WordPress Core Autoloader for Composer.

v1.0.0 2016-08-30 10:56 UTC

This package is auto-updated.

Last update: 2021-10-15 22:30:40 UTC


This is a custom autoloader generator and class map loader Composer plugin for WordPress Core.

It diverges from the default Composer autoloader setup in the following ways:

  • The generated autoloader is compatible with PHP 5.2. Classes containing PHP 5.3+ code will be skipped and throw warnings.
  • The paths to the classes are relative to a set constant. The default constant being used is ABSPATH.
  • The class maps can optionally be configured to be case-insensitive.


In your project's composer.json, add the following lines:

    "require": {
        "schlessera/composer-wp-autoload": "^1"
    "scripts": {
        "post-install-cmd": [
        "post-update-cmd": [
        "post-autoload-dump": [
    "extra": {
        "wordpress-autoloader": {
            "class-root": "ABSPATH",
            "case-sensitive": true

After the next update/install, you will have a vendor/autoload_wordpress.php file, that you can simply include and use to autoload classes within WordPress Core.

Valid "extra" Keys

You can configure the autoloader by providing "extra" keys under the "wordpress-autoloader" root key.

  • "class-root" :

    String value that is used to replace the dirname($vendorDir) string. The default is "ABSPATH", to make the autoloader use the ABSPATH constant.

  • "case-sensitive":

    Boolean value to configure whether the classmap loader should be case-sensitive or not. The default value is true.


All feedback / bug reports / pull requests are welcome.


This code is released under the MIT license.

For the full copyright and license information, please view the LICENSE file distributed with this source code.