PHP Tutorial [BEST]
This tutorial walks you through the process of launching an RDS DB instance external to AWS Elastic Beanstalk, and configuring a high-availability environment running a PHP application to connect to it.
This guide is adapted from a tutorial by Stephane Eranian at Google, with contributions from Eric Gouriou, Tipp Moseley and Willem de Bruijn. The original content imported into wiki.perf.google.com is made available under the CreativeCommons attribution sharealike 3.0 license.
There are many tutorials on PDO already, but unfortunately, most of them fail to explain the real benefits of PDO, or even promote rather bad practices. The only two exceptions are phptherightway.com and hashphp.org, but they miss a lot of important information. As a result, half of PDO's features remain in obscurity and are almost never used by PHP developers, who, as a result, are constantly trying to reinvent the wheel which already exists in PDO.
Unlike those, this tutorial is written by someone who has used PDO for many years, dug through it, and answered thousands questions on Stack Overflow (the sole gold PDO badge bearer). Following the mission of this site, this article will disprove various delusions and bad practices, while showing the right way instead.
TL;DR:Despite what all other tutorials say, you don't need a try..catch operator to report PDO errors. Catch an exception only if you have a handling scenario other than just reporting it. Otherwise just let it bubble up to a site-wide handler (note that you don't have to write one, there is a basic built-in handler in PHP, which is quite good).
Despite a widespread delusion, you should never catch errors to report them. A module (like a database layer) should not report its errors. This function has to be delegated to an application-wide handler. All we need is to raise an error (in the form of exception) - which we already did. That's all. Nor should you "always wrap your PDO operations in a try/catch" like the most popular tutorial from tutsplus recommends. Quite contrary, catching an exception should be rather an exceptional case (pun intended).
Exception handling is one of the problems with PDO tutorials. Being acquainted with exceptions for the first time when starting with PDO, authors consider exceptions dedicated to this library, and start diligently (but improperly) handling exceptions for PDO only. This is utter nonsense. If one paid no special attention to any exceptions before, they shouldn't have changed their habit for PDO. If one didn't use try..catch before, they should keep with that, eventually learning how to use exceptions and when it is suitable to catch them.
Hi,I was wondering if you could do a simple client/server pdo api example? I have been unable to find an examples/tutorials for a simple one. This should be geared towards having an application log data and then submit it either php or json/js to a remote DB site. I have made it work without an api, and with a simple php api . However I fail to be able to do this with PDO. It is not as simple as one would think.
Hi,Very good tutorial, thanks for sharing. My production database server went down and when the app tried to connect to it, the error report threw back the database connection details. Not nice. How would you recommend to handle this error?Thx
I have a piece of hardware that collects data and operates a machine and then you can log into it to get statistics. A second operation it does (not very well) is send out data to a web database which stores what it sends. Every tutorial i find with api for php uses mysqli connect or other bad practices. Do you have to do a tutorial with the right pdo framework?
I was at the beginning of writing a complex tutorial on how to use PDO in polish, because there's not even one good tutorial about it and while I was researching for some resources other than PHP manual I encountered your The only proper PDO tutorial and I got an idea to translate it into polish, of course give you a proper credit and publish it on my blog ( ).
You seem to be very a skilled PHP developer, could you link me a good PHP tutorial so I can start learning the language the right way? Right now I have a website that I wrote from scratch using HTML, CSS of course and a bit of copy-pasted, slightly edited JS. The only PHP I'm using are include statements so that my pages don't become too hard to maintain. I'd like to be able to load images, table content and text from a database, dynamically creating a page the same way it's also done on forums and webshops. I understand that PHP 7 is relatively new so most of the tutorials out there are written for PHP 5.6 or older. Is this a problem or is the conversion to 7 easy?
You can't seriously call this a "proper PDO tutorial" when you don't ever say what "PDO" means, not even once. I had to google it to find out that it means "PHP Data Objects", which doesn't appear anywhere on this page (except now in my comment).
