Migrate Old Scripts to New PHP Release

Provides a tutorial example on how to migrate old PHP scripts to PHP new releases.

If you are running old PHP scripts on a newer release of the PHP engine, you may see many errors, because some modules or functions are deprecated or removed. Here is a list of them of their replacements.

eregi('...', ...);          --> preg_match(('/.../i', ...);
mysql_*()                   --> mysqli_*()
date(): ... not safe ...    --> date_default_timezone_set('Europe/Paris');

Table of Contents

 About This Book

 Introduction to Linux Systems

 Cockpit - Web Portal for Administrator

 Process Management

 Files and Directories

 Users and Groups

 File Systems

 Installing CentOS

 SELinux - Security-Enhanced Linux

 Network Connection on CentOS

 Software Package Manager on CentOS - DNF and YUM

 Running Apache Web Server (httpd) on Linux Systems

Running PHP Scripts on Linux Systems

 Install and Manage PHP Packages on CentOS

 "php -i" - Dump PHP Environment Information

 Install and Manage PHP Modules on CentOS

 Files Used in PHP "include" Statements

 Publish PHP Scripts on Apache Web Server

 Dump PHP/Apache Environment Information

 Change PHP Configuration Settings

 Apache PHP file_put_contents() Permission Denied

 SELinux Security Context on /var/www/html

Migrate Old Scripts to New PHP Release

 Running MySQL Database Server on Linux Systems

 Running Python Scripts on Linux Systems

 vsftpd - Very Secure FTP Daemon

 Postfix - Mail Transport Agent (MTA)

 Dovecot - IMAP and POP3 Server

 Email Client Tools - Mail User Agents (MUA)

 GCC - C/C++ Compiler

 Conda - Environment and Package Manager

 Tools and Utilities


 Full Version in PDF/EPUB