Testing the Complexity of Passwords : preg_match « String « PHP






  1. PHP
  2. String
  3. preg_match

Testing the Complexity of Passwords

 
<?php
  $values = array(
    "password",    // Bad
    "P4ssw0rd",    // Good
    );

  foreach ($values as $value) {
    if (! preg_match( '/^(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9]).{8,16}/', $value)) {
      printf("Bad password:  '%s'\n", $value);
    } else { 
      printf("Good password:  '%s'!\n", $value);
    }
  }
?>








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