Php и mysql

$croncat1=mysql_query("select url from tb_obmenkink where id='1'");
$croncat = mysql_fetch_assoc($croncat1);
.....
    if(...) 
    {
        mysql_query ("DELETE FROM `tb_obmenkink` where id='1'");
    }

$croncat1=mysql_query("select url from tb_obmenkink where id='1'");
$croncat = mysql_fetch_assoc($croncat1);
foreach ($croncat as $row) {
    if(...) 
    {
        mysql_query ("DELETE FROM `tb_obmenkink` where id=" . (int)$row['id']);
    }
}

$croncat1=mysql_query("select url from tb_obmenkink");
$croncat = mysql_fetch_assoc($croncat1);
$homepage = file_get_contents($croncat);
echo $croncat;
    if(stristr($homepage, '<a href="http://www.site.net/">....</a>') === FALSE) 
    {
        mysql_query ("DELETE FROM `tb_obmenkink`");
    }

mysql_query ("DELETE FROM `tb_obmenkink` where url='$croncat'");

$croncat1=mysql_query("select url from tb_obmenkink");
$croncat = mysql_fetch_assoc($croncat1);
foreach ($croncat as $row) {
    $homepage = file_get_contents($row['url']);
    if(stristr($homepage, '<a href="http://www.site.net/">....</a>') === FALSE) 
    {
        mysql_query ("DELETE FROM `tb_obmenkink` WHERE `url` = '" . $row['url'] . "'");
    }
}