Sniptools » PHP

WordPress Revision Control: Manage or Disable edit history in WP

Shanx — Wed, 23 Jul 2008 06:59:15 +0000

Among many new exciting features, WordPress 2.6 released the ability to store each and every revision of your posts, like an elaborate update history. Now this can be a pretty useful feature if you are only making substantive changes to your articles, but if you change a “the” or a preposition, this can be overkill.

The suggested workaround to disable this revision function is to enter a variable in your wp_config.php file. But this takes away the functionality from the entire blog.

Revision Control plugin for WordPress

I discovered a superb plugin today that makes this process very simple. It allows you to define the setting from the WordPress aministration interface on a Global basis. That is, to

Disable All revisions for all posts/pages
And override on a per-page/post basis.

For example, I can set Revisions to Disabled globally, and then enable it to store say 5 revisions for a Specific page(Without affecting any other pages).

You’ll find some Info ( & Download link) on it here:
http://dd32.id.au/wordpress-plugins/revision-control/

This is not MU compatible yet (untested).

Upgrade Zend Optimizer on Cpanel WHM

Shanx — Sat, 12 May 2007 05:22:32 +0000

Simple little trick to get to the latest version.

Most Cpanel/WHM servers come with PHP and Zend installed. With the recent (and important) update of PHP 5.2.1, the Zend Optimizer that is installed by default (version 3.0.1 as of this writing) breaks.

You might begin to see a message like this:

[26-Apr-2007 10:32:49] PHP Warning: Zend Optimizer does not support this version of PHP – please upgrade to the latest version of Zend Optimizer in Unknown on line

To fix this, simply login to your SSH as root and execute the following command to upgrade Zend Optimiser:

/scripts/installzendopt 3.2.8

Note that if you skip the version number, Zend Optimizer 3.0.1 will be installed by default. The trick is to specify the version as above. This will also work in the future, so as long as you know the latest released version of Zend Optimizer, just replace the red text above with that number.

Dynamic Thumbnailing with Imagemagick in PHP

Shanx — Tue, 27 May 2003 18:21:21 +0000

Here is some sample code that allows you to create a thumbnail automatically (assuming ImageMagick is already installed and functional) (based on the imagick PEAR module).

Code for dynamic thumbnails using PHP


// Specify your file details
$current_file = 'image.jpg';
$max_width = '150';

// Get the current info on the file
$current_size = getimagesize($current_file);
$current_img_width = $current_size[0];
$current_img_height = $current_size[1];
$image_base = explode('.', $current_file);

// This part gets the new thumbnail name
$image_basename = $image_base[0];
$image_ext = $image_base[1];
$thumb_name = $image_basename.'-th.'.$image_ext;

// Determine if the image actually needs to be resized
// and if it does, get the new height for it
if ($current_img_width > $max_width)
{
  $too_big_diff_ratio = $current_img_width/$max_width;
  $new_img_width = $max_width;
  $new_img_height = round($current_img_height/$too_big_diff_ratio);
  // Convert the file
  $make_magick = system("convert -geometry $new_img_width x $new_img_height $current_file $thumb_name", $retval);
  // Did it work?
  if (!($retval)) {
    echo 'Thumbnail created: ';
  }
  else {
    echo 'Error: Please try again.';
  }
}
else
{
  echo 'No need to resize.';
}