Strategy to override a class in a library installed with Composer

Question

I am using Codeigniter and Composer. One of the requirements is PHPExcel. Now I need to change a function in one of the classes. What should be the best strategy to do it? S

Answer 1

Adding these last 2 lines to the autoload section of my composer.json is what worked for me when I wanted to override just one file within the vendors directory:

"autoload": {        
    "classmap": [
        "database"
    ],
    "psr-4": {
        "App\\": "app/"
    },
    "exclude-from-classmap": ["vendor/somepackagehere/blah/Something.php"],
    "files": ["app/Overrides/Something.php"]
},

Remember that the namespace within app/Overrides/Something.php needs to match whatever the original was in vendor/somepackagehere/blah/Something.php.

Remember to run composer dump-autoload after editing the composer.json.

_{Docs: https://getcomposer.org/doc/04-schema.md#files}