PHP-CL Core: PHP 8 for Developers

This repository is designed to provide examples for the PHP 8 for PHP Developers course. For more information see https://phptraining.net/courses/php8

Local Setup Procedure

1. Install Docker
   • If you are running Windows, start here: https://docs.docker.com/docker-for-windows/install/.
   • If you are on a Mac, start here: https://docs.docker.com/docker-for-mac/install/.
   • If you are on Linux, have a look here: https://docs.docker.com/engine/install/.
2. Install Docker Compose. For all operating systems, start here: https://docs.docker.com/compose/install/.
3. Install the source code associated with this book onto your local computer.
   • If you have installed git, use the following command:

git clone https://github.com/phpcl/phpcl_core_php8_developers.git

* Otherwise, you can simply download and unzip from this URL: [https://github.com/phpcl/phpcl_core_php8_developers/archive/master.zip](https://github.com/phpcl/phpcl_core_php8_developers/archive/master.zip)
* And then unzip into a folder you create which we refer to as `/path/to/repo` in this guide

4. Build docker container associated with this book online:
   • From your local computer, open a command prompt (terminal window).
   • Change directory to /path/to/repo.
   • First time only, open a terminal window/command prompt and issue this command to build the environment:

cd /path/to/repo
docker-compose build

* Please note that the initial build might take up to 15 minutes to complete depending on your connection speed.

5. Issue this command the bring the container online:
   • From your local computer, open a command prompt (terminal window):

cd /path/to/repo
docker-compose up -d

* Note that this will also do `build` if you prefer to skip step 4

6. To access the running docker container web server:
   • Open the browser on your local computer
   • To access PHP 8 enter this URL: http://localhost:8888
   • To access PHP 7 enter this URL: http://localhost:7777
7. To open a command shell into the running docker container:
   • From your local computer, open a command prompt (terminal window).
   • To access PHP 7: docker exec -it php8_tips_php7 /bin/bash
   • To access PHP 8: docker exec -it php8_tips_php8 /bin/bash
8. When you are finished working with the container, bring it offline using the following command:

cd /path/to/repo
docker-compose down

Usage Information

Sample database:

• Database Name: phpcl
• Database User: phpcl
• Database Password: password
• Database Access via phpMyAdmin:
  • PHP 7: http://localhost:7777/phpmyadmin
  • PHP 8: http://localhost:8888/phpmyadmin

ERRATA

• Slide: Database Extension Gotchas
  • Switch refs for MySQLi and PgSQL
• Slide: GD Extension Gotchas
  • the --with-png-dir=DIR option has been removed
  • need libpng
• http://localhost:8888/run.php?file=core_ext_reflection_signature.php
  • results are identical in 7 and 8: ???
• The example that uses mb_??? and accepts an ASCII code point
  • results are identical in 7 and 8: ???
• Slide: Zip/ZipArchive Extension Gotchas
  • S/be the following methods have been added (not functions!)
• slide: s/be ZipArchive class (not extension)
• Slide: Static Return Type
  • SQL INSERT statement
• Example lacking ";": core_imp_deref_str.php
• Slide: Illegal Sort Functions
  • Code block, "illegal" callback should have ">"
  • "<=>" is legal!
• core_ext_tokenizer.php
  • Not working
• core_ext_datetime_zone.php
  • Appears not to recognize the ST timezone
• Slide: Deprecations: Enchant
  • Needs formatting improvement