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1. How to Use a PHP Payment API to Generate Payment Links or QRCode Images

Blog: UPI PHP Payment API Link package blog
Package: UPI PHP Payment API Link

Many payment systems can generate URLs for links that can be used in sites to make the payment system mobile application open when those payment links are clicked by customers.

This package can generate QRCode images that encode the payment URLs, so customers can aim their mobile phone cameras at the QRCode images displayed on a Web page.

This way it becomes easier for the customers to trigger a payment action by using their mobile phones.


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1. How to Implement a PHP WhatsApp Bot to Provide Integration of Web Applications with WhatsApp

Blog: Villaments PHP WhatsApp API package blog
Package: Villaments PHP WhatsApp API

WhatsApp is a popular chat application used by many millions of people around the world.

This package provides a solution for applications to send messages to other users and interact with them using the Villaments API.


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1045. 3 Ways to Embed PDF in a Web Page

As we all know, PDF is a popular file format used to distribute documents that often are meant to be printed.

There are several ways to display the contents of a PDF document in a Web page.

Read this article to learn about 3 ways that can be used to make PDF documents be displayed in any HTML Web page.


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1. How to Implememnt a PHP Regular Expression Tester to Match the Patterns You Want to Extract From Text Strings

Blog: PHP Regex Analyzer and Composer package blog
Package: PHP Regex Analyzer and Composer

Regular expressions are often used to check if a string matches a given format and extract values from parts of that string.

This package provides a solution to compose and parse a regular expression to make it easier to edit the regular expression and change it to match expression formats that are of the interest of the developer.


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1. How Can PHP Extract and Display Information about an App Inventor Project

Blog: PHP MIT App Inventor Extension Extractor package blog
Package: PHP MIT App Inventor Extension Extractor

MIT App Inventor is an application that allows people without much programming knowledge to create their own applications.

The App Inventor application generates some data files that stored in a directory.

This package can go into the directory of a given App Inventor application and parse the files in that directory to extract some relevant details about the application that was created with App Inventor.


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1. How to implement a PHP Truss 3D Calculator to Design Physical Objects

Blog: PHP Truss 3D Class package blog
Package: PHP Truss 3D Class

A pin truss is a piece that can be used to join different parts of a physical object like for instance a piece of furniture.

Ideally, to make the piece of furniture hold itself with robustness, it is necessary to perform calculations to design the pin truss.

This class uses the finite element method to perform such calculations to give an idea of the robustness of a given pin truss.


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1044. How to Use Your Programming Mistakes to Learn to be a Better Developer and the New PHP ElePHPant Models that Are Available Now

Recently we discovered that we made a mistake in the implementation of our newsletter mailing system.

We believe that we have fixed this mistake, but more important than that we also learned how to improve our development and deployment practices to avoid the bad consequences of our mistakes in the future.

Read this article to learn more about how you can also improve your software development practices to implement software that is more robust and your work is gets better acceptance.

As a side topic, you can also see some pictures and learn about the new ElePHPant Models that we made available now in the PHP Classes so you may get as nice addition to your collection.


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1. How You Can You Use PHP Functional Programming to Execute the Same Operation on Set of Objects with Few Lines of Code

Blog: Mezon PHP Functional Programming Library package blog
Package: Mezon PHP Functional Programming Library

Sometimes you need to perform the same operation on a set of distinct objects.

This package makes it easier to perform a given operation on multiple objects by invoking a given function those objects.


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1. How Organize Better Laravel Applications Separating Actions on Models from Custom Actions

Blog: Fireworks Laravel Event Sourcing package blog
Package: Fireworks Laravel Event Sourcing

Web applications in PHP.

Among other benefits, it provides means to easily create model classes that can be used to store and retrieve application model object data in databases. These model classes implement functions to create, read, update and delete objects from the database.

This package provides a trait that can be used to register callback functions that can be used to integrate better the actions performed by model classes using external classes.

This way the organization of application functions can be improved by separating the actions of model classes from any custom actions that may need to be performed by other components.


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1043. Where You Can Learn SEO for Free Now to Optimize Your Sites to Rank High in Google

As you may know, SEO is the activity to optimize Web site pages, so they can increase their ranking in Google search results and attract many visitors in the site.

The PHP Classes site was started in 1999 and always benefited from the fact that many of its pages are well ranked in Google, thus leading to many visitors that become interested in the content published by over 4300 developers that contributed their work to the site.

Now you can learn more about SEO thanks to a new YouTube channel named 4D User SEO . It was created by Manuel Lemos, the founder of the PHP Classes site, together with other members of the PHP Classes team to teach all you would like to know about SEO done in the right way always following Google Webmaster rules.

Read this short article or watch a short video to learn more about the 4D User SEO YouTube channel, how to access the channel and watch the videos that were published, as well how to ask questions to be answered in the following videos to be published in there.


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