Fix GH-20122: getColumnMeta() for JSON-column in MySQL

While at it, also add VECTOR.

Closes GH-20143.

NEWS

@@ -29,6 +29,7 @@ PHP                                                                        NEWS
 - MySQLnd:
   . Fixed bug GH-8978 (SSL certificate verification fails (port doubled)).
     (nielsdos)
+  . Fixed bug GH-20122 (getColumnMeta() for JSON-column in MySQL). (nielsdos)
 
 - Opcache:
   . Fixed bug GH-20081 (access to uninitialized vars in preload_load()).

ext/mysqli/tests/mysqli_fetch_field_types.phpt

@@ -94,6 +94,7 @@ require_once 'skipifconnectfailure.inc';
         MYSQLI_TYPE_NEWDATE => 'MYSQLI_TYPE_NEWDATE - TODO add testing',
         MYSQLI_TYPE_INTERVAL => 'MYSQLI_TYPE_INTERVAL - TODO add testing',
         MYSQLI_TYPE_GEOMETRY => 'MYSQLI_TYPE_GEOMETRY - TODO add testing',
+        MYSQLI_TYPE_JSON => array('JSON', '[]'),
     );
 
     $datatypes[MYSQLI_TYPE_NEWDECIMAL] = array('DECIMAL', '1.1');

ext/pdo_mysql/mysql_statement.c

@@ -748,6 +748,12 @@ static char *type_to_name_native(int type) /* {{{ */
 		PDO_MYSQL_NATIVE_TYPE_NAME(DATE)
 #ifdef FIELD_TYPE_NEWDATE
 		PDO_MYSQL_NATIVE_TYPE_NAME(NEWDATE)
+#endif
+#ifdef FIELD_TYPE_VECTOR
+		PDO_MYSQL_NATIVE_TYPE_NAME(VECTOR)
+#endif
+#ifdef FIELD_TYPE_JSON
+		PDO_MYSQL_NATIVE_TYPE_NAME(JSON)
 #endif
 		PDO_MYSQL_NATIVE_TYPE_NAME(TIME)
 		PDO_MYSQL_NATIVE_TYPE_NAME(DATETIME)

ext/pdo_mysql/tests/gh20122.phpt

@@ -0,0 +1,33 @@
+--TEST--
+GH-20122 (getColumnMeta() for JSON-column in MySQL)
+--EXTENSIONS--
+pdo
+pdo_mysql
+--SKIPIF--
+<?php
+require __DIR__ . '/config.inc';
+require __DIR__ . '/../../../ext/pdo/tests/pdo_test.inc';
+PDOTest::skip();
+?>
+--FILE--
+<?php
+require __DIR__ . '/config.inc';
+require __DIR__ . '/../../../ext/pdo/tests/pdo_test.inc';
+$db = PDOTest::test_factory(__DIR__ . '/common.phpt');
+
+$db->exec('CREATE TABLE test (bar JSON)');
+$db->exec('INSERT INTO test VALUES("[]")');
+
+$stmt = $db->query('SELECT * from test');
+$meta = $stmt->getColumnMeta(0);
+
+// Note: JSON is an alias for LONGTEXT on MariaDB!
+echo $meta['native_type'], "\n";
+?>
+--CLEAN--
+<?php
+require __DIR__ . '/mysql_pdo_test.inc';
+MySQLPDOTest::dropTestTable();
+?>
+--EXPECTF--
+%r(JSON|LONGTEXT)%r