Problems with sort function...

[chrisdee]

Im having problems with a sort function in the script below. What i want it to do is to sort after lastname or firstname when I click on the description lastname or firstname in the top of the table. Help with this is greatly apreciated. Thank you.

<? 
echo "<table border=1 cellpadding=4 cellspacing=0>"; 

$heading = array('lastname','firstname'); 
echo "<tr>"; 
foreach($heading as $value) { 
echo "<td><a href=".$_SERVER['PHP_SELF']."?sorting=$value>".ucfirst($value)."</td>"; 
} 
echo "</tr>"; 

function sorting($a, $b) { 
if ($a == $b) return 0; 
else return ($a > $b); 
} 

$array = array ( 
"Olsson" => "Andrew", 
"Gustavsson" => "Paul", 
"Anderson" => "Morten", 
"Hansen" => "Hanna", 
"Carlton" => "Maria", 
"Henriksen" => "Mona", 
"Tangstad" => "Tina" 
); 
uksort($array,'sorting'); 

foreach ($array as $lastname => $firstname) { 
print "<tr><td>$lastname</td><td>$firstname</td></tr>"; 
} 

echo "</table>"; 
?> 

[Installer]

// Replace this:
uksort($array,'sorting');

// with this:
if (isset($_GET['sorting']) && ($_GET['sorting'] == 'firstname')) {
    asort($array);
} else { 
    uksort($array, 'sorting');
}

[chrisdee]

Perfect!
It works wonderful.
Thank you very much.

[chrisdee]

What do i do it if I want to add eg two rows (phonenumber and age) ?

[chrisdee]

How do I sort the table below by the column headings ?:

<? 
echo "<table border=1 cellpadding=4 cellspacing=0>"; 

$heading = array('lastname','firstname','phone','age'); 
echo "<tr>"; 
foreach($heading as $value) { 
echo "<td><a href=".$_SERVER['PHP_SELF']."?sorting=$value>".ucfirst($value)."</td>"; 
} 
echo "</tr>"; 

function sorting($a, $b) { 
if ($a == $b) return 0; 
else return ($a > $b); 
} 

$array = array ( 
"Olsson;Andrew;90807060;31", 
"Gustavsson;Paul;88332233;28", 
"Anderson;Morten;22332233;24", 
"Hansen;Hanna;44556677;22", 
"Carlton;Maria;22113322;21", 
"Henriksen;Mona;66778899;25", 
"Tangstad;Tina;11223344;19" 
); 
uksort($array,'sorting'); 

foreach ($array as $name) { 
$part = split(";",$name); 
print "<tr><td>$part[0] </td><td>$part[1]</td><td>$part[2]</td><td>$part[3]</td></tr>"; 
} 

echo "</table>"; 
?>

[Installer]

$array = array('Olsson;Andrew;90807060;31',  

               'Gustavsson;Paul;88332233;28',  

               'Anderson;Morten;22332233;24',  

               'Hansen;Hanna;44556677;22',  

               'Carlton;Maria;22113322;21',  

               'Henriksen;Mona;66778899;25',  

               'Tangstad;Tina;11223344;19');  

$heading = array('lastname', 'firstname', 'phone', 'age');

foreach ($array as $key => $val) {
    $tmp = explode(';', $val);
    foreach ($heading as $h_key => $h_val) {
        $new_arr[$key][$h_val] = $tmp[$h_key];
    }
}
if (isset($_GET['sorting'])) {
    masort($new_arr, $_GET['sorting']);
}

echo '<table border="1" cellpadding="4" cellspacing="0"><tr>';  

foreach($heading as $value) {  

    echo '<td><a href="' . $_SERVER['PHP_SELF'] . 
         '?sorting=' . $value . '">' . 
         ucfirst($value) . '</a></td>';  

}  

echo '</tr>';  

foreach ($new_arr as $val) {  

    echo '<tr>';
    foreach ($val as $item) {
        echo '<td>' . $item . '</td>';  

    }
    echo '</tr>';
}  

echo '</table>';  

// masort() function courtesy of rlynch
// posted to php.net users' notes for uasort()
// php.net/manual/en/function.uasort.php
function masort(&$data, $sortby)
{
    static $sort_funcs = array();
    if (empty($sort_funcs[$sortby])) {
        $code = "\$c=0;";
        foreach (split(',', $sortby) as $key) {
            $array = array_pop($data);
            array_push($data, $array);
            if(is_numeric($array[$key])) {
                $code .= "if ( \$c = ((\$a['$key'] == \$b['$key']) 
                          ? 0: ((\$a['$key'] < \$b['$key']) 
                          ? -1 : 1 )) ) return \$c;";
            } else {
                $code .= "if ( (\$c = strcasecmp(\$a['$key'],
                          \$b['$key'])) != 0 ) return \$c;\n";
            }
        }
        $code .= 'return $c;';
        $sort_func = $sort_funcs[$sortby] = create_function('$a, $b', $code);
    } else {
        $sort_func = $sort_funcs[$sortby];
    }
    $sort_func = $sort_funcs[$sortby];
    uasort($data, $sort_func);
}

[chrisdee]

Wow.

What can I say. Im not worthy.
Thank you very much.

This is by far the best PHP forum i know of.