Scan for first image in post and display it [duplicate]

Question

Possible Duplicate:
Retrieve 1st image in post and set it as featured image, when post is saved/updated
VT-resize image and display it

ok guys, I have this script which I modified in order to crop the image before being displayed.

// Get URL of first image in a post
function catch_that_image() {
global $post, $posts;
$first_img = '';
ob_start();
ob_end_clean();
$output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
$first_img = $matches [1] [0];

// no image found display default image instead
if(empty($first_img)){
$first_img = "/images/default.jpg";
}

 $first_img = vt_resize( $first_img, '', 608, 250, true );


return $first_img;
}

this is the code I use to display it:

<img src="<?php echo catch_that_image() ?>" width="608" height="250" />

The vt_resize function is already built in within the theme. However the code is not returning the url, it just return an array. What am I doing wrong?

I hope a nice person answers to my question, thank you =)

Answer 1

This plugin from the Wordpress Plugin Directory seems to do what you need - Auto post thumbnail

Answer 2

Sorry to not help with your existing code but if you are open to using a plugin I can recommend: http://wordpress.org/extend/plugins/get-the-image/

It is great as it grabs the first image, or a featured image if you have one. You can also specify the dimensions to crop the image and an optional fallback image in case there is no image in the post.

You can just use <?php get_the_image(); ?> in a template and it will default to:

$defaults = array(
    'meta_key' => array( 'Thumbnail', 'thumbnail' ),
    'post_id' => $post->ID,
    'attachment' => true,
    'the_post_thumbnail' => true,
    'size' => 'thumbnail',
    'default_image' => false,
    'order_of_image' => 1,
    'link_to_post' => true,
    'image_class' => false,
    'image_scan' => false,
    'width' => false,
    'height' => false,
    'format' => 'img',
    'meta_key_save' => false,
    'callback' => null,
    'cache' => true,
    'echo' => true
);