Search in all column in the table fields

<?php
$conn = @mysql_connect( 'localhost','root' ,'')
or die( mysql_errno().': '.mysql_error().NL );
$db=mysql_select_db('kiwi',$conn);
$result = mysql_query("SHOW COLUMNS FROM $table");
if (mysql_num_rows($result) > 0)
{
$i=0;
while ($row = mysql_fetch_array($result))
{
if($i==0)
{

echo $q="select * from $table where ".$row[0]."=".$condition;
}
else
{
$q.=" or ".$row[0]."=".$condition;
}
$i++;
}
}
echo 'a';

echo $q;

?>