<h1>
<?php
$connect = mysql_connect (localhost, =====, '====');
$select_db = mysql_select_db('======');
$select = mysql_query("SELECT * FROM tabla WHERE kol_vo <> 0 ORDER BY RAND() LIMIT 1");
$result = mysql_fetch_array($select);
?>
Текст: <a href = 'http://<?=$result['zak']?>' target= _blank><br>ОЗНАКОМИТЬСЯ</a><br><br>
Текст: <a href = 'http://<?=$result['url_otz']?>' target= _blank><br>РАЗМЕСТИТЬ ОТЗЫВ</a><br><br>
<p><font size="6" color="red" face="Arial">ТЕКСТ</font>
</h1>
<form action='index1.php' method='post'>
<input type='hidden' name='id' value='<?=$result['id']?>'>
<button>Кнопка</button>
</form>
<input type='hidden' name='id' value='<?=$result['id']?>'>
$sql = "UPDATE tabla SET kol_vo = kol_vo - 1 WHERE id = \"{$_POST['id']}\"";