Php array key value usage instance Analysis _ PHP Tutorial

Php array key-value usage instance analysis. Php array key-value usage example analysis this article mainly introduces php array key-value usage. The example analyzes the principle of automatic system allocation of key-value in the php array and its usage skills, some examples of php array key value usage

This article mainly introduces the php array key value usage. The example analyzes the principle and usage skills of the system Auto-distribution of the key value in the php array, which has some reference value. For more information, see

This example describes how to use the php array key value. Share it with you for your reference. The specific analysis is as follows:

First look at an array:

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

$ Switching = array ( 10, // key = 0 5 => 6, 3 => 7, 'A' => 4, 11, // key = 6 (the maximum value of the integer key index in the entire array is 5) '8' => 2, // key = 8 (string Jian '8' is converted to 8) '02' => 77, // key = '02' (note not 2) 0 => 12 /* The key with the first par value of 10 is assigned 0, and the value of the first 0 key is redefined as 12, This overwrites the previous default 0 key value */ ); // Empty array $ Empty = array (); ?>

If printed using print_r ($ switching), the result is:

Array ([0] => 12 [5] => 6 [3] => 7 [a] => 4 [6] => 11 [8] => 2 [02] => 77)

Note that the two-digit 02 values are placed at the backend.

I hope this article will help you with php programming.

This article mainly introduces the usage of php array key values. The example analyzes the principle and usage of the system Auto-distribution of the key values in the php array. it has some reference...