PHP Tukwata Koguna

在本教程之前的章节中，我们已经知道数组是一种数/值对的简单列表。

不过，有时您希望用一个以上的键存储值。

可以用多维数组进行存储。

PHP - 多维数组

多维数组指的是包含一个或多个数组的数组。

PHP 能理解两、三、四或五级甚至更多级的多维数组。不过，超过三级深的数组对于大多数人难于管理。

Iyali:Dimention na array na a ka na iya nuna kai kai wakilci ki na iya zama kai a zama.

  • Doni kai 2-dimentional array, ka na iya nuna kai daidai index dona a zama kai wakilci ki.
  • Doni kai 3-dimentional array, ka na iya nuna kai daidai index dona a zama kai wakilci ki.

PHP - 2-dimentional array

2-dimentional array ne array na array (3-dimentional array ne array na array na array).

Kwai, kama ana kai kara karfe na kira taba na:

Branda Dukuka Rarrabawa
Volvo 33 20
BMW 17 15
Saab 5 2
Land Rover 15 11

Aminu aza na dukiya 2-dimentional dona anoma dukiya na taba ta, kamar irin din:

$cars = array
  (
  array("Volvo",22,18),
  array("BMW",15,13),
  array("Saab",5,2),
  array("Land Rover",17,15)
  );

Now this two-dimensional array contains four arrays and it has two indices (subscripts): row and column.

To access elements of the $cars array, we must use two indices (row and column):

Example

<?php
echo $cars[0][0].": Inventory:".$cars[0][1].", Sales:".$cars[0][2].".<br>";
echo $cars[1][0].": Inventory:".$cars[1][1].", Sales:".$cars[1][2].".<br>";
echo $cars[2][0].": Inventory:".$cars[2][1].", Sales:".$cars[2][2].".<br>";
echo $cars[3][0].": Inventory:".$cars[3][1].", Sales:".$cars[3][2].".<br>";
?>

Run Instance

We can also use another For loop inside a For loop to get elements from the $cars array (we still need to use two indices):

Example

<?php
for ($row = 0; $row < 4; $row++) {
  echo "<p><b>Row number $row</b></p>";
  echo "<ul>";
  for ($col = 0; $col < 3; $col++) {
    echo "<li>".$cars[$row][$col]."</li>";
  }
  echo "</ul>";
}
?>

Run Instance