Question

有人可以帮助我解决这个问题，该问题表明致命错误：不能对表达式的结果使用isset（）（你可以使用＆＃34; null！== expression＆＃34;而不是）我也可以使用如果条件很重要？

if(isset($_POST['dateLoanGrantedMonth']) && isset($_POST['dateLoanGrantedDay']) && isset($_POST['dateLoanGrantedYear']) && isset($_POST['maturityMonth']) && isset($_POST['maturityDay']) && isset($_POST['maturityYear']) && isset($_POST['expiryMonth']) && isset($_POST['expiryDay']) && isset($_POST['expiryYear']) && isset($_POST['mr']) && isset($_POST['mrs']) && isset($_POST['ms']) && isset($_POST['name']) && isset($_POST['resident']) && isset($_POST['loanInWords']) && isset($_POST['pesos']) && isset($_POST['interest']) && isset($_POST['daysMonths']) && isset($_POST['pesosInWords']) && isset($_POST['pesos2']) && isset($_POST['penaltyInterest']) && isset($_POST['itemType']) && isset($_POST['grams']) && isset($_POST['idPresented'] && isset($_POST['contactNumber']) && isset($_POST['birthdayMonth']) && isset($_POST['birthdayDay']) && isset($_POST['birthdayYear']) && isset($_POST['male']) && isset($_POST['female']) && isset($_POST['height']) && isset($_POST['weight']) && isset($_POST['citizenship']) && isset($_POST['complexion']) && isset($_POST['principal']) && isset($_POST['interestAbsoluteAmount']) && isset($_POST['serviceChargeAmount']) && isset($_POST['netProceeds']) && isset($_POST['perAnum']) && isset($_POST['perMonth']) && isset($_POST['others']))
{
    $dateLoanGrantedMonth = mysqli_real_escape_string($connection, $_POST['dateLoanGrantedMonth']);
    $dateLoanGrantedDay = mysqli_real_escape_string($connection, $_POST['dateLoanGrantedDay']);
    $dateLoanGrantedYear = mysqli_real_escape_string($connection, $_POST['dateLoanGrantedYear']);
    $maturityMonth = mysqli_real_escape_string($connection, $_POST['maturityMonth']);
    $maturityDay = mysqli_real_escape_string($connection, $_POST['maturityDay']);
    $maturityYear = mysqli_real_escape_string($connection, $_POST['maturtyYear']);
    $expiryMonth = mysqli_real_escape_string($connection, $_POST['expiryMonth']);
    $expiryDay = mysqli_real_escape_string($connection, $_POST['expiryDay']);
    $expiryYear = mysqli_real_escape_string($connection, $_POST['expiryYear']);
    $mr = mysqli_real_escape_string($connection, $_POST['mr']);
    $mrs = mysqli_real_escape_string($connection, $_POST['mrs']);
    $ms = mysqli_real_escape_string($connection, $_POST['ms']);
    $name = mysqli_real_escape_string($connection, $_POST['name']);
    $resident = mysqli_real_escape_string($connection, $_POST['resident']);
    $loanInWords = mysqli_real_escape_string($connection, $_POST['loanInWords']);
    $pesos = mysqli_real_escape_string($connection, $_POST['pesos']);
    $interest = mysqli_real_escape_string($coonnection, $_POST['interest']);
    $daysMonths = mysqli_real_escape_string($coonnection, $_POST['daysMonths']);
    $pesosInWords = mysqli_real_escape_string($connection, $_POST['pesosInWords']);
    $pesos2 = mysqli_real_escape_string($connection, $_POST['pesos2']);
    $penaltyInterest = mysqli_real_escape_string($connection, $_POST['penaltyInterest']);
    $itemType = mysqli_real_escape_string($connection, $_POST['itemType']);
    $grams = mysqli_real_escape_string($connection, $_POST['grams']);
    $idPresented = mysqli_real_escape_string($connection, $_POST['idPresented']);
    $contactNumber =  mysqli_real_escape_string($connection, $_POST['contactNumber']);
    $birthdayMonth = mysqli_real_escape_string($connection, $_POST['birthdayMonth']);
    $birthdayDay = mysqli_real_escape_string($connection, $_POST['birthdayDay']);
    $birthdayYear = mysqli_real_escape_string($connection, $_POST['birthdayYear']);
    $male = mysqli_real_escape_string($connection, $_POST['male']);
    $female = mysqli_real_escape_string($connection, $_POST['female']);
    $height = mysqli_real_escape_string($connection, $_POST['height']);
    $weight = mysqli_real_escape_string($connection, $_POST['weight']);
    $citizenship = mysqli_real_escape_string($connection, $_POST['citizenship']);
    $complexion = mysqli_real_escape_string($connection, $_POST['complexion']);
    $principal = mysqli_real_escape_string($connection, $_POST['principal']);
    $interestAbsoluteAmount = mysqli_real_escape_string($connection,$_POST['interestAbsoluteAmount']);
    $serviceChargeAmount = mysqli_real_escape_string($connection, $_POST['serviceChargeAmount']);
    $netProceeds = mysqli_real_escape_string($connection, $_POST['netProceeds']);
    $perAnum = mysqli_real_escape_string($connection, $_POST['perAnum']);
    $perMonth = mysqli_real_escape_string($connection, $_POST['perMonth']);
    $others = mysqli_real_escape_string($connection, $_POST['others']);

Answer 1

你的代码太长了，你无法真正阅读它：

isset($_POST['idPresented']

错过了他的')'所以更改

isset($_POST['idPresented']加入isset($_POST['idPresented'])

当我刷新页面时，错误说：＆＃34;不能对表达式的结果使用isset（）（你可以使用＆＃34; null！== expression＆＃34;而不是）＆＃34;

1 个答案: