enforce some stricter type checking for loggers

classes/logger/sql.php

@@ -1,17 +1,15 @@
 <?php
-class Logger_SQL {
+class Logger_SQL implements Logger_Adapter {
 
 	private $pdo;
 
-	function log_error($errno, $errstr, $file, $line, $context) {
+	function log_error(int $errno, string $errstr, string $file, int $line, $context) {
 
 		// separate PDO connection object is used for logging
 		if (!$this->pdo) $this->pdo = Db::instance()->pdo_connect();
 
 		if ($this->pdo && get_schema_version() > 117) {
 
-			$owner_uid = $_SESSION["uid"] ?? null;
-
 			// limit context length, DOMDocument dumps entire XML in here sometimes, which may be huge
 			$context = mb_substr($context, 0, 8192);
 
@@ -37,7 +35,7 @@ class Logger_SQL {
 			$sth = $this->pdo->prepare("INSERT INTO ttrss_error_log
 				(errno, errstr, filename, lineno, context, owner_uid, created_at) VALUES
 				(?, ?, ?, ?, ?, ?, NOW())");
-			$sth->execute([$errno, $errstr, $file, $line, $context, $owner_uid]);
+			$sth->execute([$errno, $errstr, $file, $line, $context, $_SESSION["uid"] ?? null]);
 
 			return $sth->rowCount();
 		}