Custom meta box save values issues – Deprecated: Function ereg() and more

by

Try the following. Replace

ereg('/\edit\.php', $_SERVER['REQUEST_URI'])

with

preg_match('/edit.php/',  $_SERVER['REQUEST_URI'])

And also change

if(isset($_POST[$meta_box['name'].'_value'])){
    $data = $_POST[$meta_box['name'].'_value'];
}

to 

if(isset($_POST[$meta_box['name'].'_value'])){
    $data = $_POST[$meta_box['name'].'_value'];
}
else
    $data = "";