Revert "Remove MYSQLI_IS_MARIADB"

This reverts commit 062d0b7.

Author: kocsismate

ext/mysqli/mysqli.stub.php

@@ -610,6 +610,12 @@
  */
 const MYSQLI_TRANS_COR_NO_RELEASE = UNKNOWN;
 
+/**
+ * @var bool
+ * @cname MYSQLI_IS_MARIADB
+ */
+const MYSQLI_IS_MARIADB = UNKNOWN;
+
 final class mysqli_driver
 {
     /** @readonly */

ext/mysqli/mysqli_arginfo.h

@@ -107,6 +107,12 @@ PHP_MYSQLI_EXPORT(zend_object *) mysqli_objects_new(zend_class_entry *);
 #define MYSQLI_REPORT_CLOSE			8
 #define MYSQLI_REPORT_ALL		  255
 
+#ifdef MARIADB_BASE_VERSION
+#define MYSQLI_IS_MARIADB 1
+#else
+#define MYSQLI_IS_MARIADB 0
+#endif
+
 #define MYSQLI_REPORT_MYSQL_ERROR(mysql) \
 if ((MyG(report_mode) & MYSQLI_REPORT_ERROR) && mysql_errno(mysql)) { \
 	php_mysqli_report_error(mysql_sqlstate(mysql), mysql_errno(mysql), mysql_error(mysql)); \

ext/mysqli/mysqli_priv.h

@@ -47,6 +47,7 @@ $expected_constants = array(
     "MYSQLI_GROUP_FLAG" 				=> true,
     "MYSQLI_SERVER_QUERY_NO_GOOD_INDEX_USED"=> true,
     "MYSQLI_SERVER_QUERY_NO_INDEX_USED"	=> true,
+    "MYSQLI_IS_MARIADB"                 => true,
 
     "MYSQLI_TYPE_DECIMAL"				=> true,
     "MYSQLI_TYPE_TINY"					=> true,
@@ -99,7 +100,6 @@ $expected_constants = array(
     "MYSQLI_TRANS_COR_AND_NO_CHAIN"		=> true,
     "MYSQLI_TRANS_COR_RELEASE"			=> true,
     "MYSQLI_TRANS_COR_NO_RELEASE"		=> true,
-    "MYSQLI_OPT_LOAD_DATA_LOCAL_DIR"	=> true,
 );
 
 /* depends on the build - experimental */
@@ -181,6 +181,10 @@ if ($IS_MYSQLND) {
     $expected_constants["MYSQLI_TYPE_JSON"]	= true;
 }
 
+if (($version > 80021 && $constants['mysqli']['MYSQLI_IS_MARIADB']) || $IS_MYSQLND) {
+    $expected_constants['MYSQLI_OPT_LOAD_DATA_LOCAL_DIR'] = true;
+}
+
 $unexpected_constants = array();
 
 foreach ($constants as $group => $consts) {