Php two-dimensional array sorting Implementation Program-PHP source code

In php, we can directly use the array_multisort () function to sort two-dimensional arrays. At the same time, I have also added some custom 2D array sorting codes for your reference. In php, we can directly use the array_multisort () function to sort two-dimensional arrays. At the same time, I have also added some custom 2D array sorting codes for your reference.

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First, let's look at the array_multisort () function.

The Code is as follows:
$ Ar = array ( Array ("10", 11,100,100, ""), 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 will become "10", 100,100, 11, "a" (sorted in ascending order as strings ). The second array will contain 1, 3, "2", 2, 1 (arranged in descending order as numbers ).

The Code is as follows:
Array (2 ){ [0] => array (5 ){ [0] => string (2) "10" [1] => int (100) [2] => int (100) [3] => int (11) [4] => string (1) "" } [1] => array (5 ){ [0] => int (1) [1] => int (3) [2] => string (1) "2" [3] => int (2) [4] => int (1) } }

It is not very convenient to use existing functions. I will recommend a user-defined function.

The Code is as follows:
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 two-dimensional arrays by specified key values, or specify the ascending or descending sort method (the default is ascending ),

Usage example:

The Code is as follows:

$ Array = array ( Array ('name' => 'phone', 'brand' => 'nokia ', 'price' => 1050 ), Array ('name' => 'laptop ', 'brand' => 'lenovo', 'price' => 4300 ), Array ('name' => 'shares', 'brand' => 'phillips', 'price' => 3100 ), Array ('name' => 'treadmill ', 'brand' => 'three', 'price' => 4900 ), Array ('name' => 'Watch ', 'brand' => 'case', '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

The Code is as follows:

Function arraysort ($ data, $ order = 'asc '){ // Asc ascending desc descending $ Temp = array (); $ Count = count ($ data ); If ($ count <= 0) Return false; // the input data is incorrect. If ($ order = 'asc '){ For ($ I = 0; $ I <$ count; $ I ++ ){ For ($ j = $ count-1; $ j> $ I; $ j --){ If ($ data [$ j] <$ data [$ j-1]) { // Exchange 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, 54, 66, 32 ); Var_dump (arraysort ($ data); // ascending Echo (' '); Var_dump (arraysort ($ data, 'desc'); // descending order