Hoe to call function in PHP

[Matjaz Toplisek]

I have function to show table from my database.
Does somebody knows how to call function?
I hope you can help

Code:
/* function*/
error_reporting(0);
function tab_out($result)
{
$stpolj=mysql_num_fields($result);
$sirina=100/$stpolj."%";
echo "<table width=100% border=0 cellpadding='2' cellspacing='2'>";
echo "<tr bgcolor=#D0D0D0>";
for ($i=0;$i<$stpolj;$i++)
{
echo "<th width='$sirina'><font size='1'> ";
echo mysql_field_name($result,$i);
echo "</font> </th>";
}
echo "</tr>";
echo "<tr>";
$num = mysql_num_rows($result);
for ($j = 0; $j < $num; $j++)
{
$row = mysql_fetch_array($result);
echo "<table width=100% border=0 cellpadding='2' cellspacing='2'>";
echo "<tr bgcolor=#00FFFF>";
for ($k=0;$k<$stpolj;$k++)
{
$fn=mysql_field_name($result,$k);
echo " <td width='$sirina'> <font size='1'> $row[$fn] </font> </td> " ;
}
echo "<tr>";
echo "</tr>";
}
echo "</table>";
}
function send_sql($db, $sql)
{
if (! $res=mysql_query($db, $sql)){
echo mysql_error();
exit;
}
return $res;
}

$sql = "select * from tecaji";
If ($res=send_sql($db,$sql)) {
echo "Poizvedba: <br> $sql"; }
tab_out($res);