vij/helpers/number_title.php

<?php

function number_info($title, $post_id = 0){

    $res = [];

    $items = explode(' ', $title);

    $res['year'] = $items[4];
    $res['number'] = $number;

    $pdf_url = get_post_meta($post_id, '_pdf_file', true);
    if ($pdf_url) {
        $res['guid'] = esc_url($pdf_url);
        return $res;
    }

    $number = substr($items[2], 1, strlen($items[2]) - 2);
    $name = 'vizh_'.$number.'_'.ru2enmonths($items[3]).'_'.$items[4];
	
    //echo '<p>'.$name.'</p>';

    $findpdf = db_get("SELECT * FROM `wp_posts` WHERE `post_name` = '$name' ORDER BY `post_modified` DESC LIMIT 1");
	//echo "SELECT * FROM `wp_posts` WHERE `post_name` = '$name' ORDER BY `post_modified` DESC LIMIT 1";

    if (isset($findpdf['guid'])){
        $res['guid'] = $findpdf['guid'];
    } 
      

    return $res;    

}


function ru2enmonths($str){
    
    $ruMonths = ['январь', 'февраль', 'март', 'апрель', 'май', 'июнь', 'июль', 'август', 'сентябрь', 'октябрь', 'ноябрь', 'декабрь'];
    $enMonths = ['january', 'february', 'march', 'april', 'may', 'june', 'july', 'august', 'september', 'october', 'november', 'december'];

    $enDate = str_ireplace($ruMonths, $enMonths, $str);

    return $enDate;

}