Open Source Design

Here’s a Wordpress code snippets I thought you might find useful. It is a functions you can dump in functions.php and then use in your theme. This one would get you the first image from any post you pass it. This is a great way for you guys to get thumbnails for your posts without extra effort. Here we go:

Snippet

Paste this code into anywhere in your functions.php file

function get_first_image($post_ID, $fullsize=false, $max_dims=false){
	$thumbargs = array(
	'post_type' => 'attachment',
	'post_status' => null,
	'post_parent' => $post_ID
	);
	$thumbs = get_posts($thumbargs);
	if ($thumbs) {
		$num = count($thumbs)-1;
		return get_attachment_innerHTML($thumbs[$num]->ID, $fullsize, $max_dims);
	}
}

Parameters

This function expects to be passed three parameters: $post_ID The ID of the post you want the first image for (you can get it easily from the loop for example) $fullsize Are you trying to refer to the full size image? [true] or to the thumbnail [false]. Default: false $max_dims Do you want to make the image resize proportionally? If so, pass a single number [300] to limit it equally on both height and width or pass an array of two values, width and height [array(300,200)] to have different height and width size limits. If you don’t want to limit size pass false. [false] Default: false

Returns

This function would return the img tag with the alt tag, image resizing and all. So putting this in your theme:

get_first_image (35, true, array(300, 350));

Might return this:

  <img title="my image title" src="http://artfocus.org.il/en/wp-content/uploads/2008/08/durham-jd_coll-stones_brasilian2.jpg" alt="my image description" width="300" />

In this case http://artfocus.org.il/en/wp-content/uploads/2008/08/durham-jd_coll-stones_brasilian2.jpg is the full sized image, and being of landscape proportions it is being its size is being resized to proportionally fit the 300px width. If it would have been a vertical image, it might have resized by the 350px height and then its width might resize to less than 300px. Enjoy.

Thanks

Thanks to Crerem and Ben Colman, for providing bug report and patches to the code (thrugh the comments)