Table of Contents
Analysis of php array usage rules
Home Backend Development PHP Tutorial Analysis of php array usage rules_PHP tutorial

Analysis of php array usage rules_PHP tutorial

Jul 13, 2016 am 10:05 AM
php main use analyze Case Analysis array article usage of rule

Analysis of php array usage rules

This article mainly introduces the php array usage rules and analyzes the usage of arrays in php with examples. It has certain reference value. Friends who need it can For reference

This article analyzes the usage rules of arrays in PHP with examples. Share it with everyone for your reference. The specific analysis is as follows:

Arrays play a very important role in php. Values ​​such as strings, pictures, numbers, and videos all exist in the form of arrays, so it is necessary to understand the various rules of arrays.

1. Key, value.

Basic form of array:

?

1

2

3

4

array( [key =>]

value

, ...

)

1 2

3

4

array( [key =>]

1

2

3

4

5

6

7

8

9

10

11

12

13

14

<?php

$a = array(-1=>2,

-2=>3,

'01'=>'99.jpg',

8,

'a',

'b'=>TRUE,

NULL,

"",

1.2=>0.5,

);

 

print_r($a);

?>

value , ...

)

key=>value, where the key can only be two types, integer and string. The value can be in various forms. Except for numbers, other values ​​must be enclosed in strings with '' or "". The following example illustrates the rules:

?
1 2 3 4 5 6
7 8 9 10 11 12 13 14
<?php<🎜> <🎜>$a = array(-1=>2, -2=>3, '01'=>'99.jpg', 8, 'a', 'b'=>TRUE, NULL, "", 1.2=>0.5, ); print_r($a); ?>
Output result: Array ( [-1] => 2 [-2] => 3 [01] => 99.jpg [0] => 8 [1] => 0.5 => 1 [2] => [3] => ) I hope this article will be helpful to everyone’s PHP programming design. http://www.bkjia.com/PHPjc/961778.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/961778.htmlTechArticleAnalysis of PHP array usage rules This article mainly introduces the PHP array usage rules and analyzes the usage of arrays in PHP with examples. , has certain reference value, friends in need can refer to this article...
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article Tags

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

CakePHP Date and Time

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

CakePHP File upload

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

CakePHP Project Configuration

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

CakePHP Routing

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

Discuss CakePHP

CakePHP Quick Guide CakePHP Quick Guide Sep 10, 2024 pm 05:27 PM

CakePHP Quick Guide

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

How To Set Up Visual Studio Code (VS Code) for PHP Development

See all articles