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07/05/2009 at 09:40AM PDT, ID: 24544972
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7.4

PHP -- HOw to Resize a JPG Image proportionately on upload function..

Asked by sam928 in PHP Scripting Language, Images & Photo Software

Tags: PHP, jpg, JPG, resizing an image

Hello,
I have PHP script that resizes a JPG image (from an upload function)

However, the script that I have DOES NOT resize the image PROPORTIONANTLEY,  (sorry for spelling ;) )

The script i have attached resizes the image to a height of 100 pixels.  and it changes the width to 500.. (for some reason, but i do not see the variable in the PHP script,, i only see the HEIGHT of 100 variable)

What is needed to be changed to create a proportionate resize of 400 x 300.?

Anybody have an idea?

Cheers
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<?php
// include the Database classes
require_once('classes/database_php4.php');
 
// escape quotes and apostrophes if magic_quotes_gpc off
if (!get_magic_quotes_gpc()) {
  foreach($_POST as $key=>$value) {
    $temp = addslashes($value);
    $_POST[$key] = $temp;
    }
  }
 
$db = new Database('db704.perfora.net','dbo277201649','Ycd2sZaR','db277201649');
$numrows = 1;
// if more than 3 send error message //
if ($numrows > 2) {
  $maxwishes = 'Personal Upload Limit Reached for Today... Sorry';
  echo 'duplicate=y&message='.urlencode($maxwishes);
  }
else {
		function createThumbs( $pathToImages, $pathToThumbs, $thumbWidth ) 
{
  // open the directory
  $dir = opendir( $pathToImages );
 
  // loop through it, looking for any/all JPG files:
  while (false !== ($fname = readdir( $dir ))) {
    // parse path for the extension
    $info = pathinfo($pathToImages . $fname);
    // continue only if this is a JPEG image
    if ( strtolower($info['extension']) == 'jpg' ) 
    {
      echo "Creating thumbnail for {$fname} <br />";
 
      // load image and get image size
      $img = imagecreatefromjpeg( "{$pathToImages}{$fname}" );
      $width = imagesx( $img );
      $height = imagesy( $img );
 
      // calculate thumbnail size
      $new_width = $thumbWidth;
      $new_height = floor( $height * ( $thumbWidth / $width ) );
      $new_height = 100;
 
      // create a new temporary image
      $tmp_img = imagecreatetruecolor( $new_width, $new_height );
      srand(time());
      $random = (rand()%999);
      $random2 = (rand()%999);
 
      // copy and resize old image into new image 
      imagecopyresized( $tmp_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height );
      $newname = 'cmsnewsv2'.$random.$random2.'.jpg';
      $_POST['new_name'] = $newname;
 
      // save thumbnail into a file
      imagejpeg( $tmp_img, "{$pathToThumbs}{$newname}" );
      unlink($tmp_img, "{$pathToimages}{$fname}");
      $tmp_img = "";
      $img = "";
      $info = "";
      $fname = "";
    }
  }
  // close the directory
  closedir( $dir );
}
createThumbs("files/","files/thumbs/",500);
  $sql = 'INSERT INTO cmsnewsv2 (story_title,story_body,story_date,story_postedby,story_photo,story_link,story_price)
          VALUES ("'.$_POST['ttitle'].'","'.$_POST['story'].'","'.$_POST['date'].'","'.$_POST['author'].'","'.$_POST['new_name'].'","'.$_POST['uurl'].'","'.$_POST['pprice'].'")';
 
	$result = $db->query($sql);
  if ($result) {
    $created = 'Thankyou!';
    echo 'duplicate=n&message='.urlencode($created);
}
}
?>
 
Keywords: PHP -- HOw to Resize a JPG Image p…
 
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[+][-]07/05/09 09:46 AM, ID: 24780486

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About this solution

Zones: PHP Scripting Language, Images & Photo Software
Tags: PHP, jpg, JPG, resizing an image
Sign Up Now!
Solution Provided By: Erbureth
Participating Experts: 2
Solution Grade: A
 
 
[+][-]07/05/09 10:11 AM, ID: 24780576

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[+][-]07/05/09 10:35 AM, ID: 24780646

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