optional image upload then resize

[poleposters]

I am creating a form to add information to a business directory. The script displays the business name, a two line description, an address, phone ,category and a profile image.

 

The script works great. Except I want the profile image upload  to be optional. If i submit the form without uploading an image I get an error message.

 

I've tried writing the form with various if-else conditionals but they keep coming up with the wrong result.

 

Any ideas.

 

Thanks.

 

<?php
  	 if(isset($_POST['Submit']))
  	 {  
	$business_name=$_POST['business_name'];
	$line_one=$_POST['line_one'];
	$line_two=$_POST['line_two'];
	$address=$_POST['address'];
	$phone=$_POST['phone'];

	$cat_id=$_POST['cat_id'];
  	 
  	 
  	 
  	 
  	 	
  	     $size = 150; // the thumbnail height
  	     $filedir = 'pics/'; // the directory for the original image
  	     $thumbdir = 'pics/'; // the directory for the thumbnail image
  	     $prefix = 'small_'; // the prefix to be added to the original name
  	     $maxfile = '2000000';
  	     $mode = '0666';
  	     $userfile_name = $_FILES['image']['name'];
  	     $userfile_tmp = $_FILES['image']['tmp_name'];
  	     $userfile_size = $_FILES['image']['size'];
  	     $userfile_type = $_FILES['image']['type'];
  	     
  	     
  	    
  	     
  	     
  	  
  	         $prod_img = $filedir.$userfile_name;
  	         $prod_img_thumb = $thumbdir.$prefix.$userfile_name;
  	         move_uploaded_file($userfile_tmp, $prod_img);
  	         chmod ($prod_img, octdec($mode));
  	         $sizes = getimagesize($prod_img);
  	         $aspect_ratio = $sizes[1]/$sizes[0]; 
  	         if ($sizes[1] <= $size)
  	         {
  	             $new_width = $sizes[0];
  	             $new_height = $sizes[1];
  	         }else{
  	             $new_height = $size;
  	             $new_width = abs($new_height/$aspect_ratio);
  	         }
  	         $destimg=ImageCreateTrueColor($new_width,$new_height)
  	             or die('Problem In Creating image');
  	         $srcimg=ImageCreateFromJPEG($prod_img)
  	             or die('Problem In opening Source Image');
  	         if(function_exists('imagecopyresampled'))
  	         {
  	             imagecopyresampled($destimg,$srcimg,0,0,0,0,$new_width,$new_height,ImageSX($srcimg),ImageSY($srcimg))
  	             or die('Problem In resizing');
  	         }else{
  	             Imagecopyresized($destimg,$srcimg,0,0,0,0,$new_width,$new_height,ImageSX($srcimg),ImageSY($srcimg))
  	             or die('Problem In resizing');
  	         }
  	         ImageJPEG($destimg,$prod_img_thumb,90)
  	             or die('Problem In saving');
  	         imagedestroy($destimg);
  	         $coupon_image=$prod_img_thumb;
  	     echo '
  	     <a href="'.$prod_img.'">
  	         <img src="'.$prod_img_thumb.'" width="'.$new_width.'" heigt="'.$new_height.'">
  	     
  	    
  	     
  	     </a>';
  	     
  	   
  	     echo $business_name;
	echo  $line_one;
	echo  $line_two;
	echo  $address;
	echo  $phone;
	echo  $coupon_image;
	echo  $cat_id;
  	     
  	     
  	     
  	     
  	
  	     
  	 }else{// display upload form

[PFMaBiSmAd]

You need to test the ['error'] element of the uploaded $_FILES['image'] array for a value of 4 -

 

UPLOAD_ERR_NO_FILE

Value: 4; No file was uploaded.

 

Reference - http://www.php.net/manual/en/features.file-upload.errors.php