<?php
$db = new mysqli('especificosba.com.ar', 'especificosba', 'howdoiturnthison', 'mailing');
#$stmt=$db->prepare('select sha1(concat(id,floor(UNIX_TIMESTAMP()*rand()),mail)) from mails_datos where mail="tatii.oxo@gmail.com"');
$stmt=$db->prepare('select hash from mails_datos where mail="tatii.oxo@gmail.com"');
$stmt->bind_result($hash);
$stmt->execute();
$stmt->fetch();
echo $hash;
?>