Wp Filesystem

switch-upload-dir-path-url.php

<?php
/**
 * Switch Upload Dir & Url
 *
 * @since 1.0.0
 *
 * @param string $file   The file path.
 * @param string $switch The reference to the string to replace. Allowed 'dir>url', 'url>dir'.
 *
 * @return string The file url
 */
function xxx_switch_upload_dir_path_url( $file, $switch = 'dir>url' ) {

	// Get upload dir data.
	$_upload_dir = wp_upload_dir();

	// Initialize the new file path.
	$_file = '';

	if ( 'dir>url' === $switch ) {
		$_file = str_replace( $_upload_dir['basedir'], $_upload_dir['baseurl'], $file );
	} else if ( 'url>dir' === $switch ) {
		$_file = str_replace( $_upload_dir['baseurl'], $_upload_dir['basedir'], $file );
	} else {
		$_file = $file;
	}

	if ( $_file ) {
		return $_file;
	}
}

upload-size-limit.php

<?php
add_filter('upload_size_limit', function ($byte)
{
    // 10MB
    return 10000000;
});

wpFilesystemDirect.php

<?php
/**
 * WP Direct FileSystem instance
 */
function wpFilesystem()
{
    if (!class_exists('WP_Filesystem_Direct')) {
        require_once untrailingslashit(ABSPATH) . '/wp-admin/includes/class-wp-filesystem-base.php';
        require_once untrailingslashit(ABSPATH) . '/wp-admin/includes/class-wp-filesystem-direct.php';
    }

    return new \WP_Filesystem_Direct(true);
}