Detailed explanation of the steps to convert an array using foreach in PHP

This time I will bring you PHP usageforeachconversionarraydetailed steps, what are the precautions for using foreach in PHP to convert arrays, the following is a practical case , let’s take a look.

Requirements:

Convert two-dimensional array$arr ​​to 'time' and 'type' Standard, 'data' is a two-dimensional array of values;

Original array:

$arr = array(
   0 => array(
    'data' => 100,
    'type' => 1,
    'time' => '2018-01-26',
   ),
   1 => array(
    'data' => 200,
    'type' => 2,
    'time' => '2018-01-26',
   ),
   2 => array(
    'data' => 300,
    'type' => 2,
    'time' => '2018-01-27',
   ),
   3 => array(
    'data' => 400,
    'type' => 3,
    'time' => '2018-01-27',
   ),
   4 => array(
    'data' => 500,
    'type' => 4,
    'time' => '2018-01-28',
   ),
  );

Conversion:

foreach ($arr as $key => $value) {
 $change[$value['time']][$value['type']] = $value['data'];
}

Result:

array(3) {
 ["2018-01-26"] => array(2) {
 [1] => int(100)
 [2] => int(200)
 }
 ["2018-01-27"] => array(2) {
 [2] => int(300)
 [3] => int(400)
 }
 ["2018-01-28"] => array(1) {
 [4] => int(500)
 }
}

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to php Chinese Other related articles online!

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