Fix ArrayAccess and JsonSerializable return types

First round of modifications for PHP 8.1

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

2 files changed, 14 insertions, 6 deletions

diff --git a/lib/private/Files/Cache/CacheEntry.php b/lib/private/Files/Cache/CacheEntry.php
index 156f075c2d0..12f0273fb6e 100644
--- a/lib/private/Files/Cache/CacheEntry.php
+++ b/lib/private/Files/Cache/CacheEntry.php
@@ -37,18 +37,22 @@ class CacheEntry implements ICacheEntry {
 		$this->data = $data;
 	}
 
-	public function offsetSet($offset, $value) {
+	public function offsetSet($offset, $value): void {
 		$this->data[$offset] = $value;
 	}
 
-	public function offsetExists($offset) {
+	public function offsetExists($offset): bool {
 		return isset($this->data[$offset]);
 	}
 
-	public function offsetUnset($offset) {
+	public function offsetUnset($offset): void {
 		unset($this->data[$offset]);
 	}
 
+	/**
+	 * @return mixed
+	 */
+	#[\ReturnTypeWillChange]
 	public function offsetGet($offset) {
 		if (isset($this->data[$offset])) {
 			return $this->data[$offset];
diff --git a/lib/private/Files/FileInfo.php b/lib/private/Files/FileInfo.php
index 8a8de6e4c19..2f361fc051d 100644
--- a/lib/private/Files/FileInfo.php
+++ b/lib/private/Files/FileInfo.php
@@ -104,18 +104,22 @@ class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
 		$this->rawSize = $this->data['size'] ?? 0;
 	}
 
-	public function offsetSet($offset, $value) {
+	public function offsetSet($offset, $value): void {
 		$this->data[$offset] = $value;
 	}
 
-	public function offsetExists($offset) {
+	public function offsetExists($offset): bool {
 		return isset($this->data[$offset]);
 	}
 
-	public function offsetUnset($offset) {
+	public function offsetUnset($offset): void {
 		unset($this->data[$offset]);
 	}
 
+	/**
+	 * @return mixed
+	 */
+	#[\ReturnTypeWillChange]
 	public function offsetGet($offset) {
 		if ($offset === 'type') {
 			return $this->getType();