2013-04-22 05:50:28 +00:00
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<?php defined('SYSPATH') or die('No direct access allowed.');
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/**
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* This class is used to sort multiple dimension arrays.
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*
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* @package lnApp
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2013-10-08 23:24:11 +00:00
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* @category Helpers
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2013-04-22 05:50:28 +00:00
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* @author Deon George
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* @copyright (c) 2009-2013 Deon George
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* @license http://dev.leenooks.net/license.html
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* @uses Style
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*/
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abstract class lnApp_Sort {
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/**
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* Sort a multi dimensional array.
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*
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* @param array Multi demension array passed by reference
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* @param string Comma delimited string of sort keys.
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* @param boolean Whether to reverse sort.
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* @return array Sorted multi demension array.
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*/
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2015-09-29 05:51:56 +00:00
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public static function MAsort(&$data,array $sortby=array(),$rev=0) {
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2013-04-25 00:22:36 +00:00
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// if the array to sort is null
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2015-09-29 05:51:56 +00:00
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if (! $data OR ! $sortby)
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2013-04-22 05:50:28 +00:00
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return;
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2013-04-25 00:22:36 +00:00
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// if the array to sort is null or empty, or our sortby is bad
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# if (! preg_match('/^([a-zA-Z0-9_]+(\([a-zA-Z0-9_,]*\)(->[a-zA-Z0-9])?)?,?)+$/',$sortby) || ! $data)
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# return;
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2013-04-22 05:50:28 +00:00
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$code = '$c=0;';
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2015-09-29 05:51:56 +00:00
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foreach ($sortby as $key) {
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2013-04-22 05:50:28 +00:00
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$code .= 'if (is_object($a) || is_object($b)) {';
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foreach (array('a','b') as $x) {
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$code .= 'if (is_array($'.$x.'->'.$key.')) {';
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$code .= 'asort($'.$x.'->'.$key.');';
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$code .= '$x'.$x.' = array_shift($'.$x.'->'.$key.');';
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2013-11-14 12:22:26 +00:00
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$code .= '} else ';
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2013-04-22 05:50:28 +00:00
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$code .= '$x'.$x.' = $'.$x.'->'.$key.';';
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}
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$code .= 'if ($xa != $xb)';
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if ($rev)
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$code .= 'return ($xa < $xb ? 1 : -1);';
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else
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$code .= 'return ($xa > $xb ? 1 : -1);';
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$code .= '} else {';
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foreach (array('a','b') as $x)
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$code .= '$'.$x.' = array_change_key_case($'.$x.');';
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$key = strtolower($key);
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$code .= 'if ((! isset($a[\''.$key.'\'])) && isset($b[\''.$key.'\'])) return 1;';
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$code .= 'if (isset($a[\''.$key.'\']) && (! isset($b[\''.$key.'\']))) return -1;';
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$code .= 'if ((isset($a[\''.$key.'\'])) && (isset($b[\''.$key.'\']))) {';
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foreach (array('a','b') as $x) {
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$code .= 'if (is_array($'.$x.'[\''.$key.'\'])) {';
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$code .= 'asort($'.$x.'[\''.$key.'\']);';
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$code .= '$x'.$x.' = array_shift($'.$x.'[\''.$key.'\']);';
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2013-11-14 12:22:26 +00:00
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$code .= '} else ';
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2013-04-22 05:50:28 +00:00
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$code .= '$x'.$x.' = $'.$x.'[\''.$key.'\'];';
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}
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$code .= 'if ($xa != $xb)';
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$code .= 'if (is_numeric($xa) && is_numeric($xb)) {';
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if ($rev)
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$code .= 'return ($xa < $xb ? 1 : -1);';
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else
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$code .= 'return ($xa > $xb ? 1 : -1);';
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$code .= '} else {';
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if ($rev)
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$code .= 'if (($c = strcasecmp($xb,$xa)) != 0) return $c;';
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else
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$code .= 'if (($c = strcasecmp($xa,$xb)) != 0) return $c;';
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$code .= '}}}';
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}
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$code .= 'return $c;';
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$result = create_function('$a, $b',$code);
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uasort($data,$result);
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}
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}
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?>
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