get the url file by name of image

Question

Hi everyone I have several image in my media folder in wordpress

when a save a new image Wordpress save like year/month/name.png

/wp-content/uploads/2011/01/matt.png

It is possible find the image by name and return the url File like this?

wp-content/uploads/2011/01/

I am using this

    <?php $upload_dir = wp_upload_dir(); ?>
            <img src="<?php echo $upload_dir['baseurl']; ?>/<?php echo $precontent; ?>.png " class="attachment-post-thumbnail">

where $precontent is the name of image and $upload_dir['baseurl'];

return /wp-content/uploads but I need the year and month of this image so I have /wp-content/uploads/matt.png

any idea?

Answer 1

If you're trying to get the full path of the attachment think that an attachment is just post with post_type = 'attachment'. That means you can query for them by name. Also, note that posts have unique slugs. So matt.png will have the slug matt :)

function get_attachment_url_by_slug( $slug ) {
  $args = array(
    'post_type' => 'attachment',
    'name' => sanitize_title($slug),
    'posts_per_page' => 1,
    'post_status' => 'inherit',
  );
  $_header = get_posts( $args );
  $header = $_header ? array_pop($_header) : null;
  return $header ? wp_get_attachment_url($header->ID) : '';
}

And then you just have to do the following:

$header_url = get_attachment_url_by_slug('matt');

which will return the full path of your file.

Note that sanitize_title(); will auto-transform your name into a slug. So if you uploaded a file with the name. Christmas is coming.png, wordpress would have designated it a slug like christmas-is-coming. And if you use sanitize_title('Christmas is coming'); the result would also be christmas-is-coming and after that you can get the full url. :)

Answer 2

You can create a database query looking at the wp_posts table, filtering rows with post_type = 'attachment', optionally post_mime_type like 'image/%' and a guid like "%/$precontent"

You will have to take care of situations where there is:

/wp-content/uploads/2011/01/matt.png
/wp-content/uploads/2011/02/matt.png

The full URL of the image is found in the column GUID. You can parse it out and get what you need.