douziqian2871
douziqian2871
2014-03-11 21:51
浏览 92
已采纳

需要一个用户小编辑的登录用户名和密码

Firstly, l am very new to creating html and php codes in websites, so if this may seem a trivial question to some on here please appreciate that l require a bit of help. Thanks

I have created a login username and password form for just one user (html form) to work in conjunction to a .php code, it works perfectly.

Current:

  1. It will not allow the form to submit if either username and/or password fileds are blank.
  2. incorrect username and/or password displays the echo ("incorrect"); text on the www.......com/login.php page.
  3. When both username and password filed are entered correctly it redirects to the required page.

EDIT WANTED:

  1. Instead of the displaying the echo ("incorrect"); text on the www.......com/login.php page. I want "incorrect" to to be displayed underneath or within the html form. This saves going back to the original page each time to redo the entries.

Thank you.

HTML FORM: 

  <fieldset>

        <legend>Login</legend>

        <label for="username" >UserName: </label>
        <input type="text" id="username" name="username" required="true" />

        <label for="pass" >Password:</label>
        <input type="password" id="pass" name="pass" required="true"/>

        <input type="submit" name="Submit" value="Submit" />
         <include'login.php'/>
     </fieldset>

</form>

login.php

<?php

       if(($_POST['username'] == "user1") && ($_POST['pass'] == "pass1"))

    { 

     header("Location:http://www.yahoo.com");

    }


    else


    {
      echo ("incorrect");

    }


    ?>
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2条回答 默认 最新

  • doudu161481
    doudu161481 2014-03-11 22:04
    已采纳

    Nest the form inside the else condition then the login is handled in a single file

    <?php
     if(($_POST['username'] == "user1") && ($_POST['pass'] == "pass1"))
  { 
    header("Location:http://www.yahoo.com");
  }
 else
 { ?>

<form name= "login" method="post" accept-charset='UTF-8'>
<fieldset>
    <legend>Login</legend>
    <label for="username" >UserName: </label>
    <input type="text" id="username" name="username" required="true" />
    <label for="pass" >Password:</label>
    <input type="password" id="pass" name="pass" required="true"/>
    <input type="submit" name="Submit" value="Submit" />
     <include'login.php'/>
 </fieldset>
</form>

<?php 
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        echo "incorrect";
      }
 }
?>
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  • duanlinjian5819
    duanlinjian5819 2014-03-11 21:58

    instead of 

    {
echo "incorrent";
}

    type:

    {
header("Location: loginform.php?error=incorrect");
}

    and in your login form .php something like:

    if(isset($_GET['error'])) {
    echo $_GET['error'];
}

    Or even better: you could save your form as a .php . And start the form with 

    if(isset($_POST))

    do you post logic.

    then display the form.

    and in the input vars, type 

    <INPUT value="<?php echo isset($_POST['username']) ? $_POST['username'] :''; ?>">

    EDIT: To summarize:

    <?php if(isset($_POST)) {

     if(check) { 
        header("Location ...);
     } else { 
       $error = 'incorrect';
     }

} else {
   $error = '';
}
?>   
<form action="<?php echo $_SERVER['PHP_SELF'];?>">
<fieldset>

    <legend>Login</legend>

    <label for="username" >UserName: </label>
    <input type="text" value="<?php echo isset($_POST['username']) ? $_POST['username] : ''; ?>" id="username" name="username" required="true" />
    <label for="pass" >Password:</label>
    <input type="password" id="pass" name="pass" required="true"/>

    <input type="submit" name="Submit" value="Submit" />
 </fieldset>

 </form>
 <?php echo $error; ?>
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