FIX GH-11587 PHP8.1: Fixed the condition for result set values to be of native type, making it compatible with previous versions.

ext/pdo/pdo_dbh.c

@@ -792,6 +792,9 @@ static bool pdo_dbh_attribute_set(pdo_dbh_t *dbh, zend_long attr, zval *value) /
 				return false;
 			}
 			dbh->stringify = bval;
+			if (dbh->methods->set_attribute) {
+				dbh->methods->set_attribute(dbh, attr, value);
+			}
 			return true;
 
 		case PDO_ATTR_STATEMENT_CLASS: {

ext/pdo_mysql/mysql_driver.c

@@ -459,7 +459,19 @@ static bool pdo_mysql_set_attribute(pdo_dbh_t *dbh, zend_long attr, zval *val)
 			((pdo_mysql_db_handle *)dbh->driver_data)->fetch_table_names = bval;
 			PDO_DBG_RETURN(true);
 
-#ifndef PDO_USE_MYSQLND
+#ifdef PDO_USE_MYSQLND
+		case PDO_ATTR_STRINGIFY_FETCHES:
+			if (!pdo_get_bool_param(&bval, val)) {
+				return false;
+			}
+			unsigned int int_and_float_native = !bval;
+			pdo_mysql_db_handle *H = (pdo_mysql_db_handle *)dbh->driver_data;
+			if (mysql_options(H->server, MYSQLND_OPT_INT_AND_FLOAT_NATIVE, (const char *) &int_and_float_native)) {
+				pdo_mysql_error(dbh);
+				return false;
+			}
+			PDO_DBG_RETURN(true);
+#else
 		case PDO_MYSQL_ATTR_MAX_BUFFER_SIZE:
 			if (!pdo_get_long_param(&lval, val)) {
 				PDO_DBG_RETURN(false);
@@ -891,7 +903,7 @@ static int pdo_mysql_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
 	}
 
 #ifdef PDO_USE_MYSQLND
-	unsigned int int_and_float_native = 1;
+	unsigned int int_and_float_native = !pdo_attr_lval(driver_options, PDO_ATTR_STRINGIFY_FETCHES, dbh->stringify);
 	if (mysql_options(H->server, MYSQLND_OPT_INT_AND_FLOAT_NATIVE, (const char *) &int_and_float_native)) {
 		pdo_mysql_error(dbh);
 		goto cleanup;

ext/pdo_mysql/tests/gh-11587.phpt

@@ -0,0 +1,149 @@
+--TEST--
+GH-11587 PHP8.1: Fixed the condition for result set values to be of native type, making it compatible with previous versions. #11622
+--EXTENSIONS--
+pdo_mysql
+--SKIPIF--
+<?php
+if (!extension_loaded('mysqli') || !extension_loaded('mysqlnd')) {
+    /* Need connection to detect library version */
+    require_once(__DIR__ . DIRECTORY_SEPARATOR . 'mysql_pdo_test.inc');
+    MySQLPDOTest::skip();
+}
+?>
+--FILE--
+<?php
+require_once(__DIR__ . DIRECTORY_SEPARATOR . 'mysql_pdo_test.inc');
+$db = MySQLPDOTest::factory();
+
+$db->exec('DROP TABLE IF EXISTS test');
+
+$createTestTable = <<<SQL
+CREATE TABLE test(
+   id INT,
+  `float_col` FLOAT(3,2) DEFAULT NULL,
+  `double_col` DOUBLE(3,2) DEFAULT NULL,
+  `decimal_col` DECIMAL(3,2) DEFAULT NULL
+)
+SQL;
+
+$db->exec($createTestTable);
+
+$insertTestTable = <<<SQL
+INSERT INTO test(id, float_col, double_col, decimal_col) VALUES(1, 2.60, 3.60, 4.60)
+SQL;
+
+$db->exec($insertTestTable);
+
+// PDO::ATTR_EMULATE_PREPARES = true, PDO::ATTR_STRINGIFY_FETCHES = true
+$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
+$db->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, true);
+$results = $db->query('SELECT * FROM test');
+foreach ($results as $result) {
+    var_dump($result);
+}
+
+// PDO::ATTR_EMULATE_PREPARES = true, PDO::ATTR_STRINGIFY_FETCHES = false
+$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
+$db->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
+$results = $db->query('SELECT * FROM test');
+foreach ($results as $result) {
+    var_dump($result);
+}
+
+// PDO::ATTR_EMULATE_PREPARES = false, PDO::ATTR_STRINGIFY_FETCHES = true
+$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+$db->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, true);
+$results = $db->query('SELECT * FROM test');
+foreach ($results as $result) {
+    var_dump($result);
+}
+
+// PDO::ATTR_EMULATE_PREPARES = false, PDO::ATTR_STRINGIFY_FETCHES = false
+$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+$db->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
+$results = $db->query('SELECT * FROM test');
+foreach ($results as $result) {
+    var_dump($result);
+}
+
+echo 'done!';
+?>
+--CLEAN--
+<?php
+require __DIR__ . '/mysql_pdo_test.inc';
+MySQLPDOTest::dropTestTable();
+?>
+--EXPECT--
+array(8) {
+  ["id"]=>
+  string(1) "1"
+  [0]=>
+  string(1) "1"
+  ["float_col"]=>
+  string(4) "2.60"
+  [1]=>
+  string(4) "2.60"
+  ["double_col"]=>
+  string(4) "3.60"
+  [2]=>
+  string(4) "3.60"
+  ["decimal_col"]=>
+  string(4) "4.60"
+  [3]=>
+  string(4) "4.60"
+}
+array(8) {
+  ["id"]=>
+  int(1)
+  [0]=>
+  int(1)
+  ["float_col"]=>
+  float(2.6)
+  [1]=>
+  float(2.6)
+  ["double_col"]=>
+  float(3.6)
+  [2]=>
+  float(3.6)
+  ["decimal_col"]=>
+  string(4) "4.60"
+  [3]=>
+  string(4) "4.60"
+}
+array(8) {
+  ["id"]=>
+  string(1) "1"
+  [0]=>
+  string(1) "1"
+  ["float_col"]=>
+  string(3) "2.6"
+  [1]=>
+  string(3) "2.6"
+  ["double_col"]=>
+  string(3) "3.6"
+  [2]=>
+  string(3) "3.6"
+  ["decimal_col"]=>
+  string(4) "4.60"
+  [3]=>
+  string(4) "4.60"
+}
+array(8) {
+  ["id"]=>
+  int(1)
+  [0]=>
+  int(1)
+  ["float_col"]=>
+  float(2.6)
+  [1]=>
+  float(2.6)
+  ["double_col"]=>
+  float(3.6)
+  [2]=>
+  float(3.6)
+  ["decimal_col"]=>
+  string(4) "4.60"
+  [3]=>
+  string(4) "4.60"
+}
+done!