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{ php }  
  array_csort
date feb.03
update jun.03
code <?php
function array_csort() {        //coded by Ichier2003
    $args = func_get_args();
    $marray = array_shift($args); 
    $msortline = 'return(array_multisort(';
    foreach ($args as $arg) {
        $i++;
        if (is_string($arg)) {
            foreach ($marray as $row) {
                $sortarr[$i][] = $row[$arg];
            }
        } else {
            $sortarr[$i] = $arg;
        }
        $msortline .= '$sortarr['.$i.'],';
    }
    $msortline .= '$marray));';
    eval($msortline);
    return $marray;
}
?>
description sort multidimensional arrays by column

the fine thing is, you can add as many parameters you need, and you can add sort_flags as well (but be shure not to put em into " or ' - took some time for me to get this *g*)

.. waiting this func to be included to the next php-release *gg*
syntax <?php
array = array_multisort(array input [, string key [, SORT_FLAG [, SORT_FLAG]]]...);
?>
explanation $array is the array you want to sort, 'col1' is the name of the column you want to sort, SORT_FLAGS are : SORT_ASC, SORT_DESC, SORT_REGULAR, SORT_NUMERIC, SORT_STRING
you can repeat the 'col',FLAG,FLAG, as often you want, the highest prioritiy is given to the first - so the array is sorted by the last given column first, then the one before ...

_______
example:
in my case the array has it's index as first dimension (i like that for using foreach later):

<?php
    $array[0]['name'] = "Niko";
    $array[0]['age'] = 24;
    $array[0]['town'] = "Berlin";
    $array[1]['name'] = "Dennis";
    $array[1]['age'] = 34;
    $array[1]['town'] = "Berlin";
    $array[2]['name'] = "Oliver";
    $array[2]['age'] = 44;
    $array[2]['town'] = "Aachen";
    $array[3]['name'] = "Andi";
    $array[3]['age'] = 34;
    $array[3]['town'] = "Berlin";
?>
_____________________
use the function like this:

<?php
    $array = array_csort($array,'town','age',SORT_DESC,'name');
?>

here the resulting array would be:

<?php
    $array[0]['name'] = "Oliver";
    $array[0]['age'] = 44;
    $array[0]['town'] = "Aachen";
    $array[1]['name'] = "Andi";
    $array[1]['age'] = 34;
    $array[1]['town'] = "Berlin";
    $array[2]['name'] = "Dennis";
    $array[2]['age'] = 34;
    $array[2]['town'] = "Berlin";
    $array[3]['name'] = "Niko";
    $array[3]['age'] = 24;
    $array[3]['town'] = "Berlin";
?>
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