106 lines
2.9 KiB
PHP
106 lines
2.9 KiB
PHP
<?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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* @subpackage Sort
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* @category Helpers
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* @author Deon George
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* @copyright (c) 2010 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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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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public static function masort(&$data,$sortby,$rev=0) {
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// if the array to sort is null or empty
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if (! $data)
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return;
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static $MASORT_CACHE = array();
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if (empty($MASORT_CACHE[$sortby])) {
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$code = "\$c=0;\n";
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foreach (explode(',',$sortby) as $key) {
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$code .= "if (is_object(\$a) || is_object(\$b)) {\n";
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$code .= " if (is_array(\$a->$key)) {\n";
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$code .= " asort(\$a->$key);\n";
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$code .= " \$aa = array_shift(\$a->$key);\n";
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$code .= " } else\n";
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$code .= " \$aa = \$a->$key;\n";
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$code .= " if (is_array(\$b->$key)) {\n";
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$code .= " asort(\$b->$key);\n";
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$code .= " \$bb = array_shift(\$b->$key);\n";
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$code .= " } else\n";
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$code .= " \$bb = \$b->$key;\n";
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$code .= " if (\$aa != \$bb)";
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if ($rev)
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$code .= " return (\$aa < \$bb ? 1 : -1);\n";
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else
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$code .= " return (\$aa > \$bb ? 1 : -1);\n";
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$code .= "} else {\n";
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$code .= " \$a = array_change_key_case(\$a);\n";
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$code .= " \$b = array_change_key_case(\$b);\n";
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$key = strtolower($key);
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$code .= " if ((! isset(\$a['$key'])) && isset(\$b['$key'])) return 1;\n";
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$code .= " if (isset(\$a['$key']) && (! isset(\$b['$key']))) return -1;\n";
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$code .= " if ((isset(\$a['$key'])) && (isset(\$b['$key']))) {\n";
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$code .= " if (is_array(\$a['$key'])) {\n";
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$code .= " asort(\$a['$key']);\n";
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$code .= " \$aa = array_shift(\$a['$key']);\n";
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$code .= " } else\n";
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$code .= " \$aa = \$a['$key'];\n";
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$code .= " if (is_array(\$b['$key'])) {\n";
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$code .= " asort(\$b['$key']);\n";
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$code .= " \$bb = array_shift(\$b['$key']);\n";
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$code .= " } else\n";
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$code .= " \$bb = \$b['$key'];\n";
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$code .= " if (\$aa != \$bb)\n";
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$code .= " if (is_numeric(\$aa) && is_numeric(\$bb)) {\n";
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if ($rev)
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$code .= " return (\$aa < \$bb ? 1 : -1);\n";
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else
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$code .= " return (\$aa > \$bb ? 1 : -1);\n";
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$code .= " } else {\n";
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if ($rev)
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$code .= " if ( (\$c = strcasecmp(\$bb,\$aa)) != 0 ) return \$c;\n";
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else
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$code .= " if ( (\$c = strcasecmp(\$aa,\$bb)) != 0 ) return \$c;\n";
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$code .= " }\n";
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$code .= " }\n";
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$code .= "}\n";
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}
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$code .= 'return $c;';
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$MASORT_CACHE[$sortby] = create_function('$a, $b',$code);
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}
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uasort($data,$MASORT_CACHE[$sortby]);
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}
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}
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?>
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