PHP die() clean all page

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A php die function question. when I use die(), it clean all page elements. Is any way to echo error message and not clean all page, It looks like jump to another page when I use

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一生所求

2021-01-27 06:23

You should read your script for top to bottom, including anything outside of <?php ?>. When using die() your script stops then and there.

<?php $a = "something"; ?>
<html>
  <p><?php echo $a?></p>
  <?php die(); ?>
  <p>Never here</p>
</html>

Would output

<html>
  <p>something</p>

In your case do

<?php
if(isset($_POST['submit'])){

    $name=$_POST['name'];
    $password=$_POST['password'];

    //Field check
    if(!$name || !$password) {
       $message="please enter name and password");

    //Check name and password    
    } elseif ($name=="alex" && $password=="alex1") {
       $message="Welcome ". $name;

    } else {
       $message="Username or password incorrect"
    }
?>
<html>
<p>SIGN UP</p>
    <form action="testing.php" method="POST">
            <input type="text" name="name" placeholder="Enter Name" />
            <input type="password" name="password" placeholder="Enter Password"/>
            <input type="submit" name="submit" value="Sign up"/>
    </form>
    <div><?php echo $message?></div>
</html>

Also note that I'm using '==' to compare, not '='.

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