Question

我今天一直在调试一些PHP代码并遇到了一个非常奇怪的问题。我必须检查密码是否有效的功能停止执行该功能。 PHP或Web服务器本身都不会生成错误。

这是有问题的功能：

//Common Registration Functions
function checkPassword($password)
{
    $bLen = strlen($password);
    echo $bLen."\n";
    echo $password."\n";

    //Remove any illegal characters
    $vPWord = preg_replace("/[^\!\@\#\\\$\%\&\*\-\_\,\.a-zA-Z0-9]/","",$password);

    $aLen = strlen($vPWord);
    echo $aLen."\n";
    echo $vPWord."\n";

    //If the password length before santization is different than after then the user used illegal characters
    if ($bLen <> $aLen)
    {
        return "pass_charfail"; 
    }

    echo "pass length check 1 \n";

    //Check sanitized password length
    if (strlen($vPWord) < 6)
    {
        return "pass_short";
    }

    echo "pass length check 2 \n";

    if (strlen($vPWord) > 10)
    {
        return "pass_long";
    }

    echo "pass length check 3 \n";

    //Check password strength
    $strength = 0;

    if (preg_match("/[^a-z]/",$vPWord))
    {
        $strength += 1;
    }

    if (preg_match("/[^A-Z]/",$vPWord))
    {
        $strength += 1;
    }

    if (preg_match("/[^0-9]/",$vPWord))
    {
        $strength += 2;
    }

    if (preg_match("/[^\!\@\#\\\$\%\&\*\-\_\,\.]/",$vPWord))
    {
        $strength += 4;
    }

    if ($strength > 6)
    {
        echo $strength."\n";
        return true;
    }

    else
    {
        echo $strength."\n";
        return "pass_weak";
    }
}

以下是我从错误检查设置中得到的输出（我的webhost不会为整个站点启用php调试，所以我必须通过一个单独的文件，我将在稍后发布代码）：

4

肥大

4

肥大

{＆＃34;成功＆＃34;：＆＃34; NOERROR＆＃34;}

以下是检查错误的方法：

<?php
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
include("register.php");
?>

以下是调用上述函数的函数：

function register($username, $password, $email, $squestion, $sanswer)
{   
    //First check if the email is valid
    $data = eVerify($email);

    //If email is not valid
    if (!$data)
    {
        return "email_fail";    
    }

    //If email is valid then check if it already exists and the verification status
    else
    {       
        //See if the email already exists
        $data = getUID($email,"email",true);

        //echo $data."\n";

        if ($data)
        {

            //Get user ID for later use
            $id = getUID($email,"email",false);

            //If the email exists, see if it has been verified or not
            $data = checkVer($id);

            //echo $data."\n";

            //If email exists but has not been verified
            if (!$data)
            {           
                rSVCode($username,$email,$id);

                return "exists1";
                exit();
            }

            //If email exists and has been verified
            else if ($data)
            {
                return "exists2";
                exit();
            }
        }

        //If email does not exist, continue registration process
        else
        {
            //Check to see if username has been used
            $data = getUID($username,"username",true);

            if ($data)
            {
                return "un_exists";
                exit();
            }

            //Check password strength, chars, and length
            else
            {
                $data = checkPassword($password);

                if ($data)
                {
                    //Create user account
                    $data = cAccount($username, $password, $email, $squestion, $sanswer);

                    if ($data)
                    {
                        //Get user's ID for use later
                        $id = getUID($username,"username",false);

                        //Generate email verification code
                        $data = cVCode($username,$email,$id);

                        //Send verification email
                        $data = sendEVar($email,$username,$data);

                        if ($data)
                        {
                            return "true";
                            exit();
                        }

                        else
                        {
                            return $data;
                            exit();
                        }
                    }

                    else
                    {
                        return $data;
                        exit();
                    }
                }

                else
                {
                    return $data;
                    exit();
                }
            }
        }       
    }
}

Answer 1

三重===确保返回的类型相同。

在你的函数中，你并不总是返回布尔值，有时你会返回字符串，这可能是一个问题。

例如此代码段：

$data = "pass_charfail";
if($data){
  echo 'true';
}else{
  echo 'false';
}

这将回显true，因为$data不是空字符串。

但是以下内容会回显false，因为$data不是true布尔值。

$data = "pass_charfail";
if($data === true){
  echo 'true';
}else{
  echo 'false';
}

您的register功能中的另一个示例

if ($data)
{
   return "true";
   exit();
}

如果此值返回，则false将从以下代码回显：

if($data === true){
  echo 'true';
}else{
  echo 'false';
}

因为$ data现在是一个不是boolean类型的字符串。

希望对你有意义！

Answer 2

我让它再次运作，但我不确定为什么我所做的改变会有所作为。如果有人可以回答这个答案或发表他们自己的答案，我们将不胜感激。

我修复它的方法是在将checkPassword调用到if ($data)后更改if ($data === true)行，并报告了正确的错误消息，而不是声称注册成功。

PHP函数停止执行 - 没有错误

2 个答案: