Creating Arrays - Examples

This section provides a tutorial example on how to create arrays in different ways.

Here is a tutorial example PHP script to show you some of array rules described in the previous section:

<?php # ArrayTest.php
#- Copyright (c) 2015, HerongYang.com, All Rights Reserved.
# 
   print "\nLibrary hours:\n";
   $libraryHours = array(
      'Monday - Friday'=>'09:00 - 21:00', 
      'Saturday'=>'09:00 - 17:00', 
      'Sunday'=>'closed');
   print_r($libraryHours);
#
   print "\nPrime numbers:\n";
   $primeNumbers = array(3, 5, 7, 11);
   $primeNumbers[] = 13;
   print_r($primeNumbers);
#
   print "\nFruits:\n";
   $fruits[] = 'Apple';
   $fruits[] = 'Orange';
   $fruits[''] = 'Peach';
   $fruits[''] = 'Banana';
   $fruits['G'] = 'Grape';
   $fruits['7'] = 'Pear';
   $fruits[] = 'Fig';
   print_r($fruits);
#
   print "\nFruits array modified:\n";
   unset($fruits[1]);
   $fruits[1] = 'Orange';
   print_r($fruits);
?>

If you run this sample script, you should get:

Library hours:
Array
(
    [Monday - Friday] => 09:00 - 21:00
    [Saturday] => 09:00 - 17:00
    [Sunday] => closed
)

Prime numbers:
Array
(
    [0] => 3
    [1] => 5
    [2] => 7
    [3] => 11
    [4] => 13
)

Fruits:
Array
(
    [0] => Apple
    [1] => Orange
    [] => Banana
    [G] => Grape
    [7] => Pear
    [8] => Fig
)

Fruits array modified:
Array
(
    [0] => Apple
    [] => Banana
    [G] => Grape
    [7] => Pear
    [8] => Fig
    [1] => Orange
)

The behavior of the $fruits array is very interesting. Review it carefully.

Last update: 2015.

Table of Contents

 About This Book

 Introduction and Installation of PHP 7.0

 PHP Script File Syntax

 PHP Data Types and Data Literals

 Variables, References, and Constants

 Expressions, Operations and Type Conversions

 Conditional Statements - "if" and "switch"

 Loop Statements - "while", "for", and "do ... while"

 Function Declaration, Arguments, and Return Values

Arrays - Ordered Maps

 What Is an Array?

Creating Arrays - Examples

 Array Related Built-in Functions

 Configuring and Sending out Emails

 Retrieving Information from HTTP Requests

 Creating and Managing Sessions in PHP Scripts

 Sending and Receiving Cookies in PHP Scripts

 Controlling HTTP Response Header Lines in PHP Scripts

 MySQL Server Connection and Access Functions

 Functions to Manage Directories, Files and Images

 SOAP Extension Function and Calling Web Services

 SOAP Server Functions and Examples

 Localization Overview of Web Applications

 Using Non-ASCII Characters in HTML Documents

 Using Non-ASCII Characters as PHP Script String Literals

 Receiving Non-ASCII Characters from Input Forms

 "mbstring" Extension and Non-ASCII Encoding Management

 Managing Non-ASCII Character Strings with MySQL Servers

 Introduction of Class and Object

 Integrating PHP with Apache Web Server

 Outdated Tutorials

 References

 PDF Printing Version