}

		function Select($tbl, $col, $data){
			//Ensure all the data has been populated:
			if(empty($tbl) || empty($col) || empty($data)){
				//Throw error:
				$this->lastError = "Error: No tables and/or columns set!";
				return false;
			}

			//Secure the data:
			$tbl = ( get_magic_quotes_gpc() ) ? $tbl : addslashes($tbl);
			$col = ( get_magic_quotes_gpc() ) ? $col : addslashes($col);
			$data = ( get_magic_quotes_gpc() ) ? $data : addslashes($data);

			if(is_array($col) === TRUE){
				if(is_array($data) === TRUE && count($col) == count($data)){
					//Build up the SQL here:
					$SQL = "SELECT * FROM `".$tbl."` WHERE ";
					for($i = 0; $i < count($col); $i++){
						$SQL .=  "`".$col[$i]."` = '".$data[$i]."'";
						if($i + 1 != count($col)){
							$SQL .= " AND ";
						}
					}
				}else{
					$this->lastError = "Error: Invalid data sent";
					return false;
				}
			}else{
				$SQL = "SELECT * FROM `".$tbl."` WHERE `".$col."` = '".$data."';";
			}

			if($Q = @mysql_query($SQL, $this->DB)){
				$this->lastSQLStatement = $SQL;
				return $Q;
			}else{
				$this->lastError = "Error: ".mysql_error();
				$this->lastSQLStatement = $SQL;
				return false;
			}
		}

		function Delete($tbl, $col, $data){
			//Ensure all the data has been populated:
			if(empty($tbl) || empty($col) || empty($data)){
				//Throw error:
				$this->lastError = "Error: No tables and/or columns set!";
				return false;
			}

			//Secure the data:
			$tbl = ( get_magic_quotes_gpc() ) ? $tbl : addslashes($tbl);
			$col = ( get_magic_quotes_gpc() ) ? $col : addslashes($col);
			$data = ( get_magic_quotes_gpc() ) ? $data : addslashes($data);

			if(is_array($col) === TRUE){
				if(is_array($data) === TRUE && count($col) == count($data)){
					//Build up the SQL here:
					$SQL = "DELETE FROM `".$tbl."` WHERE ";
					for($i = 0; $i < count($col); $i++){
						$SQL .=  "`".$col[$i]."` = '".$data[$i]."'";
						if($i + 1 != count($col)){
							$SQL .= " AND ";
						}
					}
				}else{
					$this->lastError = "Error: Invalid data sent";
					return false;
				}
			}else{
				$SQL = "DELETE FROM `".$tbl."` WHERE `".$col."` = '".$data."';";
			}

			if($Q = @mysql_query($SQL, $this->DB)){
				return $Q;
			}else{
				$this->lastError = "Error: ".mysql_error();
				return false;
			}
			$this->lastSQLStatement = $SQL;
		}

		function Update($tbl, $upd_col, $upd_data, $def_col, $def_data){
			//Ensure all the data has been populated:
			if(empty($tbl) || empty($upd_col) || empty($upd_data) || empty($def_col) || empty($def_data)){
				//Throw error:
				$this->lastError = "Error: one of the vars wasn't populated!";
				return false;
			}

			//Secure the data:
			$tbl = ( get_magic_quotes_gpc() ) ? $tbl : addslashes($tbl);
			$upd_col = ( get_magic_quotes_gpc() ) ? $upd_col : addslashes($upd_col);
			$upd_data = ( get_magic_quotes_gpc() ) ? $upd_data : addslashes($upd_data);
			$def_col = ( get_magic_quotes_gpc() ) ? $def_col : addslashes($def_col);
			$def_data = ( get_magic_quotes_gpc() ) ? $def_data : addslashes($def_data);

			$SQL = "UPDATE `$tbl` SET ";
			if(is_array($upd_col) === TRUE && is_array($upd_data) === TRUE){
				if(count($upd_col) == count($upd_data)){
					for($i = 0; $i < count($upd_col); $i++){
						if($upd_data == "DATESTAMP"){
							$upd_data = "NOW()";
						}
						$SQL .= "`".$upd_col[$i]."` = '".$upd_data."' ";
						if($i + 1 != count($upd_col)){
							$SQL .= ", ";
						}
					}
				}else{
					$this->lastError = "Error: Invalid data sent.";
					return false;
				}
			}elseif(!is_array($upd_col) && !is_array($upd_data)){
				$SQL .= "`".$upd_col."` = '".$upd_data."'";
			}else{
				$this->lastError = "Error: Invalid data sent.";
				return false;
			}

			if(is_array($def_col) === TRUE){
				if(is_array($def_data) === TRUE && count($col) == count($data)){
					//Build up the SQL here:
					$SQL .= " WHERE ";
					for($i = 0; $i < count($col); $i++){
						$SQL .=  "`".$def_col[$i]."` = '".$def_data[$i]."'";
						if($i + 1 != count($col)){
							$SQL .= " AND ";
						}
					}
				}else{
					$this->lastError = "Error: Invalid data sent";
					return false;
				}
			}else{
				$SQL .= " WHERE `".$col."` = '".$data."';";
			}

			if($Q = @mysql_query($SQL, $this->DB)){
				return true;
			}else{
				$this->lastError = "Error: ".mysql_error();
				return false;
			}
			$this->lastSQLStatement = $SQL;
		}
	}
?>

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