包含多个SQL语句的php/sqlite:$db->query()有效,$this->db_sqlite->query()失败

我正在创建一个处理各种SQLite操作的类。我的问题是:当我用多个语句生成一个SQL字符串时,当使用标准php=>$db->query()时,它会起作用。但当从一个方法发出相同的请求时,它失败了。似乎OO方法跳过了我的SQL语句中第一个“;”符号之后的所有内容。这是为什么,以及如何修复它?

谢谢。

// Fails - line 2 is not inserted, why?
$this->db_sqlite->query("
    INSERT INTO foo (name) VALUES('Via class multi-lines 1');
    INSERT INTO foo (name) VALUES('Via class multi-lines 2');
");

// Works - both lines are inserted.
$GLOBALS[db]->query("
    INSERT INTO foo (name) VALUES('Direct multi-lines 1');
    INSERT INTO foo (name) VALUES('Direct multi-lines 2');
");

完整例子:

<?php

class db_sqlite {

    function __construct() {
        $this->connect();
    }

    function connect() {
        $GLOBALS[db] = new SQLiteDatabase("dbsqlite.php.db");
    }

    function query($sql) {
        return $GLOBALS[db]->query($sql);
    }

}


class something {

    function setup() {
        $this->db_sqlite = new db_sqlite();

        $this->db_sqlite->query("CREATE TABLE foo ( id INTEGER PRIMARY KEY, name CHAR(255) );");

        // Works
        $this->db_sqlite->query("INSERT INTO foo (name) VALUES('Via class one line 1');");
        $this->db_sqlite->query("INSERT INTO foo (name) VALUES('Via class one line 2');");

        // Fails (why?)
        $this->db_sqlite->query("
            INSERT INTO foo (name) VALUES('Via class multi-lines 1');
            INSERT INTO foo (name) VALUES('Via class multi-lines 2');
        ");

        // Works
        $GLOBALS[db]->query("
            INSERT INTO foo (name) VALUES('Direct multi-lines 1');
            INSERT INTO foo (name) VALUES('Direct multi-lines 2');
        ");

        foreach($this->db_sqlite->query("SELECT * FROM foo") as $v) {
            echo $v[id] . " - " . $v[name] ."<br>";
        }
    }
}

$something = new something();
$something->setup();
?>

输出:
1-通过1级线路1(正确)
2-通过1级线路2(正确) 3-通过类多行1(不正确)
4-直接多线1(正确)
5-直接多线2(正确)