Re: sorting in array
| From: | Paul Novitski | Date: | Mon, 31 Jul 2006 06:57:29 +0000 |
| Subject: | Re: sorting in array | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-239892@lists.php.net to get a copy of this message | ||
At 10:31 PM 7/30/2006, weetat wrote:
I have problem when doing usort() when 'country' = '', i would like to display records where country = '' last. Any ideas how to do that ? ...
$arraytest= array(
array
(
'country' => '',
)
,
array
(
'country' => 'Thailand',
)
...
function cmpcountry($a, $b) {Weetat, You can sort the blank fields to the end simply by forcing their evaluated values in your usort callback function: function cmpcountry($a, $b) {$country1 = $a['country']; $country2 = $b['country'];return ($country1 < $country2) ? -1 : 1;}
$country1 = $a['country'];
$country2 = $b['country'];
if ($country1 == '') $country1 = "zzzzzzz";
if ($country2 == '') $country2 = "zzzzzzz";
return ($country1 < $country2) ? -1 : 1;} ...or, using ternary syntax: function cmpcountry($a, $b) {
$country1 = ($a['country'] == '') ? "zzzzzzz" : $a['country'];
$country2 = ($b['country'] == '') ? "zzzzzzz" : $b['country'];
return ($country1 < $country2) ? -1 : 1;} Regards, Paul