Update PHP version fetching method to use releases from php.net

Author: XSmeets

.github/workflows/docker.yml

@@ -106,10 +106,10 @@ jobs:
         run: |
           export PATH="$PATH:$HOME/.composer/vendor/bin"
           PHP_CONSTRAINT=$(jq -r '.require.php' composer.json)
-          # Get all PHP tags from Docker Hub (paginated, up to 1000 tags)
-          TAGS=$(curl -s 'https://registry.hub.docker.com/v2/repositories/library/php/tags?page_size=1000' | jq -r '.results[].name')
-          # Filter for fpm-alpine tags and extract version numbers
-          VERSIONS=$(echo "$TAGS" | grep -E '^[0-9]+\.[0-9]+(\.[0-9]+)?-fpm-alpine$' | sed 's/-fpm-alpine//' | sort -V)
+          # Fetch all PHP releases from php.net (JSON)
+          RELEASES=$(curl -s 'https://www.php.net/releases/index.php?json&max=1000')
+          # Extract all version fields from the JSON and sort
+          VERSIONS=$(echo "$RELEASES" | jq -r '.[] | select(.version != null) | .version' | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | sort -V)
           # Use composer/semver to find the highest matching version
           MATCH=$(echo "$VERSIONS" | xargs -I{} semver "$PHP_CONSTRAINT" {} | tail -n1)
           if [ -z "$MATCH" ]; then