Thread

I’m trying to pull images from the {body} of blog posts. How can I properly escape {body} for use in either XML parsing or just preg_match?

// can use this to grab body, but it won't parse
<?php
ob_start();
?>{body}<?php
$body = ob_get_contents();
ob_end_clean();

// this won't parse either
$body = '{body}';
$body = htmlentities($body);

// but this works
$body = '<a href="http://www.test.com/">http://www.x.com/thumbnails/x.jpg</a>';

preg_match_all('/<img[^>]+>/i',$body, $result); 

$doc = new DOMDocument();
$doc->loadHTML($body);
$xml = simplexml_import_dom($doc);
$images = $xml->xpath('//img');
foreach ($images as $img) { 
    echo $img["src"];
}

?>

The html I’m expecting in {body} doesn’t seem to be funky, so what gives? How can I escape {body} so that it will properly be parsed for either preg_matching or the xml parser?

Thanks!
-dave

Do you have php parsing on input or output?

On input you will be grabbing the {body} tag, not its content.
On output you should be grabbing the content of the body.

Is this all performed within the same template?

PHP variables set in one template only exist in that template.

Herb, I had parsing set to input, but it seems like I need both to do this; any ideas? Thanks.

<?php
ob_start();
?>{body}<?php
$body = ob_get_contents();
ob_end_clean();
$doc = new DOMDocument();
@$doc->loadHTML($body);
$xml = simplexml_import_dom($doc);
$images = $xml->xpath('//img');
foreach ($images as $img) { 
    $thumb = $img["src"];
    ?>
    {exp:imgsizer:size src="<?=$thumb?>" width="194" alt="{title}"}
    <?php
}
?>

A plug-in is probably called for.

You would need a function to capture the {body}.  Then you can do a regex to extract the src into an array.  next you would need a function to do the foreach and pass the result to {exp:imgsizer} in an embedded template.

Each time you call any plug-in ee creates a new instance, so you store the array in $SESS->cache so it is available the next time the plug-in is called in your template and allows you to deal with the parse order issue.

Plug-ins are quite simple to do.

Well I ended up using this second plugin; not ideal but it cuts to the chase.
http://www.digitaldelivery.co.uk/downloads/dd_autothumb/

I’ll investigate a plugin later, but thanks for all your help Herb.
-dave