Add the following function in function.php which is present at the root of theme folder.
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 = $matches [1] [0];
if(empty($first_img))
{ //Defines a default image
$first_img = "/images/default.jpg";
}
return $first_img;
}
Just call the function catch_that_image(), wherever you need to get the image from the article.
e.g.
<img src="<?php echo catch_that_image();?>" width="75" height="75" alt="<?php the_title(); ?>" title="<?php the_title(); ?>" align="left" hspace="5" />
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