PHP Two-dimensional array sequencing implementation program

First look at the Array_multisort () function

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<?php $ar = Array ( Array ("A", "one, One,", "a"), Array (1, 2, "2", 3, 1) ); Array_multisort ($ar [0], SORT_ASC, sort_string, $ar [1], sort_numeric, SORT_DESC); Var_dump ($ar); ?>

In this example, after sorting, the first array becomes "Ten", 100,100,11, and "a" (sorted in ascending order as a string). The second array will contain 1, 3, "2", 2, 1 (sorted as numbers in descending order).

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Array (2) { [0]=> Array (5) { [0]=> string (2) "10" [1]=> Int (100) [2]=> Int (100) [3]=> Int (11) [4]=> string (1) "a" } [1]=> Array (5) { [0]=> Int (1) [1]=> Int (3) [2]=> string (1) "2" [3]=> Int (2) [4]=> Int (1) } }

The above is not very convenient to use ready-made functions, I would like to recommend a user-defined function

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function Array_sort ($arr, $keys, $type = ' asc ') { $keysvalue = $new _array = Array (); foreach ($arr as $k => $v) { $keysvalue [$k] = $v [$keys]; } if ($type = = ' asc ') { Asort ($keysvalue); }else{ Arsort ($keysvalue); } Reset ($keysvalue); foreach ($keysvalue as $k => $v) { $new _array[$k] = $arr [$k]; } return $new _array; }

Test (it can sort a two-dimensional array by the specified key value, or you can specify ascending or descending sort (default is ascending),

Usage examples:

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$array = Array ( Array (' name ' => ' cell phone ', ' brand ' => ' Nokia ', ' Price ' =>1050), Array (' name ' => ' laptop ', ' brand ' => ' Lenovo ', ' Price ' =>4300), Array (' name ' => ' Razor ', ' Brand ' => ' Philips ', ' Price ' =>3100), Array (' name ' => ' treadmill ', ' brand ' => ' three and pine stone ', ' price ' =>4900), Array (' name ' => ' watch ', ' brand ' => ' Casio ', ' Price ' =>960), Array (' name ' => ' LCD tv ', ' Brand ' => ' Sony ', ' Price ' =>6299), Array (' name ' => ' laser printer ', ' Brand ' => ' hp ', ' Price ' =>1200) ); $ShoppingList = Array_sort ($array, ' price '); Print_r ($ShoppingList);

Bubble method

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function ArraySort ($data, $order = ' asc ') { ASC Ascending desc Descending $temp = Array (); $count = count ($data); if ($count <= 0) return false; Incorrect data passed in if ($order = = ' asc ') { for ($i = 0; $i < $count; $i + +) { for ($j = $count-1; $j > $i; $j-) { if ($data [$j] < $data [$j-1]) { Swap two data locations $temp = $data [$j]; $data [$j] = $data [$j-1]; $data [$j-1] = $temp; } } } } else { for ($i = 0; $i < $count; $i + +) { for ($j = $count-1; $j > $i; $j-) { if ($data [$j] > $data [$j-1]) { $temp = $data [$j]; $data [$j] = $data [$j-1]; $data [$j-1] = $temp; } } } } return $data; } $data = Array (7, 5, 3, 8, 9, 1, 5, 3, 1, 24, 3, 87, 0, 33, 1, 12, 34); Var_dump (ArraySort ($data));//Ascending Echo (' <br> '); Var_dump (ArraySort ($data, ' desc '));//Descending