Ubuntu install php ext dom

How to Install the «ext-dom» PHP Extension for Laravel Projects on PHP 7.2 — Step-by-Step Guide

Learn how to install the «ext-dom» PHP extension for Laravel projects on PHP 7.2 with this step-by-step guide. Get tips and best practices for PHP and Laravel development.

• Understanding the “ext-dom” PHP Extension
• Installing the “ext-dom” PHP Extension on Ubuntu for PHP 7.2
• Enabling the “ext-dom” PHP Extension
• Additional Tips and Best Practices for PHP and Laravel Development
• Common Issues and Solutions for PHP Development
• Other helpful code examples for installing the «ext-dom» PHP extension on PHP 7.2
• Conclusion
• How to install DOM extension in PHP?
• What is PHP DOM extension?
• How to enable extensions in PHP?
• How to install PHP extension in Windows?

Laravel is a popular PHP framework used for building web applications. PHPUnit is a testing framework used to test PHP code. The “ext-dom” PHP extension is required for Laravel projects to work properly with PHPUnit. This extension allows for operating on XML documents through the DOM API with PHP. In this blog post, we will provide a step-by-step guide on how to install the “ext-dom” PHP extension on Ubuntu for PHP 7.2, as well as some helpful tips and best practices for PHP and Laravel development.

Understanding the “ext-dom” PHP Extension

The “ext-dom” PHP extension is a part of the PHP core and allows for operating on XML documents through the DOM API with PHP. This extension is required for Laravel projects to work properly with PHPUnit. Other missing PHP extensions that may need to be installed include “ext-mbstring” and “ext-curl”.

Installing the “ext-dom” PHP Extension on Ubuntu for PHP 7.2

To install the “ext-dom” PHP extension on Ubuntu for PHP 7.2, follow these steps:

1. Open the terminal and run the command sudo apt-get update to update the package list.
2. Run the command sudo apt-get install php7.2-xml to install the “ext-dom” PHP extension.
3. Restart Apache by running the command sudo service apache2 restart .

If the extension is missing, Composer may throw an error and the project may not be installable. Different versions of PHP may require different commands to install the extension. PHP extensions use UTF-8 encoding.

Enabling the “ext-dom” PHP Extension

The “ext-dom” PHP extension may not be enabled by default on some systems, such as Ubuntu 20. To enable the “ext-dom” PHP extension, follow these steps:

1. Open the terminal and run the command sudo nano /etc/php/7.2/apache2/php.ini to open the php.ini file.
2. Search for the line ;extension=dom and uncomment it by removing the semicolon (;) at the beginning of the line.
3. Save the file by pressing Ctrl + O , then exit by pressing Ctrl + X .
4. Restart Apache by running the command sudo service apache2 restart .

The “ext-dom” PHP extension may need to be restarted after installation.

Additional Tips and Best Practices for PHP and Laravel Development

Here are some additional tips and best practices for PHP and Laravel development:

• Upgrade to Symfony 4 or 5 for better compatibility.
• Composer may require other PHP extensions as well.
• Some systems may require the PHP version to be recompiled with the extension.
• tips for optimizing php performance.
• tricks for debugging php code.

Common Issues and Solutions for PHP Development

Here are some common issues and solutions for PHP development:

• Installing PHP extensions on Amazon EC2 instances.
• Advantages of using php for web development.
• Disadvantages of using php compared to other programming languages.
• Popular programming languages for web development.
• Cheatsheet for common PHP functions and syntax.

Other helpful code examples for installing the «ext-dom» PHP extension on PHP 7.2

In Php , in particular, Install ext-dom php 7.2 code sample

sudo apt-get update sudo apt-get install php7.2-xml

Conclusion

The “ext-dom” PHP extension is required for Laravel projects to work properly with PHPUnit. To install the extension on Ubuntu for PHP 7.2, use the command sudo apt-get install php7.2-xml . The extension may not be enabled by default on some systems, so it may need to be manually enabled. Other missing PHP extensions that may need to be installed include “ext-mbstring” and “ext-curl”. By following these steps and best practices, you can ensure that your PHP and Laravel development is optimized and error-free.

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How to Install ext-dom PHP 7.2 on Ubuntu, Windows, CentOS, and RHEL

Learn how to install the ext-dom PHP 7.2 extension on Ubuntu, Windows, CentOS, and RHEL with helpful tips for optimizing PHP code and best practices for PHP development.

• Installing ext-dom on Ubuntu
• Installing ext-dom on Windows
• Installing PHP extensions on CentOS and RHEL
• Tips for optimizing PHP code
• Best practices for PHP development
• Other quick examples for installing ext-dom PHP 7.2
• Conclusion
• How do I install the PHP DOM extension on CentOS?
• Is PHP DOM extension enabled by default on Ubuntu 20?
• How to install the Ext-curl extension with PHP 7?
• How to install a PHP extension on Windows?

PHP is a widely-used server-side scripting language used for creating dynamic web pages and applications. It is known for its flexibility, ease-of-use, and ability to integrate with other languages. PHP has a vast array of extensions, which are libraries that can be added to PHP to enhance its capabilities. One such extension is ext-dom PHP 7.2, a commonly used extension for manipulating XML documents. In this article, we’ll discuss how to install the ext-dom PHP 7.2 extension on Ubuntu and Windows, as well as provide helpful tips for optimizing php code and best practices for php development .

