WP Media Library Hide Sizes

wp_media_sizes.php

<?php
/**
 * This hook tells the media uploader to only display select sizes to users.
 * @param $sizes the original image sizes available to the image editor.
 * @return $new_sizes the original $sizes and the new sizes we're adding.
 * @author Mahder
 */
function sr_add_image_sizes_to_editor($sizes) {

    $new_sizes = array();
    // Add these sizes to the size list...
    $added_sizes = array('full-width', 'full-width-wide-display');

    foreach( $added_sizes as $size ) {
        $new_sizes[$size] = $size;
    }

    // This preserves the labels in $sizes, and merges the two arrays
    $new_sizes = array_merge( $new_sizes, $sizes );

    // Remove the thumbnail size
    unset( $new_sizes['thumbnail'] );
    
    // Check for a specific taxonomy like a display type and remove some sizes if that tax is not selected.
    global $post;
    $wide_display_check = wp_get_post_terms( $post->ID, 'display_type', array("fields" => "all") );
    $post_format = $wide_display_check[0]->slug;
    if ( $post_format != 'wide-display' ) {
        unset( $new_sizes['full-width-wide-display'] );
    }

    return $new_sizes;

}
add_filter('image_size_names_choose', 'sr_add_image_sizes_to_editor', 15);