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--TEST--
Bug #42499 (Multi-statement execution via PDO::exec() makes connection unusable)
--EXTENSIONS--
pdo_mysql
--SKIPIF--
<?php
require_once __DIR__ . '/inc/mysql_pdo_test.inc';
MySQLPDOTest::skip();
?>
--FILE--
<?php
require_once __DIR__ . '/inc/mysql_pdo_test.inc';
$db = MySQLPDOTest::factory();
function bug_42499($db) {
$db->exec("DROP TABLE IF EXISTS test_42499");
$db->exec("CREATE TABLE test_42499(id CHAR(1)); INSERT INTO test_42499(id) VALUES ('a')");
$stmt = $db->query('SELECT id AS _id FROM test_42499');
var_dump($stmt->fetchAll(PDO::FETCH_ASSOC));
// You must not use exec() to run statements that create a result set!
$db->exec('SELECT id FROM test_42499');
// This will bail at you because you have not fetched the SELECT results: this is not a bug!
$db->exec("INSERT INTO test_42499(id) VALUES ('b')");
}
print "Emulated Prepared Statements...\n";
$db = MySQLPDOTest::factory();
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, 1);
$db->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, 1);
bug_42499($db);
print "Native Prepared Statements...\n";
$db = MySQLPDOTest::factory();
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, 0);
$db->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, 1);
bug_42499($db);
print "done!";
?>
--CLEAN--
<?php
require_once __DIR__ . '/inc/mysql_pdo_test.inc';
$db = MySQLPDOTest::factory();
$db->exec("DROP TABLE IF EXISTS test_42499");
?>
--EXPECTF--
Emulated Prepared Statements...
array(1) {
[0]=>
array(1) {
["_id"]=>
string(1) "a"
}
}
Warning: PDO::exec(): SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. in %s on line %d
Native Prepared Statements...
array(1) {
[0]=>
array(1) {
["_id"]=>
string(1) "a"
}
}
Warning: PDO::exec(): SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. in %s on line %d
done!
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