how to get filetype (extension)?

• herrfischer

• January 28, 2014 at 3:00 am

i have a custom field code in my template where i get the filesize, any idea how to get the filetype, too? (file extension).

<?php while(the_flexible_field("downloads")): ?>
<?php if(get_row_layout() == 'flexibel_download'): // layout: Content ?>  
<?php $attachment_id = get_sub_field('datei');
	$url = wp_get_attachment_url( $attachment_id );
	$title = get_the_title( $attachment_id );
	// part where to get the filesize
	$filesize = filesize( get_attached_file( $attachment_id ) );
	$filesize = size_format($filesize, 2);	?>

<li class="cf dlbox">
<a href="<?php echo $url; ?>" class="cf"><?php echo $title; ?><small><strong>Dateigröße:</strong>&nbsp;<em>(<?php echo $filesize; ?>)</em></small></a>
</li>
<?php endif; endwhile; ?> 

• smspaul

• January 28, 2014 at 4:11 am

Hi there, what you’re trying to do could be achieved with a built-in PHP function.

Check out this article:

http://stackoverflow.com/questions/173868/how-to-extract-a-file-extension-in-php

You would declare a variable to use as the file extension. Something like:

$ext = pathinfo($url, PATHINFO_EXTENSION);

Reference: http://php.net/manual/en/function.pathinfo.php

• James

• January 28, 2014 at 4:40 am

Hi @herrfischer, @smspaul’s answer should do the trick. 🙂

• herrfischer

• January 28, 2014 at 8:00 pm

great, thanks that works 🙂

<?php if(get_field("downloads")): ?>
<div id="downloadbox">
<h3>Files</h3>
<ul class="downloads">
<?php while(the_flexible_field("downloads")): ?>
<?php if(get_row_layout() == 'flexible_download'): // layout: Content ?>  
<?php $attachment_id = get_sub_field('file');
	$url = wp_get_attachment_url( $attachment_id );
	$title = get_the_title( $attachment_id );
	// part where to get the filesize
	$filesize = filesize( get_attached_file( $attachment_id ) );
	$filesize = size_format($filesize, 2);		

	// part where to get the extension
	$path_info = pathinfo( get_attached_file( $attachment_id ) );?>
<li class="cf dlbox">
	<a href="<?php echo $url; ?>" class="cf">
	<span class="dl-title"><?php echo $title; ?><small><nobr><strong>Size:</strong>&nbsp;<em>(<?php echo $filesize; ?>)</em></nobr></small></span>
<span class="dl-extension"><span class="dl-extension-inner"><?php echo $path_info['extension']; ?></span></span>
</a>
</li>
<?php endif; endwhile; ?> 
</ul>
</div>
<?php endif; ?>

• moorewebx

• August 9, 2017 at 7:47 am

This worked for me and I am able to get the file type extension but now I would like to use an if statement with that extension so I can assign icons to my files based on the file type. So for example, if the filetype equals pdf then I would output a pdf icon. How can I do an if else type of statement using this?

I tried the following but no luck:

<?php $attachment_id = get_field('document_upload');
$url = wp_get_attachment_url( $attachment_id );
$title = get_the_title( $attachment_id );

// part where to get the filesize
$filesize = filesize( get_attached_file( $attachment_id ) );
$filesize = size_format($filesize, 2);
$path_info = pathinfo( get_attached_file( $attachment_id ) );

// show custom field
if (get_field('document_upload')): ?>

<?php echo $filesize; ?>
<?php echo $path_info['extension']; ?>

<?php
if ($path_info = "pdf") {
    echo "<i class='fa fa-file-pdf-o' aria-hidden='true'></i>";
} ?>

<?php endif; ?>	

Not really sure where to go from here. Thanks

• tylerkd

• September 9, 2017 at 3:54 am

Here’s how I’ve done it. I haven’t tested uploading every file type but the ones I have tried do work. This is using material design icons.

<?php if( have_rows( 'download_list_clone_download_groups' ) ): ?>
  <section class="download-lists">
    <?php while( have_rows( 'download_list_clone_download_groups' ) ): the_row(); ?>
      <article class="download-list">
        <h3 class="download-list__title"><?php the_sub_field( 'group_title' ); ?></h3>
        <?php if( have_rows( 'downloads' ) ): ?>
          <ul>
            <?php while( have_rows( 'downloads' ) ): the_row(); ?>
              <?php $attachment_id = get_sub_field('file'); ?>
              <?php $attachment_url = wp_get_attachment_url($attachment_id); ?>
              <?php $pathinfo = pathinfo( get_attached_file($attachment_id)); ?>
              <?php $filetype = $pathinfo['extension']; ?>
              <?php
                switch ($filetype) {
                  case "pdf":
                      $fileclass = 'file-pdf';
                      break;
                  case "jpg":
                  case "jpeg":
                  case "png":
                  case "svg":
                      $fileclass = 'file-image';
                      break;
                  case "pptx":
                  case "pptm":
                  case "ppt":
                      $fileclass = 'file-powerpoint';
                      break;
                  case "xlsx":
                  case "xlsm":
                  case "xls":
                      $fileclass = 'file-excel';
                      break;
                  case "doc":
                  case "docm":
                  case "docx":
                  case "odt":
                  case "rtf":
                  case "txt":
                      $fileclass = 'file-word';
                      break;
                  default:
                      $fileclass = 'file-document';
                      break;
                }
               ?>
              <li class="download-list__download"><a href="<?php echo $attachment_url; ?>"><i class="mdi mdi-<?php echo $fileclass; ?>"></i><span><?php the_sub_field( 'download_title' ); ?></span><i class="mdi mdi-download"></i></a></li>
            <?php endwhile; ?>
          </ul>
        <?php endif; ?>
      </article>
    <?php endwhile; ?>
  </section>

<?php endif; ?>