Form and Spelling Validation -
(Page 7 of 14 )
In our password strength function, we will require that a password pass three different validations. First, it must meet a specific length. In our case, we are requiring that a password is at least eight characters. Then, we check to be sure that we have a fair amount of unique characters being used. A password that uses the same few characters repeatedly is not secure. Finally, we validate that there are a combination of numbers and letters and that at least one number has a letter on either side of it.
<?php
function checkPassword($password) {
$length = strlen ($password);
if ($length < 8) {
return FALSE;
}
$unique = strlen (count_chars ($password, 3));
$difference = $unique / $length;
echo $difference;
if ($difference < .60) {
return FALSE;
}
return preg_match ("/[A-z]+[0-9]+[A-z]+/", $password);
}
?> |
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