dbx_sort

(PHP 4 >= 4.0.6, PHP 5 <= 5.0.5, PECL dbx:1.1.0)

dbx_sort — Sort a result from a dbx_query by a custom sort function

Popis

bool dbx_sort ( object $result, string $user_compare_function )

Sort a result from a dbx_query() call with a custom sort function.

Seznam parametrů

result: A result set returned by dbx_query().
user_compare_function: The user-defined comparison function. It must accept two arguments and return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.

Návratové hodnoty

Vrací TRUE při úspěchu, FALSE při selhání.

Příklady

Příklad 373. dbx_sort() example


<?php

function user_re_order($a, $b) 

{

    $rv = dbx_compare($a, $b, "parentid", DBX_CMP_DESC);

    if (!$rv) {

        $rv = dbx_compare($a, $b, "id", DBX_CMP_NUMBER);

    }

    return $rv;

}



$link   = dbx_connect(DBX_ODBC, "", "db", "username", "password")

    or die("Could not connect");



$result = dbx_query($link, "SELECT id, parentid, description FROM tbl ORDER BY id");

    // data in $result is now ordered by id



dbx_sort($result, "user_re_order");

    // data in $result is now ordered by parentid (descending), then by id



dbx_close($link);

?>

Poznámky

Poznámka: It is always better to use ORDER BY SQL clause instead of dbx_sort() if possible.

Viz také

dbx_compare()

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Direct IO Functions

dbx_query

Last updated: Sat, 24 Mar 2007