PHP using the foreach Transform array steps

This time for you to bring PHP to use the foreach Transformation array step-by-bit, PHP using a foreach conversion array of considerations, the following is the actual case, together to see.

Requirements:

The two-dimensional array $arr is converted to a two-dimensional array with ' time ' and ' type ' as the subscript and ' data ' values;

Original array:

$arr = Array (   0 = = Array (    ' data ' = =,    ' type ' = = 1, ' time ' = '    2018-01-26 ',   ),   1 =& Gt Array (    ' data ' = $,    ' type ' = = 2,    ' time ' = ' 2018-01-26 ',   ),   2 = = Array (    ' Data ' + ',    ' type ' = 2,    ' time ' = ' 2018-01-27 ', ' 3 ' =   Array (    ' data ' = 400,    ' type ' = 3,    ' time ' = ' 2018-01-27 ', '   4 = = Array ' ('    data ' = ' = ', '    type ' =& Gt 4,    ' time ' = ' 2018-01-28 ',   )  ;

Transformation:

foreach ($arr as $key = + $value) {$change [$value [' Time ']][$value [' type ']] = $value [' Data '];}

Results:

Array (3) {["2018-01-26"] = = Array (2) {[1] = = Int (+) [2] = Int (+)} ["2018-01-27"] = + Array (2) {[2] =&G T int (+) [3] = = Int (+)} ["2018-01-28"] = = Array (1) {[4] = Int (500)}}

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