Valider adgangskode

((?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,10})

<?php
    $pw = array(
        'eksperten',
        'Eksperten',
        'Eksperten1',
        'Ekspertenpw2',
        'Exppw3',
        'Exp4'
    );
    
    foreach ($pw as $pass) {
        echo '<strong>' . $pass . '</strong> ';
        
        if (preg_match('#^((?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,10})$#', $pass)) {
            echo 'is valid.<br />';
        } else {
            echo 'is not valid.<br />';
        }
    }
?>

((?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,10})

((?=.*\d)(?=.*[a-z])(?=.*[A-Z])\w{6,10})

((?=.*\d)(?=.*[a-z])(?=.*[A-Z])[a-zA-Z\d]{6,10})