Sometimes we need to generate a CSV file dynamically, and launch it as downloadable file, it works fine in Firefox, Opera, Chrome and other guru browsers, but when we talk about Internet Explorer, maybe we need to hack the code.

By googling a little, i found an easy solution, so in php, we can do it like this :

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<?php
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false);
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename=\"exportevent.csv\";" );
header("Content-Transfer-Encoding: binary"); 
?>

You can use this little snippet to scroll to the top of the page using javascript (in case you don't wan't to use html anchors)

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<!-- The click on this link will take you to the top of the page -->
<!-- Place this link on the bottom of the page -->
<a href="#" onclick="window.scroll(); return false">Scroll to the top</a>

Here's a little snippet that allow's us to remove any non alphanumeric characters from strings. It would be very usefull when a developper need to format a given string from a registration form for example.

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<?php
// Our string
$words = "Hello! My Name Is Nabil SADKI 007!!!";
 
// Formatted string
$formatted_words = preg_replace("[^A-Za-z0-9]", "", $words ); // This will print : HelloMyNameIsNabilSADKI007
 
// Get only alpha
$formatted_words = preg_replace("[^A-Za-z]", "", $words ); // This will print : HelloMyNameIsNabilSADKI
?>

Users of Windows environments often use the PuTTY client for their connections with Linux, it allows them to have direct access to the SSH server to perform bash command line.

Such access facilitates surely the task for network administrators, developers or even the webmasters.A command line that runs in a few seconds often avoids long working hours.

Among the best practices in developing a Drupal module, the use of templates is placed high on the list, this allows us to respect the MVC pattern (or at least a small part of it).

All Drupal's based websites come's with the same administration path /admin, so if someone know that your site is built with Drupal, he can easily access the admin access page. This path can be changed easily with this little configuration. Just place this code snippet in your settings.php file, and change the admin word with the one you wan't :

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// Change mywebpanel with the word you need
// Admin page can be seen with the new link : http://www.mywebsite.com/mywebpanel
function custom_url_rewrite($op, $result, $path) {
 
  if ($op == 'alias') {
    if (preg_match('|^admin(/{0,1}.*)|', $path, $matches)) {
      return 'config'. $matches[1];
    }
  }
 
  if ($op == 'source') {
    if (preg_match('|^mywebpanel(/{0,1}.*)|', $path, $matches)) {
      return 'admin'. $matches[1];
    }
  }
 
  return $result;
 
}

You can check by this little snippet if the actual user visiting your website is logged in or not. This snippet can be used anywhere (modules, themes, blocks..)

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<?php
  global $user;
  if ($user->uid) {
    // User is logged in. Do something.
  }
  else {
    // User in anonymous. Do something.
  }
?>

Here's how you can make a string translatable in your javascript files loaded in Drupal.

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// This little code will append a <div> to the body.
// The <div> contains a translatable string "Hello world!"
// You can translate this string easily in the Back office
// of your website by browsing this url : 
// http://you.website.here/admin/build/translate/search
// and search for Hello world!
// PS : it's a case sensitive input
$('<div>'+Drupal.t("Hello world!")+'</div>').appendTo('body');

You can use imagecache directly in your module, invoke a preset, and apply it on an uploaded image with this code snippet :

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// $preset: the name of your preset
// $image['filepath']: the path to your file. E.g: sites/default/files/my_picture.jpg
// $alt: the alt of your <img> tag
// $title: the title of your <img> tag
// $attributes: your can add attributes to the <img> tag. E.g: $attributes = array('class' => 'mypic')
//          will add a class 'mypic' to your image.
print theme('imagecache', $preset, $image['filepath'], $alt, $title,  $attributes); 
 
// E.g:
print theme('imagecache', 'my_custom_thumb_preset', 'sites/deafult/files/my_picture.jpg', t('My picture alt'), t('My picture title'));