validate-password.php

<?php
$postData = $this->input->post();
if($postData && isset($postData['npassw']) && isset($postData['npassw2']) && !empty($postData['npassw']) && !empty($postData['npassw2'])){
    $preventPassw = ['password','password1','abcdef','abc123','abcd12','abcd123','abcde123','qwerty','qwerty12','qwerty123','rahasia','rahasiaku','akucintakamu'];
    $ch = (int)$postData['npassw'];
    $isNumber = $ch==$postData['npassw'];
    $cAN = preg_replace("/[^A-Za-z0-9]/", '', $postData['npassw']);
    if($postData['npassw']!=$postData['npassw2']){
        $params['type'] = 'warning';
        $params['message'] = 'Password tidak sama!';
    }elseif(strlen($postData['npassw'])<6){
        $params['type'] = 'warning';
        $params['message'] = 'Gunakan password yang kuat, minimal 6 karakter!';
    }elseif($isNumber){
        $params['type'] = 'warning';
        $params['message'] = 'Gunakan password yang kuat, lakukan kombinasi huruf besar, huruf kecil, angka dan simbol!';
    }elseif(in_array(strtolower($postData['npassw']), $preventPassw)){
        $params['type'] = 'warning';
        $params['message'] = 'Gunakan password yang kuat, password yang Anda gunakan terlalu mudah ditebak!';
    }else{
        $upd = $this->AuthModel->updatePassword(getID($postData['uid']), $postData['npassw']);
        if($upd){
            $params['type'] = 'success';
            $params['message'] = '<strong>Password berhasil diubah.</strong><br>Silahkan login dengan password baru Anda!';
        }else{
            $params['type'] = 'warning';
            $params['message'] = 'Password gagal diubah. SIlahkan coba lagi!';
        }
    }
    echo json_encode($params);
    exit;
}