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I have a custom post type called "Magazine" shown in the admin interface. Everytime a user uploads a file in the wp-admin to my custom post type "Magazine", I want to fire a hook because I have to process the file.

Is there any action hook I can use in this case?

Hope someone can help me.

  • do you want to resize image? – Arvind Pal Apr 18 '14 at 14:58
  • no I want to check if the uploaded file is a pdf which I want to send to a webservice. – pbaldauf Apr 19 '14 at 13:23
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Try this way, should work well

function cpt_from_attachment($attachment_ID)
    {          
    global $current_user;
    get_currentuserinfo();

    $attachment_post = get_post( $attachment_ID );

    $type = get_post_mime_type($attachment_ID);

    // DO WHAT YOU NEED
}

add_action("add_attachment", 'cpt_from_attachment');

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