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PHP Manual :: dbx_sort



dbx_query || ODBC || dbx Functions || PHP Manual

(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

Description

bool dbx_sort ( object $result , string $user_compare_function )

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

Parameters

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.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 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);
?>

Notes

Note:

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

See Also



dbx_query || ODBC || dbx Functions || PHP Manual
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