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PHP

• Bookmarks

  Static methods and performance in PHP

  2010/06/13 | Permalink | Comment?

  I think it should be interesting for all PHP developers.

  How fast/slow are the static methods?

  I did a test once to try and figure that out.

  It turns out:

  • Calling a method statically is just a bit faster than calling it “normally”
  • Calling a static method is twice as fast if your object didn’t exist to begin with
  • Static methods are twice as slow than function calls

  via Static methods and performance / Stoyan’s phpied.com.

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• Bookmarks

  PHP Security Checklist

  2010/05/24 | Permalink | Comment?

  

  A comprehensive and complete checklist to secure your php based web application, each point of the list include a brief description to fully understand the problem.

  The author also provide a PDF version for a very quick review.
  

  Via Definitive PHP security checklist | sk89q.

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• Code Snippets

  PHP: force file download and set its name

  2010/05/05 | Permalink | Comment?

  PHP offers us the perfect solution to force the download of a file and propose to the user a filename:

  $file ='monkey.gif';
  if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($file));
    header'Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Pragma: public');
    header('Content-Length: '. filesize($file));
  
    ob_clean();
    flush();
    readfile($file);
    exit;
  }
  

  via PHP: readfile – Manual.

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• Code Snippets

  PHP image resizing

  2010/05/02 | Permalink | Comment?

  

  SmartImage is a free PHP class under LGPL licence.

  With SmartImage you can easily:

  • resize images (in order to do thumbnails)
  • add a watermark to your images
  • convert files from/to jpg, gif and png formats
  • optimize jpg size and quality
  • rotate

  It is really simple to use, for instance you can resize and image with 4 lines of code:

  
  include "SmartImage.class.php";
  
  $img = new SmartImage($src);
  $img->resize(120, 80);
  $img->saveImage("newimages/new07.jpg", 90);
  

  More info here: SmartImage – CodiceFacile.it.

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