If statement PDO:：execute始终返回FALSE，但查询成功

我试图得到关于数据库中已保存行的确认，但我的条件总是返回FALSE

$conn = new PDO($dir) or die("hovno");
$query = "INSERT INTO sncheck (caseId, snPaper, snBox, snUnit) VALUES ('$caseId', '$snPaper', '$snBox', '$snUnit')";
$prep = $conn->prepare($query);
if($prep->execute()){
    print "DONE";
}
else{
    print "ERROR";
}

它总是触发

else

语句。

更改为：

$req = $conn->prepare("INSERT sncheck users (caseId, snPaper, snBox, insnUnitos, roles_id) VALUES (:login, :password, :email, :infos, :snUnit)")or exit(print_r($conn->errorInfo()));
    $req->execute(array(
            "caseId" => $caseId, 
            "snPaper" => $snPaper,
            "snBox" => $snBox,
            "nUnit" => $nUnit
            ));

---

尝试调试您的查询，如下所示，这样您将得到正确的错误消息-

    $conn = new PDO($dir) or die("hovno");
    $query = "INSERT INTO sncheck (caseId, snPaper, snBox, snUnit) VALUES ('$caseId', '$snPaper', '$snBox', '$snUnit')";
    $prep = $conn->prepare($query);
    if (!$prep) {
        echo "\nPDO::errorInfo():\n";
        print_r($conn->errorInfo());
    }

    if($prep->execute()){
        print "DONE";
    }else{
        echo "\nPDO::errorInfo():\n";
        print_r($conn->errorInfo());
        print "ERROR";
    }

---

如果仍有问题，请告知我，并显示错误消息。

无错误消息。只是数组：PDO:：errorInfo（）：数组（[0]=>00000[1]=>[2]=>）@MélikZarkouna尝试过。它不会输出任何错误或错误。@martinkelleri。所以您需要调试的问题不是来自于查询