本篇主要是讲解一些最简单的验证知识
效果图
bookmark_fns.php
data_valid_fns.php
$value) { if ((!isset($key)) || ($value == '')) { return false; } } return true;}// Valid emailfunction valid_email($address) { if (ereg('^[a-zA-Z0-9_\.\-]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$', $address)) { return true; }else { return false; }}?> db_fns.php
user_auth_fns.php
query("select * from user where username = '".$username."'"); if (!$results) { throw new Exception("Could not execute query", 1); } if ($results -> num_rows > 0) { throw new Exception("That username is taken - go back and choose another one.", 1); } $results = $conn -> query("insert into user values ('".$username."', sha1('".$email."'), '".$password."')"); if (!$results) { throw new Exception('Could not register you in database - please try again later.'); } return true;}// Log in function login($username, $password) { $conn = db_connect(); $results = $conn -> query("select * from user where username = '".$username."' and passwd = sha1('".$password."')"); if (!$results) { throw new Exception('Could not log you in.'); } if ($results -> num_rows > 0) { return true; }else { throw new Exception('Could not log you in.'); }}// Check valid user function check_valid_user() { if (isset($_SESSION['valid_user'])) { echo "Logged in as ".$_SESSION['valid_user']."."; }else { do_html_header('Problem:'); echo "You are not logged in."; do_html_url('login.php', 'Login'); do_html_foot(); exit; }}// change password function change_password($username, $old_password, $new_password) { login($username, $old_password); $conn = db_connect(); $result = $conn -> query("update user set passwd = sha1('".$new_password."') where username = '".$username."'"); if (!$result) { throw new Exception('Password could not be changed.'); } else { return true; // changed successfully }}function get_random_word($min_length, $max_length) {// grab a random word from dictionary between the two lengths// and return it // generate a random word $word = ''; // remember to change this path to suit your system $dictionary = '/usr/dict/words'; // the ispell dictionary $fp = @fopen($dictionary, 'r'); if(!$fp) { return false; } $size = filesize($dictionary); // go to a random location in dictionary $rand_location = rand(0, $size); fseek($fp, $rand_location); // get the next whole word of the right length in the file while ((strlen($word) < $min_length) || (strlen($word)>$max_length) || (strstr($word, "'"))) { if (feof($fp)) { fseek($fp, 0); // if at end, go to start } $word = fgets($fp, 80); // skip first word as it could be partial $word = fgets($fp, 80); // the potential password } $word = trim($word); // trim the trailing \n from fgets return $word;}function reset_password($username) {// set password for username to a random value// return the new password or false on failure // get a random dictionary word b/w 6 and 13 chars in length $new_password = get_random_word(6, 13); if($new_password == false) { throw new Exception('Could not generate new password.'); } // add a number between 0 and 999 to it // to make it a slightly better password $rand_number = rand(0, 999); $new_password .= $rand_number; // set user's password to this in database or return false $conn = db_connect(); $result = $conn->query("update user set passwd = sha1('".$new_password."') where username = '".$username."'"); if (!$result) { throw new Exception('Could not change password.'); // not changed } else { return $new_password; // changed successfully }}function notify_password($username, $password) {// notify the user that their password has been changed $conn = db_connect(); $result = $conn->query("select email from user where username='".$username."'"); if (!$result) { throw new Exception('Could not find email address.'); } else if ($result->num_rows == 0) { throw new Exception('Could not find email address.'); // username not in db } else { $row = $result->fetch_object(); $email = $row->email; $from = "From: support@phpbookmark \r\n"; $mesg = "Your PHPBookmark password has been changed to ".$password."\r\n" ."Please change it next time you log in.\r\n"; if (mail($email, 'PHPBookmark login information', $mesg, $from)) { return true; } else { throw new Exception('Could not send email.'); } }}?> url_fns.php
