NaturalSortByMultiField.php
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<?php
/*
"Contact Form to Database" Copyright (C) 2011-2015 Michael Simpson (email : michael.d.simpson@gmail.com)
This file is part of Contact Form to Database.
Contact Form to Database is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Contact Form to Database is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Contact Form to Database.
If not, see <http://www.gnu.org/licenses/>.
*/
require_once('SortTransform.php');
class NaturalSortByMultiField extends SortTransform {
var $fields = array();
// todo: replace with splat operator when PHP 5.6 is minimal version
function __construct($fieldName0,
$fieldName1 = null,
$fieldName2 = null,
$fieldName3 = null,
$fieldName4 = null,
$fieldName5 = null,
$fieldName6 = null,
$fieldName7 = null,
$fieldName8 = null,
$fieldName9 = null) {
$this->fields[0] = $fieldName0;
$this->fields[1] = $fieldName1;
$this->fields[2] = $fieldName2;
$this->fields[3] = $fieldName3;
$this->fields[4] = $fieldName4;
$this->fields[5] = $fieldName5;
$this->fields[6] = $fieldName6;
$this->fields[7] = $fieldName7;
$this->fields[8] = $fieldName8;
$this->fields[9] = $fieldName9;
}
public function sort($a, $b) {
$result = 0;
for ($idx = 0; $idx <= 9; ++$idx) {
if ($result == 0 && $this->fields[$idx]) {
$result = strnatcmp($a[$this->fields[$idx]], $b[$this->fields[$idx]]);
if ($result != 0) {
break;
}
}
}
return $result;
}
}