解析错误：语法错误：意外的'{'

Question

我有这段代码可以处理用户然后将他们重定向到用户主页。

<?php
    $username = $_POST['username'];
    $password = $_POST['pwd'];

    $file = file_get_contents("userdb.html");
    if(!strpos($file, $username)) {
        echo "Your username was not found in our database. Please go back and try again.";
    } else {
        echo "Redirecting...";
        if (md5($password) == !strpos($file, (md5($password))) {
             echo "Redirecting..."
             header ('Location: ./userhome.php')
        } else {
             print "Whoops! Your password seems to be incorrect. Go back and try again."
        }
    }
?>

我收到错误：

Parse error: syntax error, unexpected '{' in userprocess.php on line 11

有人可以告诉我问题吗？我认为这可能是 if 语句中的 if ，但是我能做些什么来替代呢？谢谢。

Answer 1

首先，这一行缺少一个右括号：

if (md5($password) == !strpos($file, (md5($password))) {

计算 ( 和 ) 的数量——它们需要匹配。

当您修复此问题时，您仍然会收到错误，因为 PHP 语句需要以分号结尾。

以下所有行都缺少分号：

echo "Redirecting..."
header ('Location: ./userhome.php')
print "Whoops! Your password seems to be incorrect. Go back and try again."

您需要先修复它们，然后才能在没有语法错误的情况下运行程序。

希望有帮助。

Answer 2

您在该行中缺少右括号：

if (md5($password) == !strpos($file, (md5($password))) {

Answer 3

<?php
    $username = $_POST['username'];
    $password = $_POST['pwd'];

    $file = file_get_contents("userdb.html");
    if(!strpos($file, $username)) {
        echo "Your username was not found in our database. Please go back and try again.";
    } else {
        echo "Redirecting...";
        if (md5($password) == !strpos($file, md5($password))) {
             echo "Redirecting...";
             header ('Location: ./userhome.php');
        } else {
             print "Whoops! Your password seems to be incorrect. Go back and try again.";
        }
    }
?>

Answer 4

更改

if (md5($password) == !strpos($file, (md5($password)))

为

if (md5($password) == !strpos($file, md5($password)))