diff --git a/.github/workflows/conventional-pr-title.yml b/.github/workflows/conventional-pr-title.yml
index 95bceb6d8e..ebe476494d 100644
--- a/.github/workflows/conventional-pr-title.yml
+++ b/.github/workflows/conventional-pr-title.yml
@@ -21,4 +21,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           scopes: |
-            (?:all|(?:js|ts|dart|python|rust|beam)(?:/(?:js|ts|dart|python|rust|beam))*)
+            (?:all|(?:js|ts|dart|python|rust|beam|php)(?:/(?:js|ts|dart|python|rust|beam|php))*)
diff --git a/src/fable-library-php/Environment.php b/src/fable-library-php/Environment.php
new file mode 100644
index 0000000000..a43b598319
--- /dev/null
+++ b/src/fable-library-php/Environment.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Environment;
+
+// System.Environment.GetEnvironmentVariable(name).
+// PHP's getenv() returns the value as a string, or false when the variable is
+// not set. .NET returns null for a missing variable, so map false to null.
+function getEnvironmentVariable($name)
+{
+    $value = \getenv($name);
+    return $value === false ? null : $value;
+}