【www.bbyears.com--php函数】
昨天要排序数组的时候发现了，要按时间排序，但是php并没有内设这个函数，所以在网上找到了这个代码，第一个参数为数组，第二个是要排序的元素，第三个为排序方式，
下面就是php 二维数组排序的代码
function arraySort($arr, $keys, $type = "asc") {
$keysvalue = $new_array = array();
foreach ($arr as $k => $v){
$keysvalue[$k] = $v[$keys];
}
$type == "asc" ? asort($keysvalue) : arsort($keysvalue);
reset($keysvalue);
foreach ($keysvalue as $k => $v) {
$new_array[$k] = $arr[$k];
}
return $new_array;
}
$arr[] = array("name"=>"1","time"=>1) ;
array_multisort(array1,sorting order, sorting type,array2,array3..）是对多个数组或多维数组进行排序的函数。
function my_sort($arrays,$sort_key,$sort_order=SORT_ASC,$sort_type=SORT_NUMERIC ){
if(is_array($arrays)){
foreach ($arrays as $array){
if(is_array($array)){
$key_arrays[] = $array[$sort_key];
}else{
return false;
}
}
}else{
return false;
}
array_multisort($key_arrays,$sort_order,$sort_type,$arrays);
return $arrays;
}
$person = array(
array("id"=>1,"name"=>"fj","weight"=>100,"height"=>180),
array("id"=>2,"name"=>"tom","weight"=>53,"height"=>150),
array("id"=>3,"name"=>"jerry","weight"=>120,"height"=>156),
array("id"=>4,"name"=>"bill","weight"=>110,"height"=>190),
array("id"=>5,"name"=>"linken","weight"=>80,"height"=>200),
array("id"=>6,"name"=>"madana","weight"=>95,"height"=>110),
array("id"=>7,"name"=>"jordan","weight"=>70,"height"=>170)
);
var_dump($person);
$person = my_sort($person,"name",SORT_ASC,SORT_STRING);
var_dump($person);
$person = my_sort($person,"weight");
var_dump($person);
?>
结果如下：
array (size=7)
0 =>
array (size=4)
"id" => int 1
"name" => string "fj" (length=2)
"weight" => int 100
"height" => int 180
1 =>
array (size=4)
"id" => int 2
"name" => string "tom" (length=3)
"weight" => int 53
"height" => int 150
2 =>
array (size=4)
"id" => int 3
"name" => string "jerry" (length=5)
"weight" => int 120
"height" => int 156
3 =>
array (size=4)
"id" => int 4
"name" => string "bill" (length=4)
"weight" => int 110
"height" => int 190
4 =>
array (size=4)
"id" => int 5
"name" => string "linken" (length=6)
"weight" => int 80
"height" => int 200
5 =>
array (size=4)
"id" => int 6
"name" => string "madana" (length=6)
"weight" => int 95
"height" => int 110
6 =>
array (size=4)
"id" => int 7
"name" => string "jordan" (length=6)
"weight" => int 70
"height" => int 170
array (size=7)
0 =>
array (size=4)
"id" => int 4
"name" => string "bill" (length=4)
"weight" => int 110
"height" => int 190
1 =>
array (size=4)
"id" => int 1
"name" => string "fj" (length=2)
"weight" => int 100
"height" => int 180
2 =>
array (size=4)
"id" => int 3
"name" => string "jerry" (length=5)
"weight" => int 120
"height" => int 156
3 =>
array (size=4)
"id" => int 7
"name" => string "jordan" (length=6)
"weight" => int 70
"height" => int 170
4 =>
array (size=4)
"id" => int 5
"name" => string "linken" (length=6)
"weight" => int 80
"height" => int 200
5 =>
array (size=4)
"id" => int 6
"name" => string "madana" (length=6)
"weight" => int 95
"height" => int 110
6 =>
array (size=4)
"id" => int 2
"name" => string "tom" (length=3)
"weight" => int 53
"height" => int 150
array (size=7)
0 =>
array (size=4)
"id" => int 2
"name" => string "tom" (length=3)
"weight" => int 53
"height" => int 150
1 =>
array (size=4)
"id" => int 7
"name" => string "jordan" (length=6)
"weight" => int 70
"height" => int 170
2 =>
array (size=4)
"id" => int 5
"name" => string "linken" (length=6)
"weight" => int 80
"height" => int 200
3 =>
array (size=4)
"id" => int 6
"name" => string "madana" (length=6)
"weight" => int 95
"height" => int 110
4 =>
array (size=4)
"id" => int 1
"name" => string "fj" (length=2)
"weight" => int 100
"height" => int 180
5 =>
array (size=4)
"id" => int 4
"name" => string "bill" (length=4)
"weight" => int 110
"height" => int 190
6 =>
array (size=4)
"id" => int 3
"name" => string "jerry" (length=5)
"weight" => int 120
"height" => int 156
这里的重点就是，先把要排序的key存到一个一维数组中，然后就可以使用array_multisort()这个函数，将数组按照key进行排序了，当然，这里的排序你完全可以不适用array_multisort()这个函数，仅仅通过foreach遍历也能达到这个效果，但是既然php开发者给我们提供了更好的办法，我们就可以省去不必要的麻烦了