query("select bm_URL from bookmark where username = '" . $username . "'"); if (!$results) { return false; } $url_array = array(); for ($i = 1;$row = $results -> fetch_row();++$i) { $url_array[$i] = $row[0]; } return $url_array;}// Add url to dbfunction add_bm($new_url) { echo "Attempting to add ".htmlspecialchars($new_url).""; $valid_user = $_SESSION['valid_user']; $conn = db_connect(); $results = $conn -> query(" select * from bookmark where username = '".$valid_user."' and bm_URL = '".$new_url."'"); if ($results && ($results -> num_rows > 0)) { throw new Exception("Bookmark already exists.", 1); } $insert_result = $conn -> query("insert into bookmark values ('".$valid_user."', '".addslashes($new_url)."')"); if (!$insert_result) { throw new Exception("Bookmark could not be inserted.", 1); } return true;}// Delete url function delete_bm($user, $url) { $conn = db_connect(); $results = $conn -> query(" delete from bookmark where username = '".$user."' and bm_URL = '".$url."'"); if (!$results) { throw new Exception("Bookmark could not be deleted.", 1); } return true; }function recommend_urls($valid_user, $popularity = 1) { $conn = db_connect(); // $query = "select bm_URL // from bookmark // where username in // (select distinct(b2.username) // from bookmark b1, bookmark b2 // where b1.username='".$valid_user."' // and b1.username != b2.username // and b1.bm_URL = b2.bm_URL) // and bm_URL not in // (select bm_URL // from bookmark // where username='".$valid_user."') // group by bm_url // having count(bm_url)>".$popularity;$query = "select bm_URL from bookmark where username in (select distinct(b2.username) from bookmark b1, bookmark b2 where b1.username='".$valid_user."' and b1.username != b2.username and b1.bm_URL = b2.bm_URL) and bm_URL not in (select bm_URL from bookmark where username='".$valid_user."') group by bm_url having count(bm_url)>".$popularity; if (!($result = $conn->query($query))) { throw new Exception('Could not find any bookmarks to recommend.'); } if ($result->num_rows==0) { throw new Exception('Could not find any bookmarks to recommend.'); } $urls = array(); // build an array of the relevant urls for ($count=0; $row = $result->fetch_object(); $count++) { $urls[$count] = $row->bm_URL; } return $urls;}?> output_fns.php
<?php echo $title;?> 
PHPbookmark
- Store your bookmarks online with us!
- See what other users use!
- Share your favorite links with others!
Home | Add BM | Delete BM | "; } else { echo "Delete BM | "; }?>Change passwordRecommend URLs to me | Logout
login.php
logout.php
'; do_html_url('login.php', 'Login'); }else { echo 'Could not log you out.'; } }else { echo 'You are not logged in ,so have not been logged out.'; do_html_url('login.php', 'Login');}do_html_footer();?> register_form.php
<?php
require_once('bookmark_fns.php');do_html_header('User Registration');display_registration_form();do_html_footer();?> register_new.php
16)) { throw new Exception("Your password must be between 6 and 16 characters - please go back and try again.", 1); } register($username, $passwd, $email); $_SESSION['valid_user'] = $username; do_html_header('Rigistration successful'); do_html_url('member.php', 'Go to members page'); do_html_footer(); } catch (Exception $e) { do_html_header('Problem: '); echo $e -> getMessage(); do_html_footer(); exit();}?> forgot_form.php
forgot_passwd.php
"; }catch(Exception $e){ echo "Your password could not be reset - please try again later."; } do_html_url('login.php', 'Login'); do_html_footer();?> change_passwd_form.php
change_passed.php
16)) { throw new Exception("Your password must be between 6 and 16 characters - please go back and try again.", 1); } change_password($_SESSION['valid_user'], $old_passwd, $new_passwd2); echo 'Password changed.'; }catch(Exception $e) { echo $e -> getMessage(); } display_user_menu(); do_html_footer();?> add_bm_form.php
add_bms.php
getMessage();} display_user_menu(); do_html_footer();?>
delete_bms.php
You have not chosen any bookmarks to delete. Please try again."; display_user_menu(); do_html_footer(); exit;}else { if (count($del_me) > 0) { foreach ($del_me as $url) { if (delete_bm($valid_user, $url)) { echo "Deleted ".htmlspecialchars($url).""; }else { echo "Could not deleted ".htmlspecialchars($url).""; } } }else { echo "No bookmarks selected for deletion."; }}if ($mks = get_user_urls($_SESSION['valid_user'])) { display_user_urls($mks);} display_user_menu(); do_html_footer();?> recommend.php
getMessage();} display_user_menu(); do_html_footer();?>