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  1. <?php
  2. $correct_username = "admin";
  3. $correct_password = "password123";
  4.  
  5. $username = $_POST['username'];
  6. $password = $_POST['password'];
  7.  
  8. if ($username === $correct_username && $password === $correct_password) {
  9.     echo "Login successful! Welcome, $username.";
  10. } else {
  11.     echo "Invalid username or password.";
  12. }
  13.  
Success #stdin #stdout #stderr 0.02s 26296KB
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stdin
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Standard input is empty
stdout
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Invalid username or password.
stderr
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PHP Notice:  Undefined index: username in /home/3yqPFJ/prog.php on line 5
PHP Notice:  Undefined index: password in /home/3yqPFJ/prog.php on line 6
https://ideone.com/2wkSrR
language:
PHP (php 7.3.5)
created:
12 hours ago
visibility:
public

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