PHP 8.4: Set as default

.github/versions.sh

@@ -1,5 +1,5 @@
 # Versions of tools to use in CI.
-PHP_VERSION=8.2
+PHP_VERSION=8.4
 COMPOSER_VERSION=2.8.12
 NODE_VERSION=22.12.0
 PNPM_VERSION=10.4.0

docs/coding-guidelines.md

@@ -25,7 +25,7 @@ If you take a look at the contents of the `projects` folder, you can see that th
 
 ## The Jetpack Monorepo and its CLI
 
-Jetpack CLI requires PHP 8.2 and latest stable Node JS versions. Sometimes the version update lags behind for a while to make sure that [Calypso is using the same version](https://github.com/Automattic/wp-calypso/blob/trunk/.nvmrc).
+Jetpack CLI requires PHP 8.4 and latest stable Node JS versions. Sometimes the version update lags behind for a while to make sure that [Calypso is using the same version](https://github.com/Automattic/wp-calypso/blob/trunk/.nvmrc).
 
 Jetpack CLI is a requirement to work with Jetpack Monorepo, and it depends on the following tools:
 

docs/monorepo.md

@@ -213,7 +213,7 @@ On most Linux distributions, you can install the PHP ast extension using your pa
 
 - For Ubuntu/Debian-based systems:
   ```
-  sudo apt-get install php8.2-ast
+  sudo apt-get install php8.4-ast
   ```
 - For Arch Linux:
   Install the AUR package "php-ast" from https://aur.archlinux.org/packages/php-ast
@@ -226,7 +226,7 @@ Mac users have reported having trouble installing the PHP ast extension. See the
 
 <details><summary>Installing the PHP ast extension on Mac</summary>
 
-This assumes you have PHP installed via Homebrew, e.g. you've done `brew install php@8.2`.
+This assumes you have PHP installed via Homebrew, e.g. you've done `brew install php@8.4`.
 
 1. First, check whether ast is already installed by running `php --ri ast`. If it prints something like this, you should already be good (unless you need a newer version; see [Phan's README](https://github.com/phan/phan#getting-started) for version requirements):
    ```
@@ -326,7 +326,7 @@ On most Linux distributions, you can install the PHP pcov extension using your p
 
 - For Ubuntu/Debian-based systems:
   ```
-  sudo apt-get install php8.2-pcov
+  sudo apt-get install php8.4-pcov
   ```
 - For Arch Linux:
   Install the AUR package "php-pcov" from https://aur.archlinux.org/packages/php-pcov
@@ -339,7 +339,7 @@ Mac users have reported having trouble installing the PHP pcov extension. See th
 
 <details><summary>Installing the PHP pcov extension on Mac</summary>
 
-This assumes you have PHP installed via Homebrew, e.g. you've done `brew install php@8.2`.
+This assumes you have PHP installed via Homebrew, e.g. you've done `brew install php@8.4`.
 
 1. First, check whether pcov is already installed by running `php --ri pcov`. If it prints something like this, you should already be good:
    ```

projects/packages/autoloader/changelog/update-php8.4-set_as_default

@@ -0,0 +1,5 @@
+Significance: patch
+Type: changed
+Comment: Update coverage munging for PHPUnit 12.
+
+

projects/packages/autoloader/tests/php/bin/test-coverage.php

@@ -165,7 +165,7 @@ function get_path_transformation_map( $report_file_paths ) {
  *
  * @phan-suppress PhanAccessMethodInternal -- There's not really a way to avoid this.
  */
-function process_coverage_11( $report ) {
+function process_coverage_12( $report ) {
 	$data      = $report->getData( true );
 	$classname = get_class( $data );
 

projects/packages/image-cdn/changelog/update-php8.4-set_as_default

@@ -0,0 +1,5 @@
+Significance: patch
+Type: fixed
+Comment: Fix PHPUnit CoversFunction, leading backslash is not allowed.
+
+

projects/plugins/automattic-for-agencies-client/changelog/update-php8.4-set_as_default

@@ -0,0 +1,5 @@
+Significance: patch
+Type: changed
+Comment: Update composer.lock
+
+