PHP array using rule parsing, php array rule _php Tutorial

PHP arrays using rule parsing, PHP array rules

This paper analyzes the rules of using arrays in PHP. Share to everyone for your reference. The specific analysis is as follows:

The array is in the gray-most important position in PHP. strings, pictures, digital, video equivalents exist in the form of arrays, so it is necessary to understand the various rules of the array.

1, key, value.

The basic form of an array:

Array ([Key =>]value   , ...)

Key=>value, where key can only be two, integer, String. While value can be in various forms, except for numbers, all other values must be "or" to enclose the string. The following example illustrates the rule:

<?php  $a = Array ( -1=>2,         -2=>3, ' 99.jpg ', ' 8 ', '           a ',     ' B ' =>true,         NULL,            "",      1.2=>0.5,        );       Print_r ($a);? >

Output: Array ([-1] = 2 [-2] = 3 [] = 99.jpg [0] = 8 [1] = 0.5 = 1 [2] = [3] = =)

I hope this article is helpful to everyone's PHP programming.

http://www.bkjia.com/PHPjc/961388.html www.bkjia.com true http://www.bkjia.com/PHPjc/961388.html techarticle PHP array using rule analysis, PHP array rules This article analyzes the use of arrays in PHP rules. Share to everyone for your reference. The specific analysis is as follows: The array in PHP is in the gray weight ...

