dongwu9972 2016-05-19 13:48
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SQL错误:在非对象上调用成员函数fetch_assoc()

I have a problem with this code:

if($sql = $this->database->query("SELECT * FROM warenkorb_artikel WHERE WarenkorbID = '".$erg['WarenkorbID']."'"))
{
    while($erg = $sql->fetch_assoc()) 
    {
        [...]
    }                    
}

I am getting the error:

Fatal error: Call to a member function fetch_assoc() on a non-object in [...] on the lin where the "while($eg = $sql->fetch_assoc())" is.

Can anyone help me?

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1条回答 默认 最新

  • drbhjey445647 2016-05-19 14:12
    关注

    You need to break things down so you can capture any errors you make in a query that are returned by the mysqli API.

    $sql = "SELECT * 
            FROM warenkorb_artikel 
            WHERE WarenkorbID = '{$erg['WarenkorbID']}'";
    
    $result = $this->database->query($sql);
    
    if ( $result === false ) {
        echo $this->database->error;
        exit;
    }
    
    // do you really need a while loop, as it look like you might be
    // selecting a row using a unique key?
    
    while($row = $result->fetch_assoc()){
             [...]
    }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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