storage: update IStorage#file_put_contents docs to match usage

The current phpdoc of IStorage#file_put_contents doesnt corresponds to
it's actual usage in code, e.g.

Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>

2 files changed, 4 insertions, 4 deletions

diff --git a/lib/public/Files/Storage.php b/lib/public/Files/Storage.php
index d642512641d..2d89ce9f28e 100644
--- a/lib/public/Files/Storage.php
+++ b/lib/public/Files/Storage.php
@@ -230,8 +230,8 @@ interface Storage extends IStorage {
 	 * see http://php.net/manual/en/function.file_put_contents.php
 	 *
 	 * @param string $path
-	 * @param string $data
-	 * @return bool
+	 * @param mixed $data
+	 * @return int|false
 	 * @since 6.0.0
 	 */
 	public function file_put_contents($path, $data);
diff --git a/lib/public/Files/Storage/IStorage.php b/lib/public/Files/Storage/IStorage.php
index f5073d1ad73..9cd5553b8bf 100644
--- a/lib/public/Files/Storage/IStorage.php
+++ b/lib/public/Files/Storage/IStorage.php
@@ -226,8 +226,8 @@ interface IStorage {
 	 * see http://php.net/manual/en/function.file_put_contents.php
 	 *
 	 * @param string $path
-	 * @param string $data
-	 * @return bool
+	 * @param mixed $data
+	 * @return int|false
 	 * @since 9.0.0
 	 */
 	public function file_put_contents($path, $data);