PHPStan: Fix level 4 errors

adminer/drivers/mysql.inc.php

@@ -444,7 +444,7 @@ if (!defined('Adminer\DRIVER')) {
 
 	/** Connect to the database
 	* @param array{string, string, string} [$server, $username, $password]
-	* @return mixed Db or string for error
+	* @return string|Db string for error
 	*/
 	function connect($credentials) {
 		global $drivers;
@@ -1073,47 +1073,12 @@ if (!defined('Adminer\DRIVER')) {
 	/** Get approximate number of rows
 	* @param TableStatus
 	* @param list<string>
-	* @return numeric-string|void null if approximate number can't be retrieved
+	* @return numeric-string|null null if approximate number can't be retrieved
 	*/
 	function found_rows($table_status, $where) {
 		return ($where || $table_status["Engine"] != "InnoDB" ? null : $table_status["Rows"]);
 	}
 
-	/* Not used is MySQL but checked in compile.php:
-	/** Get user defined types
-	* @return string[] [$id => $name]
-	function types() {
-		return array();
-	}
-
-	/** Get values of user defined type
-	* @param int
-	* @return string
-	function type_values($id) {
-		return "";
-	}
-
-	/** Get existing schemas
-	* @return list<string>
-	function schemas() {
-		return array();
-	}
-
-	/** Get current schema
-	* @return string
-	function get_schema() {
-		return "";
-	}
-
-	/** Set current schema
-	* @param string
-	* @param Db
-	* @return bool
-	function set_schema($schema, $connection2 = null) {
-		return true;
-	}
-	*/
-
 	/** Get SQL command to create table
 	* @param string
 	* @param bool
@@ -1241,4 +1206,44 @@ if (!defined('Adminer\DRIVER')) {
 	function max_connections() {
 		return get_val("SELECT @@max_connections");
 	}
+
+	// Not used is MySQL but checked in compile.php:
+
+	/** Get user defined types
+	* @return string[] [$id => $name]
+	*/
+	function types() {
+		return array();
+	}
+
+	/** Get values of user defined type
+	* @param int
+	* @return string
+	*/
+	function type_values($id) {
+		return "";
+	}
+
+	/** Get existing schemas
+	* @return list<string>
+	*/
+	function schemas() {
+		return array();
+	}
+
+	/** Get current schema
+	* @return string
+	*/
+	function get_schema() {
+		return "";
+	}
+
+	/** Set current schema
+	* @param string
+	* @param Db
+	* @return bool
+	*/
+	function set_schema($schema, $connection2 = null) {
+		return true;
+	}
 }

adminer/drivers/pgsql.inc.php

@@ -854,7 +854,7 @@ AND typelem = 0"
 		}
 		$fields = fields($table);
 
-		if (!$status || empty($fields)) {
+		if (count($status) < 2 || empty($fields)) {
 			return false;
 		}
 

adminer/include/auth.inc.php

@@ -61,6 +61,7 @@ function check_invalid_login() {
 			break;
 		}
 	}
+	/** @var array{int, int} */
 	$invalid = idx($invalids, $adminer->bruteForceKey(), array());
 	$next_attempt = ($invalid[1] > 29 ? $invalid[0] - time() : 0); // allow 30 invalid attempts
 	if ($next_attempt > 0) { //! do the same with permanent login

adminer/include/editing.inc.php

@@ -124,7 +124,7 @@ function referencable_primary($self) {
 
 /** Print SQL <textarea> tag
 * @param string
-* @param string or array in which case [0] of every element is used
+* @param string|list<array{string}>
 * @param int
 * @param int
 * @return void

adminer/include/functions.inc.php

@@ -174,7 +174,7 @@ function sid() {
 * @param string
 * @param string
 * @param string
-* @param string
+* @param ?string
 * @return void
 */
 function set_password($vendor, $server, $username, $password) {
@@ -185,7 +185,7 @@ function set_password($vendor, $server, $username, $password) {
 }
 
 /** Get password from session
-* @return string or null for missing password or false for expired password
+* @return string|false|null null for missing password, false for expired password
 */
 function get_password() {
 	$return = get_session("pwds");
@@ -549,7 +549,7 @@ class Queries {
 
 /** Execute and remember query
 * @param string end with ';' to use DELIMITER
-* @return Result
+* @return Result|bool
 */
 function queries($query) {
 	global $connection;
@@ -902,7 +902,7 @@ function rand_string() {
 }
 
 /** Format value to use in select
-* @param string
+* @param string|string[]
 * @param string
 * @param Field
 * @param int
@@ -945,7 +945,7 @@ function select_value($val, $link, $field, $text_length) {
 }
 
 /** Check whether the string is e-mail address
-* @param string
+* @param ?string
 * @return bool
 */
 function is_mail($email) {

adminer/select.inc.php

@@ -337,6 +337,7 @@ if (!$columns && support("table")) {
 			$rank = 1;
 			foreach ($rows[0] as $key => $val) {
 				if (!isset($unselected[$key])) {
+					/** @var array{fun?:string, col?:string} */
 					$val = idx($_GET["columns"], key($select)) ?: array();
 					$field = $fields[$select ? ($val ? $val["col"] : current($select)) : $key];
 					$name = ($field ? $adminer->fieldName($field, $rank) : ($val["fun"] ? "*" : h($key)));