Add true return type to methods in mysqli

Author: kamil-tekiela

ext/mysqli/mysqli.stub.php

@@ -774,11 +774,10 @@ public function change_user(string $username, #[\SensitiveParameter] string $pas
     public function character_set_name(): string {}
 
     /**
-     * @return true
      * @alias mysqli_close
      * @no-verify
      */
-    public function close() {} // TODO make return type void
+    public function close(): true {} // TODO make return type void
 
     /**
      * @tentative-return-type
@@ -807,11 +806,10 @@ public function connect(
     public function dump_debug_info(): bool {}
 
     /**
-     * @return true
      * @alias mysqli_debug
      * @no-verify Should really be a static method
      */
-    public function debug(string $options) {} // TODO make return type void
+    public function debug(string $options): true {} // TODO make return type void
 
     /**
      * @tentative-return-type
@@ -987,7 +985,6 @@ public function options(int $option, $value): bool {}
     public function set_opt(int $option, $value): bool {}
 
     /**
-     * @return true
      * @alias mysqli_ssl_set
      * @no-verify
      */
@@ -997,7 +994,7 @@ public function ssl_set(
         ?string $ca_certificate,
         ?string $ca_path,
         ?string $cipher_algos
-    ) {} // TODO make return type void
+    ): true {} // TODO make return type void
 
     /**
      * @tentative-return-type
@@ -1144,7 +1141,7 @@ public function fetch_column(int $column = 0): null|int|float|string|false {}
      * @tentative-return-type
      * @alias mysqli_field_seek
      */
-    public function field_seek(int $index): bool {}
+    public function field_seek(int $index): true {}
 
     /**
      * @tentative-return-type
@@ -1240,11 +1237,10 @@ public function bind_param(string $types, mixed &...$vars): bool {}
     public function bind_result(mixed &...$vars): bool {}
 
     /**
-     * @return true
      * @alias mysqli_stmt_close
      * @no-verify
      */
-    public function close() {} // TODO make return type void
+    public function close(): true {} // TODO make return type void
 
     /**
      * @tentative-return-type