PHP debugging skills and tool recommendations in small program development

PHP debugging skills and tool recommendations in mini program development

With the rapid popularity of mini programs, PHP is increasingly used in mini program development. However, due to the complexity of PHP debugging and the characteristics of interaction between mini programs and PHP, debugging PHP code has become a major problem faced by mini program developers. This article will introduce some PHP debugging skills and recommend some commonly used tools to help small program developers debug more efficiently.

1. Debugging skills

1. Set error reporting level (error_reporting)

In PHP code, set the error reporting level to E_ALL, you can use PHP displays all error and warning messages. This is very important for troubleshooting errors. Setting the error reporting level to E_ALL in the development environment can help find potential problems. In a production environment, error reporting levels should be set to E_ALL & ~E_NOTICE to avoid exposing sensitive information to users.

Sample code:

error_reporting(E_ALL);

2. Use var_dump and print_r to output variable information

In PHP code, you can use the var_dump and print_r functions to output variables Information, including type, value, length, etc. These functions can help developers gain insight into the actual contents of variables to identify potential problems. During debugging, these two functions are often used to output variable information to better understand how the code is running.

Sample code:

$var = array('a', 'b', 'c');
var_dump($var);
print_r($var);

3. Logging

Writing key debugging information to the log file is one of the common techniques for debugging PHP code. Using the file_put_contents function in the code, you can write debugging information to the specified log file. Logging can easily track variable values, function calls, error messages, etc. during code execution.

Sample code:

$log = '调试信息：' . $var;
file_put_contents('debug.log', $log . PHP_EOL, FILE_APPEND);

2. Recommended debugging tools

1. Xdebug

Xdebug is a powerful PHP debugging tool. Supports connecting debugger and PHP code, providing rich debugging functions. You can set breakpoints and step debugging in PHP code, and support remote debugging. Through Xdebug, you can more intuitively understand the code execution process, find problems and optimize the code.

The process of installing Xdebug is more complicated and requires configuring extensions and debuggers in the PHP environment. For specific installation methods and usage instructions, please refer to Xdebug's official documentation.

2. PhpStorm

PhpStorm is an integrated development environment (IDE) specially designed for PHP developers, providing powerful debugging capabilities. It supports connection with debuggers such as Xdebug and Zend Debugger, and provides an intuitive interface and rich debugging options. Through PhpStorm, you can easily perform breakpoint debugging, variable monitoring, code execution tracking, etc.

PhpStorm is a commercial software, but it offers a 30-day free trial. For professional PHP developers, PhpStorm is a debugging tool worth investing in.

Summary:

In small program development, PHP debugging is an essential task. By rationally using debugging skills and professional debugging tools, debugging efficiency can be improved and problems can be solved quickly. This article introduces some PHP debugging skills and debugging tools recommended by enterprises, hoping to be helpful to small program developers. No matter which debugging method is chosen, reasonable debugging should be carried out according to the actual situation, and development specifications and safety requirements should be followed.

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