ci: fallback on static-php.dev mirror when php.net is down (#2233)

Unfortunately, GitHub Actions is often blocked by the php.net CDN. This
patch adds a fallback to use GitHub to try to determine the PHP version
to use. This is less ideal because PHP currently doesn't use GitHub
extensively, and distribution archives aren't available in the GitHub
releases, only on php.net.

Author: dunglas

.github/workflows/sanitizers.yaml

@@ -52,7 +52,7 @@ jobs:
       - name: Determine PHP version
         id: determine-php-version
         run: |
-          curl -fsSL 'https://www.php.net/releases/index.php?json&max=1&version=8.5' -o version.json
+          curl -fsSL 'https://www.php.net/releases/index.php?json&max=1&version=8.5' -o version.json 2>/dev/null || curl -fsSL 'https://phpmirror.static-php.dev/releases/index.php?json&max=1&version=8.5' -o version.json
           echo version="$(jq -r 'keys[0]' version.json)" >> "$GITHUB_OUTPUT"
           echo archive="$(jq -r '.[] .source[] | select(.filename |endswith(".xz")) | "https://www.php.net/distributions/" + .filename' version.json)" >> "$GITHUB_OUTPUT"
       - name: Cache PHP
@@ -65,7 +65,8 @@ jobs:
         name: Compile PHP
         run: |
           mkdir php/
-          curl -fsSL "${URL}" | tar -Jx -C php --strip-components=1
+          MIRROR_URL=${URL/https:\/\/www.php.net/https:\/\/phpmirror.static-php.dev}
+          (curl -fsSL "${URL}" || curl -fsSL "${MIRROR_URL}") | tar -Jx -C php --strip-components=1
           cd php/
           ./configure \
             CFLAGS="$CFLAGS" \

.github/workflows/tests.yaml

@@ -129,7 +129,7 @@ jobs:
       - name: Download PHP sources
         run: |
           PHP_VERSION=$(php -r "echo PHP_VERSION;")
-          wget -q "https://www.php.net/distributions/php-${PHP_VERSION}.tar.gz"
+          wget -q "https://www.php.net/distributions/php-${PHP_VERSION}.tar.gz" || wget -q "https://phpmirror.static-php.dev/distributions/php-${PHP_VERSION}.tar.gz"
           tar xzf "php-${PHP_VERSION}.tar.gz"
           echo "GEN_STUB_SCRIPT=${PWD}/php-${PHP_VERSION}/build/gen_stub.php" >> "${GITHUB_ENV}"
       - name: Set CGO flags

build-static.sh

@@ -62,7 +62,7 @@ fi
 if [ -z "${PHP_VERSION}" ]; then
 	get_latest_php_version() {
 		input="$1"
-		json=$(curl -s "https://www.php.net/releases/index.php?json&version=$input")
+		json=$(curl -fsSL "https://www.php.net/releases/index.php?json&version=$input" 2>/dev/null || curl -fsSL "https://phpmirror.static-php.dev/releases/index.php?json&version=$input")
 		latest=$(echo "$json" | jq -r '.version')
 
 		if [[ "$latest" == "$input"* ]]; then