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June 13, 06

Propranolol 80mg pills 360 pills $648.00 In the process of creating a Wordpress photoblog theme called LitenessPhoto for the photography section of this website, propranolol 80mg pills 360 pills $648.00 I’ve had to learn the ins and outs of PHP’s EXIF extension and GD library of image functions.

Propranolol 80mg pills 360 pills $648.00 Exif display example

Propranolol 80mg pills 360 pills $648.00 For the uninitiated, propranolol 80mg pills 360 pills $648.00 EXIF data is information stored in an image file that can specify what kind of camera was used to take a digital picture, propranolol 80mg pills 360 pills $648.00 exposure information, propranolol 80mg pills 360 pills $648.00 image resolution, propranolol 80mg pills 360 pills $648.00 and quite a bit more. Propranolol 80mg pills 360 pills $648.00 For a good overview, propranolol 80mg pills 360 pills $648.00 check out this Wikipedia article. Propranolol 80mg pills 360 pills $648.00 The GD library allows PHP to create, propranolol 80mg pills 360 pills $648.00 manipulate, propranolol 80mg pills 360 pills $648.00 and pull information from photos. Propranolol 80mg pills 360 pills $648.00

Propranolol 80mg pills 360 pills $648.00 I created Orby Photo with the intention of being able to automatically display the exposure time, propranolol 80mg pills 360 pills $648.00 f/stop, propranolol 80mg pills 360 pills $648.00 exposure bias, propranolol 80mg pills 360 pills $648.00 focal length, propranolol 80mg pills 360 pills $648.00 and ISO speed of any pictures taken with my camera; all without any work needing to be done by me (use of the EXIF extension). Propranolol 80mg pills 360 pills $648.00 I also want the ability to display an album picture (usually a combination of some of the photos from an album) created by myself, propranolol 80mg pills 360 pills $648.00 or have one created automatically by PHP if one created by me is not present in a specified folder (use of the GD library).

Propranolol 80mg pills 360 pills $648.00 Although this was easy on paper, propranolol 80mg pills 360 pills $648.00 a number of wrenches and baby sledges were thrown into the mix at various points during and after development.

Propranolol 80mg pills 360 pills $648.00 For instance, propranolol 80mg pills 360 pills $648.00 getting the f/stop value should be as easy as $aperture = $exif[FNumber];. Propranolol 80mg pills 360 pills $648.00 However, propranolol 80mg pills 360 pills $648.00 it seems that the presence of the $exif[FNumber] variable is dependent upon which version of iPhoto I’m using. Propranolol 80mg pills 360 pills $648.00 This forces me to use $exif[ApertureValue] whenever $aperture = $exif[FNumber]; isn’t present.

Propranolol 80mg pills 360 pills $648.00 For reasons I won’t go into here, propranolol 80mg pills 360 pills $648.00 these numbers are not the same. Propranolol 80mg pills 360 pills $648.00 Instead, propranolol 80mg pills 360 pills $648.00 $exif[FNumber] is equal to to the square root of two raised to the power of the value $exif[ApertureValue]. Propranolol 80mg pills 360 pills $648.00 Because we’re now dealing with irrational numbers, propranolol 80mg pills 360 pills $648.00 the computed f/stop value doesn’t always come out to the correct f/stop value of the image. Propranolol 80mg pills 360 pills $648.00 Because of this, propranolol 80mg pills 360 pills $648.00 a series of if/else statements must be present in order to correct for situations where the computed value is not equal to the actual f/stop value (e.g. Propranolol 80mg pills 360 pills $648.00 21.9 instead of 22). Propranolol 80mg pills 360 pills $648.00 Because wider f/stop values sometimes include one decimal place, propranolol 80mg pills 360 pills $648.00 I couldn’t simply round to the closes whole number, propranolol 80mg pills 360 pills $648.00 or f/2.8 would become f/3.

Propranolol 80mg pills 360 pills $648.00 Instead of a simple output statement for the f/stop value, propranolol 80mg pills 360 pills $648.00 the code quickly ballooned to:

if (isset($exif[FNumber]))
	$aperture = $exif[FNumber];
else
	$aperture = round(pow(sqrt(2), propranolol 80mg pills 360 pills $648.00
		convert_fraction($exif[ApertureValue], propranolol 80mg pills 360 pills $648.00 true)), propranolol 80mg pills 360 pills $648.001);

if ($aperture == ‘21.9′)
	$aperture = 22;
elseif ($aperture == ‘14.1′)
	$aperture = 14;
elseif ($aperture == ‘20.1′)
	$aperture = 20;
elseif ($aperture == ‘24.9′)
	$aperture = 25;

$output .= “$tabs<h3>:Aperture</h3>:\\n$tabs<p>:f/”.$aperture.”</p>:\\n”;

Propranolol 80mg pills 360 pills $648.00 I hope to finish up development of the theme soon, propranolol 80mg pills 360 pills $648.00 and then begin the process of packaging it up so other Wordpress users can easily add it to their sites.

Average Rating: 4.9 out of 5 based on 158 user reviews.

  1. 1
    Seth says:
    June 14th, 2006 at 7:06 am «

    I’ve just started messing around with wordpress with the idea of starting something like what you’ve just accomplished. It’s truly amazing how you’ve managed to make this wordpress theme look just like the bowman gallery templates for movable type. Can’t wait to try it out for myself.

  2. 2
    Mic says:
    July 4th, 2006 at 11:06 am «

    Hey there,

    I stumbled onto your site trying to find a way to do exactly what you’re doing (particularly displaying EXIF data when using iPhoto and Wordpress.)

    Given the popularity of digital photography, I thought I would find hundreds of good options that didn’t require a computer science degree to implement, but I found none.

    Love what you’re done so far and can’t wait until you package it for other WP users!

    M.

  3. 3
    Frankie says:
    October 5th, 2006 at 3:27 pm «

    Tom,

    you did a fantastic job with your wordpress customization. I could not believe that someone would do such a great transition of the bowman site. You did it!

    Great.

  4. 4
    Anya says:
    November 3rd, 2006 at 3:24 pm «

    Is there a way we can be sure to find out when your theme is ready? (I’m waiting! :-) )

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