Array Related Built-in Functions

This section provides a summary of built-in functions related arrays and some examples of how to use them.

PHP offers a number of interesting built-in functions to work with arrays:

PHP also offers special loop statements to iterate over arrays:

foreach($myArray as $value) {}
foreach($myArray as $key=>$value) {}

Here is a simple script with a "foreach" statement:

#  ArrayLoop.php
#- Copyright (c) All Rights Reserved.
   print "\nLibrary hours:\n";
   $libraryHours = array(
      'Monday - Friday'=>'09:00 - 21:00',
      'Saturday'=>'09:00 - 17:00',
   foreach($libraryHours as $day=>$hours) {
      print "   $day: $hours\n";

Here is the output:

C:\herong> \php\php ArrayLoop.php

Library hours:
   Monday - Friday: 09:00 - 21:00
   Saturday: 09:00 - 17:00
   Sunday: closed

Table of Contents

 About This Book

 Introduction and Installation of PHP 7.3

 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

 Usage Examples of Array Functions

 Interface with Operating System

 Introduction of Class and Object

 Integrating PHP with Apache Web Server

 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

 Managing File Upload

 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

 Parsing and Managing HTML Documents

 Configuring and Sending out Emails

 Image and Picture Processing

 Managing ZIP Archive Files

 Managing PHP Engine and Modules on macOS

 Managing PHP Engine and Modules on CentOS

 Outdated Tutorials


 Full Version in PDF/EPUB