Polylang Global Register String

functions.php

<?php
/** 
 * @desc Small script that reads all the files in a matter of wordoress Plugin ... Polylang used to record each string in the Wordpress Admin ... (Appearance -> Languages)
 * script include polylang_global_register_string()
 * @author Raylin Aquino raylinaquino@gmail.com
 * @date 08-16-2015 (m-d-y)
 * @note: It requires installation of Polylang Plugin
 */

if (!function_exists("polylang_global_register_string")) {
    function polylang_global_register_string()
    {
        $files = scandir(get_template_directory());
        
        if (count($files) == 0)
            return; //Stop Script
        
        $exts = array(
            ".php",
            ".phtml"
        );
        $files = array_filter($files, function($d) use ($exts)
        {
            foreach ($exts as $dd)
                return strpos($d, $dd);
        });
        
        if (count($files) == 0)
            return; //Stop Script
        
        /*** Reading each file ***/
        
        foreach ($files as $file) {
            $data_file = file_get_contents(get_template_directory() . "/$file");
            
            preg_match_all('/(pll_e|pll__)\(["|\'](.*?)["|\']\)/', $data_file, $matches, PREG_SET_ORDER);
            
            foreach ($matches as $data) {
                pll_register_string("$file", $data[2]);
            }
        }
        
    }
    /*** End Function ***/
    
    add_action('init', 'polylang_global_register_string');
}
?>