Installing ext-dom on Ubuntu

Ubuntu is a popular Linux distribution widely used for web and application development. Installing ext-dom PHP 7.2 on Ubuntu is straightforward. The following steps outline the installation process:

1. Open the terminal by pressing Ctrl+Alt+T on your keyboard.
2. Type the following command to install the PHP-XML package:

sudo apt-get install php7.2-xml 

sudo apt-get install php-mbstring 

sudo systemctl restart apache2 

Installing ext-dom on Windows

Installing ext-dom PHP 7.2 on Windows is a little different from installing it on Ubuntu. The following steps outline the installation process:

1. Download the pre-compiled extension from https://windows.php.net/downloads/pecl/releases/dom/ .
2. Extract the downloaded file and copy the php_dom.dll file to your PHP extensions directory. This directory is usually located at C:\php\ext .
3. Open your PHP configuration file php.ini , which is usually located at C:\php\php.ini , and add the following line to the end of the file:

Installing PHP extensions on CentOS and RHEL

CentOS and RHEL are popular Linux distributions used for web and application development. The process of installing ext-dom PHP 7.2 on CentOS and RHEL is similar to that of Ubuntu. Here are the steps:

1. Open the terminal by pressing Ctrl+Alt+T on your keyboard.
2. Type the following command to install the PHP-XML package:

sudo systemctl restart httpd 

Tips for optimizing PHP code

PHP code can be optimized to improve performance and reduce load times. Here are some tips:

1. Use a caching mechanism: Caching can significantly improve PHP code performance . There are several caching mechanisms available, such as APC, Redis, and Memcached.
2. Minimize database queries: Minimizing database queries can also improve performance. You can achieve this by using caching mechanisms or optimizing your SQL queries.
3. Use a content delivery network (CDN): Using a CDN for static assets can speed up page load times. A CDN is a network of servers located around the world that can serve static assets such as images, CSS, and JavaScript files.
4. Use a PHP cheatsheet: A PHP cheatsheet can help developers quickly reference php syntax and functions . Cheatsheets are available online for free and can be downloaded for offline use.

Best practices for PHP development

Following best practices can make your PHP code more organized, maintainable, and secure. Here are some best practices to follow:

1. Use object-oriented programming : Object-oriented programming can make your code more organized and maintainable. It allows you to encapsulate data and behavior into classes, making your code easier to understand and modify.
2. Write clean and maintainable code : Writing clean and maintainable code can save time and prevent errors. Use meaningful variable names, avoid global variables , and follow a consistent coding style.
3. Follow secure coding practices : Follow secure coding practices to prevent security vulnerabilities such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). Use prepared statements for database queries , sanitize user input, and validate user input on the server-side.
4. Learn other programming languages: Popular programming languages for web development other than PHP include Python, Ruby, and JavaScript. Learning other languages can broaden your skills and make you a more versatile developer.

Other quick examples for installing ext-dom PHP 7.2

In Php , in particular, Install ext-dom php 7.2 code example

sudo apt-get update sudo apt-get install php7.2-xml

Conclusion

Installing the ext-dom PHP 7.2 extension can be done easily using various commands on Ubuntu, CentOS, RHEL, and Windows. Restarting Apache after installing a new extension is necessary for PHP to pick up the changes. Optimizing PHP code and following best practices can improve performance and prevent errors and security vulnerabilities. Other popular programming languages for web development include Python, Ruby, and JavaScript. By following the steps outlined in this article, you can install the ext-dom PHP 7.2 extension and start manipulating XML documents in your PHP code.

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PHP — Ubuntu — ext-dom — the requested PHP extension dom is missing from your system

получаем серию ошибок: requires ext-dom * -> the requested PHP extension dom is missing from your system. :

Problem 1 - Installation request for dompdf/dompdf v0.8.3 -> satisfiable by dompdf/dompdf[v0.8.3]. - dompdf/dompdf v0.8.3 requires ext-dom * -> the requested PHP extension dom is missing from your system. Problem 2 - Installation request for phar-io/manifest 1.0.3 -> satisfiable by phar-io/manifest[1.0.3]. - phar-io/manifest 1.0.3 requires ext-dom * -> the requested PHP extension dom is missing from your system. Problem 3 - Installation request for phpunit/php-code-coverage 6.1.4 -> satisfiable by phpunit/php-code-coverage[6.1.4]. - phpunit/php-code-coverage 6.1.4 requires ext-dom * -> the requested PHP extension dom is missing from your system. Problem 4 - Installation request for phpunit/phpunit 7.5.16 -> satisfiable by phpunit/phpunit[7.5.16]. - phpunit/phpunit 7.5.16 requires ext-dom * -> the requested PHP extension dom is missing from your system. Problem 5 - Installation request for theseer/tokenizer 1.1.3 -> satisfiable by theseer/tokenizer[1.1.3]. - theseer/tokenizer 1.1.3 requires ext-dom * -> the requested PHP extension dom is missing from your system. Problem 6 - dompdf/dompdf v0.8.3 requires ext-dom * -> the requested PHP extension dom is missing from your system. - laravel/cashier v7.2.2 requires dompdf/dompdf ^0.8.0 -> satisfiable by dompdf/dompdf[v0.8.3]. - Installation request for laravel/cashier v7.2.2 -> satisfiable by laravel/cashier[v7.2.2].

Решение — доустановить модуль для PHP php-xml:

# apt install php-xml # systemctl restart apache2

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