Prerequisites This tutorial assumes RabbitMQ is installed and running on localhost on the standard port (5672). In case you use a different host, port or credentials, connections settings would require adjusting.
RabbitMQ speaks multiple protocols. This tutorial covers AMQP 0-9-1, which is an open,general-purpose protocol for messaging. There are a number of clientsfor RabbitMQ in many differentlanguages. We'lluse the php-amqplib in this tutorial, and Composerfor dependency management.
While this tutorial strives to keep things simple and focus on explaining RabbitMQconcepts, it is important to call out something that is specific to PHP applications.In many cases PHP application will not be able to use long-lived connectionsthat RabbitMQ assumes, creating a condition known as high connection churn.
Please keep in mind that this and other tutorials are, well, tutorials. They demonstrate one new concept at a time and may intentionally oversimplify some things and leave out others. For example topics such as connection management, error handling, connection recovery, concurrency and metric collection are largely omitted for the sake of brevity. Such simplified code should not be considered production ready.
All Apache Thrift tutorials require that you have: The Apache Thrift Compiler and Libraries, see Download and Building from Source for more details.
Generated the tutorial.thrift and shared.thrift files: thrift -r --gen php tutorial.thrift
Followed all prerequisites listed below.
PrerequisitesClientThis snippet was generated by Apache Thrift's source tree docs:tutorial/php/PhpClient.php
The first step here would be getting the protofile/protofiles and placing them in the application. For demonstration purposes, I have downloaded the Google Example Bookstore API protofile and used it in a simple library application in Symfony. The bookstore.proto file is used in Google gRPC tutorials and it is available here.
cURL is a PHP extension, that allows us to receive and send information via the URL syntax. By doing so, cURL makes it easy to communicate between different websites and domains. This tutorial includes 5 common cases for the use of cURL, and they include:
Using PHP's cURL extension provides us with a convenient way to communicate with other web sites, particularly with APIs that are provided by a third party. In the next tutorial, we will learn how to request for private details in the name of users that sign in to our website with their GitHub account. It will be done by using Github's API, and with the help of cURL. The tutorial will be a good starting point for learning how to make a social login with any social network.
These tools include a set of conventions about how programs should be written to support message catalogs, a directory and file naming organization for the message catalogs themselves, a runtime library supporting the retrieval of translated messages, and a few stand-alone programs to manipulate in various ways the sets of translatable strings, or already translated strings. In this tutorial we want to document how PHP internationalization with gettext works. It covers setup, use and best practice.
PO files are plain text files that contain the translation. In addition to creating a PO file by xgettext, it can be created and edited by hand in a plain text editor. PO editors can be used as well (for details please check the further reading section), but this tutorial describes the use of plain text editors.
Thanks to Lingohub, the translators that translate the content of the gettext files do not need to know anything about gettext or even be aware that it is the technology being used under the hood. They also do not need to install and setup any special application or PO editor - they can start translating right away, using any web browser from any available computer. In addition to that, translators have all other conveniences that the Lingohub platform provides. They just need to focus on translating. Similarly, you have immediate file output in the right format once the translations are done. No manual merging back necessary. I hope this tutorial was helpful, and I am going to turn to a few other aspects in future texts. Please leave your comments below.
This tutorial has been an introduction to help you get started with WebSockets and understand how Ratchet works. The next tutorial (in the works) will introduce the App class that will abstract some of the work into running your application.
Designed for intermediate users, our PHP tutorials can help you learn PHP inside and out. Find out how to use PHP with a MySQL database, and how to know if you should use CodeIgniter, Zend, Symfony, or CakePHP as your framework. Our tutorials also cover hard skills needed to build web applications, like working with forms, data, and sessions.
PHP is the most popular and widely-used server-side scripting language for web development. However, it requires a webserver to run even a locally developed webpage. There are various web server software for setting up our local webserver. Amongst them, PHP XAMPP and WampServer are the most popular. While WampServer is only available for the Windows platform, XAMPP is a cross-platform application that can run on Windows, Linux, and macOS. Hence, in this tutorial, you will learn PHP using XAMPP. 041b061a72