PHP PDO SQLite准备的语句问题 [英] PHP PDO SQLite prepared statement issues
问题描述
我正在尝试将PHP应用程序从MySQL迁移到SQLite,并且某些曾经起作用的东西现在只是停止工作了.我通过自定义数据库包装器类使用PDO(该类是单例,这样做似乎很合逻辑).
I am trying to migrate a PHP app from MySQL to SQLite, and some things that used to work, simply stopped working now. I am using PDO through a custom database wrapper class (the class is a singleton, seems logical to do it like that).
问题: 尝试对准备好的语句执行查询时,它引发致命错误:在非对象上调用成员函数execute()...".
The problem: When trying to execute a query on a prepared statement, it throws a "fatal error: Call to a member function execute() on a non-object ...".
相关代码(经过几个小时的var_dumps和try-catch之后,将其范围缩小了):
Relevant code (narrowed it down to this, after some hours of var_dumps and try-catch):
连接字符串:
$this->connection = new PDO("sqlite:"._ROOT."/Storage/_sqlite/satori.sdb");
很明显,这里的$ connection变量是该类的私有变量.
Obviously, the $connection variable here is a private variable from the class.
错误在这里发生(在应该执行数据库插入的函数内部):
The error happens here (inside a function that is supposed to perform database insert):
try{
$statement = self::getInstance()->connection->prepare($sql);
}catch (PDOException $e){
print $e->getMessage;
}
try{
var_dump($statement);
$statement->execute($input);
}catch (Exception $e){
print $e->getMessage();
}
更准确地说,是在我尝试$ statement-> execute($ input)时发生的.
More accurately, it happens when I try to $statement->execute($input).
任何帮助表示赞赏.谢谢.
Any help appreciated. Thanks.
推荐答案
正在准备语句时,您可能会遇到mySQL错误,但是您没有将PDO配置为
You are probably getting a mySQL error when the statement is being prepared, but you don't have PDO configured to throw an exception in case of an error.
<?php
$dbh = new PDO( /* your connection string */ );
$dbh->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
// . . .
?>
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