Question

I’d like to use a resizing script for my images (Timthumb). I’m trying to pull from the database the first image contained in a post, and add to it the path to the script, as well as some extra instructions :

    <?php
        $content = $post->post_content;
        preg_match_all('/src=\"https?:\/\/[\S\w]+\"/i', $content, $matches, PREG_SET_ORDER);
        foreach($matches as $e)
        echo '<img src="http://site/scripts/timthumb.php?'.$e[0].'&h=320&w=214&zc=1" title="" alt="">';
        {
        }
    ?>

While this is echoing all I need, it adds, in the middle of the tag, some double quotes which are missing the image’s path (the same double quotes I need to detect the image):

<img src="http://site/scripts/timthumb.php?src="http://site/images/image.jpg"&h=320&w=214&zc=1" title="" alt="">

So my questions are :

1. How would you do to remove those
   double quotes (while I need them in
   a first moment to search for a
   pattern) ?
2. And, how would you do to
   pull only the first image in the post ?

Many thanks for any input

Answer 1

Firstly, use parentheses to capture just the bit you need, the URL itself. Secondly, if you only need the first image, then just use preg_match, rather than preg_match_all:

$content = $post->post_content;
if (preg_match('/src=\"(https?:\/\/[\S\w]+)\"/i', $content, $match))
{
    echo '<img src="http://site/scripts/timthumb.php?'.
        urlencode($match[1]).'&h=320&w=214&zc=1" title="" alt="">';
}

Note how the URL part of the regex is marked with () – as this is first bracketed expression, it will be element 1 of $match array.

I’ve also urlencoded the image URL to ensure that anything in that match is correctly encoded for use in a URL.