PHP extension development: How to test and debug custom functions?

In PHP extension development, testing and debugging custom functions is very important. You can do this by following these steps: Set up a test environment, using tools like Docker, Vagrant, or Xdebug. Write test cases to verify the behavior of the function. Use tools like Xdebug to debug extensions and analyze execution steps and variable values.

PHP extension development: How to test and debug custom functions

In PHP extension development, it is crucial to test and debug custom functions to ensure Its correctness and efficiency. This article will guide you on how to perform these tasks.

Step 1: Configure the test environment

It is critical to set up a test environment for testing PHP extensions. You can use the following tools:

Docker
Vagrant
Xdebug

Step 2: Write test cases

<?php
use PHPUnit\Framework\TestCase;

class MyExtensionTest extends TestCase
{
    public function testMyFunction()
    {
        $result = my_function('input');
        $this->assertEquals('expected output', $result);
    }
}

Step 3: Debugging extensions

Use tools such as Xdebug for debugging.

zend_extension=xdebug.so
xdebug.remote_enable=1
xdebug.remote_host=localhost
xdebug.remote_port=9000

Open the debugger and analyze the execution steps and variable values.

Practical case

Consider a custom my_function that accepts a string $input and returns the processed output.

ZEND_FUNCTION(my_function)
{
    char *input;
    int input_len;

    ZEND_PARSE_PARAMETERS_START(1, 1)
        Z_PARAM_STRING(input, input_len)
    ZEND_PARSE_PARAMETERS_END();

    // 处理输入并生成输出

    RETURN_STRING(processed_output);
}

Test Cases

<?php
use PHPUnit\Framework\TestCase;

class MyExtensionTest extends TestCase
{
    public function testMyFunction()
    {
        $input = 'some input string';
        $expected = 'processed output';

        $result = my_function($input);

        $this->assertEquals($expected, $result);
    }
}

Running Tests

phpunit MyExtensionTest

Debugging Steps

php -dxdebug.remote_enable=1 -dxdebug.remote_host=localhost -dxdebug.remote_port=9000 index.php

Start the debugger and connect to the PHP process. Use breakpoints and variable monitoring to analyze code behavior.

The above is the detailed content of PHP extension development: How to test and debug custom functions?. For more information, please follow other related articles on the PHP Chinese website!