How to debug a custom Composer package installation path?

Customize the Composer package installation directory and debugging skills

Composer installs dependency packages to the vendor directory by default. If you need to customize the installation path, you usually need to create additional plugins. This article focuses on how to efficiently debug the installation process of custom Composer packages, such as printing custom installation paths.

Many developers want to print the value of a specific variable (such as $installPath ) when debugging custom Composer packages. Running the code directly in the vendor directory doesn't work because the Composer installation process is not simple code execution.

Efficient debugging method:

There is no need to create additional plug-in packages to just print the installation path. Composer itself provides convenient debugging methods.

1. Install composer/composer package: Use the command composer require composer/composer to install.

2. Run Composer directly: Use the command php vendor/bin/composer to start Composer. This will enter the Composer execution environment, making it easy to print variables such as $installPath , thereby debugging custom installation paths, avoiding the complexity of writing and debugging additional plugins.

This method directly utilizes the Composer running environment to solve debugging problems concisely and efficiently.

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