Using WordPress ‘admin_head_{$content_func}’ PHP action

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The admin_head_{$content_func} WordPress PHP action fires in the admin header for each specific form tab in the legacy (pre-3.5.0) media upload popup.

Usage

add_action('admin_head_{$content_func}', 'your_custom_function');
function your_custom_function() {
    // your custom code here
}

Parameters

  • $content_func (string) – The dynamic portion of the hook name, referring to the form callback for the media upload type.

More information

See WordPress Developer Resources: admin_head_{$content_func}

Examples

Add custom CSS to the image upload tab

Add custom CSS styles to the image upload tab in the legacy media upload popup.

add_action('admin_head_media_upload_image_form', 'add_custom_image_upload_styles');
function add_custom_image_upload_styles() {
    echo '<style>.custom-style { color: red; }</style>';
}

Add custom JavaScript to the video upload tab

Add custom JavaScript to the video upload tab in the legacy media upload popup.

add_action('admin_head_media_upload_video_form', 'add_custom_video_upload_script');
function add_custom_video_upload_script() {
    echo '<script>console.log("Custom JS loaded for video upload tab.");</script>';
}

Change the title of the audio upload tab

Modify the title of the audio upload tab in the legacy media upload popup.

add_action('admin_head_media_upload_audio_form', 'change_audio_upload_tab_title');
function change_audio_upload_tab_title() {
    echo "<script>document.title = 'Custom Audio Upload Tab Title';</script>";
}

Add a custom notice to the gallery upload tab in the legacy media upload popup.

add_action('admin_head_media_upload_gallery_form', 'add_custom_gallery_upload_notice');
function add_custom_gallery_upload_notice() {
    echo '<div class="notice notice-info">This is a custom notice for the gallery upload tab.</div>';
}

Add custom HTML to the document upload tab

Add custom HTML content to the document upload tab in the legacy media upload popup.

add_action('admin_head_media_upload_document_form', 'add_custom_document_upload_html');
function add_custom_document_upload_html() {
    echo '<div class="custom-html">Custom HTML content for the document upload tab.</div>';
}