How can i change this instead of isset to empty

PHP
1

this form upload image path to database and send image to folder called image how tdo i change isset to empty as i tried to change the array 1 to array ‘’ still didnt work

<?php
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}

mysql_select_db("admin", $con);
?>




<?php
 


 
/* DEBUGGING CODE COMMENTED OUT*/
//print_r($_FILES);
//echo '<br>';
//print_r($_POST);
/*END DEBUGING CODE*/
 
 
//define a maxim size for the uploaded images in Kb
define ("MAX_SIZE","100");
//This function reads the extension of the file. It is used to determine if the file is an image by checking the extension.
 
 
function getExtension($str) {
	$i = strrpos($str,".");
	if (!$i) { return ""; }
	$l = strlen($str) - $i;
	$ext = substr($str,$i+1,$l);
	return $ext;
}
//This variable is used as a flag. The value is initialized with 0 (meaning no error found) and it will be changed to 1 if an errro occures. If the error occures the file will not be uploaded.
$errors=0;
//checks if the form has been submitted
if(isset($_POST['Submit']))
{
	//reads the name of the file the user submitted for uploading
	$image=$_FILES['image']['name'];
	//if it is not empty
	if (strlen($image) >= 1)  //////////////////////////////////////////////////////// CHANGED
	{
		//get the original name of the file from the clients machine
		$filename = stripslashes($_FILES['image']['name']);
		//get the extension of the file in a lower case format
		$extension = getExtension($filename);
		$extension = strtolower($extension);
		//if it is not a known extension, we will suppose it is an error and will not upload the file, otherwize we will do more tests
		if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif"))
		{
			//print error message
			echo '<h1>Unknown extension!</h1>';
			$errors=1;
		}
		else
		{
			//get the size of the image in bytes
			//$_FILES['image']['tmp_name'] is the temporary filename of the file in which the uploaded file was stored on the server
			$size=filesize($_FILES['image']['tmp_name']);
			//compare the size with the maxim size we defined and print error if bigger
			if ($size > MAX_SIZE*102400)
			{
				echo '<h1>You have exceeded the size limit!</h1>';
				$errors=1;
			}
			//we will give an unique name, for example the time in unix time format
			$image_name=time(). '.'.$extension;
			//the new name will be containing the full path where will be stored (images folder)
			$newname="images/".$image;
 
 
 
			$query="INSERT INTO photos values ('$image','$user')"; //into database
			mysql_query( $query );
 
 
			$copied = copy($_FILES['image']['tmp_name'], $newname);
 
 
			if (!$copied)
			{
				echo '<h1>Copy unsuccessfull!</h1>';
				$errors=1;
			}
		}
	} else {  ////////////////////////////////////////////////////////////////////////////////// ADDED ELSE STATEMENT
		echo '<h1>No file was selected.</h1>';
		$errors = 1;
	}
}
//If no errors registred, print the success message
if(isset($_POST['Submit']) && $errors != 1) /////////////////////////////////////////////////////////////// CHANGED
{
	echo "<h1>File Uploaded Successfully! Try again!</h1>";
}
 
 
?>
<form name="newad" method="post" enctype="multipart/form-data" action="uploadacademy.php">
<table>
<tr><td><input type="file" name="image"></td></tr>




<tr><td><input name="Submit" type="submit" value="Upload image"></td></tr>
</table>
</form>
2

whats about


if($errors!=1)
{
if ($copied)             {      
           echo '<h1>Copy unsuccessfull!</h1>';          

   } 
else
{
echo 'Could not';
}

}

can be made better …just solution for your question :slight_smile: