Fix some PHP 8.1 warnings (#4012)

* Fix some PHP 8.1 warnings
The proper fix will have to wait till be drop PHP7.
#fix https://github.com/FreshRSS/FreshRSS/issues/4010

* Another PHP8.1 fix

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/Minz/Pdo.php b/lib/Minz/Pdo.php
index d334c0533..9c754be86 100644
--- a/lib/Minz/Pdo.php
+++ b/lib/Minz/Pdo.php
@@ -28,6 +28,8 @@ abstract class Minz_Pdo extends PDO {
 		return $this->autoPrefix($statement);
 	}
 
+	// PHP8+: PDO::lastInsertId(?string $name = null): string|false
+	#[\ReturnTypeWillChange]
 	public function lastInsertId($name = null) {
 		if ($name != null) {
 			$name = $this->preSql($name);
@@ -35,16 +37,22 @@ abstract class Minz_Pdo extends PDO {
 		return parent::lastInsertId($name);
 	}
 
+	// PHP8+: PDO::prepare(string $query, array $options = []): PDOStatement|false
+	#[\ReturnTypeWillChange]
 	public function prepare($statement, $driver_options = array()) {
 		$statement = $this->preSql($statement);
 		return parent::prepare($statement, $driver_options);
 	}
 
+	// PHP8+: PDO::exec(string $statement): int|false
+	#[\ReturnTypeWillChange]
 	public function exec($statement) {
 		$statement = $this->preSql($statement);
 		return parent::exec($statement);
 	}
 
+	// PHP8+: PDO::query(string $query, ?int $fetchMode = null, mixed ...$fetchModeArgs): PDOStatement|false
+	#[\ReturnTypeWillChange]
 	public function query($query, $fetch_mode = null, ...$fetch_mode_args) {
 		$query = $this->preSql($query);
 		return $fetch_mode ? parent::query($query, $fetch_mode, ...$fetch_mode_args) : parent::query($query);