PHP array Key-value Usage example analysis _php tips

The example in this article describes the PHP array key-value usage. Share to everyone for your reference. The specific analysis is as follows:

First look at an array:

<?php
$switching = Array (
  ten,//key = 0
  5  => 6,
  3  => 7,
  ' A ' => 4, one
  ,//Key = 6 (The maximum value of an integer key index in the entire array is 5)
  ' 8 ' => 2,//Key = 8 (String health ' 8 ' converted to 8)
  ' =>,//key = ' 02 ' (note not 2)
  0  => ; 
  The 10 key is given 0, and the value of the 0 key is redefined to
  cover the previous default 0 key value.
Empty array
$empty = Array ();
? >

If printed with Print_r ($switching) The result is:

Array ([0] => [5] => 6 [3] => 7 [A] => 4 [6] => one [8] => 2 [] => 77)

Notice that the two-digit 02 is lined up behind.

I hope this article will help you with your PHP program design.