As a language widely used in Web development, PHP provides developers with a variety of debugging tools for program debugging. Among the many debugging tools, the one built into the Phalcon framework has obvious advantages. It can help developers quickly locate and solve problems in the program. This article will introduce how to use PHP and Phalcon debugging tools for program debugging.
1. PHP debugging tools
There are many debugging tools for the PHP language. The following are some of the commonly used ones.
Xdebug is an extension library for PHP debugging. It provides various functions needed to diagnose your PHP code, including stack traces, variable output, Code coverage and Profiling. Xdebug can catch fatal errors, exceptions, and other warnings in PHP and feed them back to developers. In addition, Xdebug is compatible with commonly used development tools such as PHPStorm and Vscode.
Zend Debugger is a PHP language debugging tool developed by Zend Company. It supports all versions of the PHP language and can be used in PHP 5.2.x ~ 5.6 Used on .x version. Zend Debugger can debug PHP web applications, including web pages and web services, and can also be used in console scripts and command line applications. Similar to Xdebug, Zend Debugger can also catch fatal errors, exceptions, and other warnings in PHP and feed them back to developers.
PHP Debug Bar is an open source project that can be used to view debugging information for an application inside the code or on a web browser client. Its core functionality is to collect and present debugging information. The PHP Debug Bar class library is very lightweight and can be easily installed and integrated into existing projects.
Kint is a PHP debugging tool that can output detailed information about variables or objects for quick debugging and viewing the current status of variables/objects. Kint simplifies the debugging process and reduces development time. The code is very readable and the number of lines of code is very few.
2. The debugging tool that comes with the Phalcon framework
Phalcon is a high-performance PHP framework. Since Phalcon is a C extension module library, it can be used in PHP outside of Zend Engine. Provides fast and efficient performance in web applications. In addition, the Phalcon framework also has many powerful development tools built in, which can help developers develop high-quality web applications.
Phalcon Debug is the debugging tool that comes with the Phalcon framework. It can display PHP warnings, errors, exceptions, debugging information, etc. in web applications, and provide visual debugging tools. During development, integrating Phalcon Debug into your web application can quickly diagnose your program's problems and optimize your code. Phalcon Debug is very simple to use. You only need to configure it in your application to use it for debugging.
Phalcon DevTools is a command line tool provided by the Phalcon framework. It can help developers quickly create Phalcon applications and generate models, views, and controllers. and other documents. In addition, Phalcon DevTools provides a set of command line tools for debugging Phalcon applications and databases. Phalcon DevTools can greatly increase the speed of program development while also avoiding common problems and errors in programs.
3. How to use PHP and Phalcon debugging tools for program debugging
First, you need to install Xdebug or Zend Debugger. In PHP 7 or higher, Zend Debugger is sometimes more capable than Xdebug in fully supporting debugging capabilities. Therefore, it is recommended to use Zend Debugger for debugging in PHP 7 or higher.
If you are using the Phalcon framework, you can use Phalcon Debug and Phalcon DevTools for debugging. You can use Composer or manually download the Phalcon Debug and Phalcon DevTools libraries and add them to your application.
Enabling debugging in PHP is very simple. You only need to add the following configuration to the php.ini file to enable Xdebug or Zend Debugger:
zend_extension = {xdebug.so or zend_debugger.so}
xdebug.remote_enable = On
xdebug.remote_handler=dbgp
xdebug.remote_mode = req
xdebug.remote_port = 9000
xdebug.remote_autostart = On
xdebug.remote_connect_back = On
The above settings configure the use of Xdebug or Zend Debugger for debugging, and at the same time Some parameters for communication between the debugger and the development machine are also configured, such as defining the mode and address of debugging. By adding these configurations to php.ini, you can enable PHP debugging.
Phalcon Debug can collect information in Phalcon framework applications and present debugging information on the web browser. Using Phalcon Debug is as simple as integrating it into your application and then visiting a specific URL during the development of your application to view debugging information on your web browser.
Phalcon DevTools provides multiple command line tools for creating and generating Phalcon applications, creating and generating models, views and other files, and also includes a A command line tool named "debug" for viewing debugging information of an application. Using Phalcon DevTools, you can quickly create and generate code and then debug it using the "debug" command.
Summary
For PHP programmers, debugging is a very important job. No matter which PHP debugging tool you choose to use, as long as you are proficient in them and integrate them into your application, you can quickly locate and solve problems in your program. Using Phalcon Debug and Phalcon DevTools can greatly improve the efficiency of program development, and can also greatly improve the stability and reliability of the program.
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