我遇到了一个错误，我的注册是允许用户注册带有空格的用户名，即“用户名”，而它应该只是没有空格的“用户名”。
我已经尝试搜索和阅读许多教程，但大多数都对我没有帮助。
谁能指出我正确的工作教程方向，或者告诉我我做错了什么。
注册页面
<?
session_start();
include("config.php");
include("clean.php");
$act = clean($_GET[act]);
$sqlcontent = mysql_query("select * from usr_config");
$content = mysql_fetch_array($sqlcontent);
$rand = rand(0,999);
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link rel="stylesheet" href="css.css" type="text/css" />
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Usersystem Register Page • <? echo("$content[site]");?></title>
</head>
<body>
<tr>
<? if($content[regen]==1) {
if($act!=register)
{ ?>
<form action="register_new.php?act=register" method="post">
<div align="center">Username:<br />
<input type="text" name="username" class="login" maxlength="20" />
<br />
<br />
Password:<br />
<input type="password" name="password" />
<br />
<br />
Email Address:<br />
<input type="text" name="email" />
<br />
<br />
Country:<br />
<SELECT name="countrywhere">
<option value="Afghanistan">Afghanistan</option>
<option value="Åland Islands">Åland Islands</option>
<option value="Albania">Albania</option>
<option value="Algeria">Algeria</option>
<option value="American Samoa">American Samoa</option>
<option value="Andorra">Andorra</option>
<option value="Angola">Angola</option>
<option value="Anguilla">Anguilla</option>
<option value="Antarctica">Antarctica</option>
<option value="Antigua and Barbuda">Antigua and Barbuda</option>
<option value="Argentina">Argentina</option>
<option value="Armenia">Armenia</option>
<option value="Aruba">Aruba</option>
<option value="Australia">Australia</option>
<option value="Austria">Austria</option>
<option value="Azerbaijan">Azerbaijan</option>
<option value="Bahamas">Bahamas</option>
<option value="Bahrain">Bahrain</option>
<option value="Bangladesh">Bangladesh</option>
<option value="Barbados">Barbados</option>
<option value="Belarus">Belarus</option>
<option value="Belgium">Belgium</option>
<option value="Belize">Belize</option>
<option value="Benin">Benin</option>
<option value="Bermuda">Bermuda</option>
<option value="Bhutan">Bhutan</option>
<option value="Bolivia">Bolivia</option>
<option value="Bosnia and Herzegovina">Bosnia and Herzegovina</option>
<option value="Botswana">Botswana</option>
<option value="Bouvet Island">Bouvet Island</option>
<option value="Brazil">Brazil</option>
<option value="British Indian Ocean Territory">British Indian Ocean Territory</option>
<option value="Brunei Darussalam">Brunei Darussalam</option>
<option value="Bulgaria">Bulgaria</option>
<option value="Burkina Faso">Burkina Faso</option>
<option value="Burundi">Burundi</option>
<option value="Cambodia">Cambodia</option>
<option value="Cameroon">Cameroon</option>
<option value="Canada">Canada</option>
<option value="Cape Verde">Cape Verde</option>
<option value="Cayman Islands">Cayman Islands</option>
<option value="Central African Republic">Central African Republic</option>
<option value="Chad">Chad</option>
<option value="Chile">Chile</option>
<option value="China">China</option>
<option value="Christmas Island">Christmas Island</option>
<option value="Cocos (Keeling) Islands">Cocos (Keeling) Islands</option>
<option value="Colombia">Colombia</option>
<option value="Comoros">Comoros</option>
<option value="Congo">Congo</option>
<option value="Congo, The Democratic Republic of the">Congo, The Democratic Republic of the</option>
<option value="Cook Islands">Cook Islands</option>
<option value="Costa Rica">Costa Rica</option>
<option value="Côte d'Ivoire">Côte d'Ivoire</option>
<option value="Croatia">Croatia</option>
<option value="Cuba">Cuba</option>
<option value="Cyprus">Cyprus</option>
<option value="Czech Republic">Czech Republic</option>
<option value="Denmark">Denmark</option>
<option value="Djibouti">Djibouti</option>
<option value="Dominica">Dominica</option>
<option value="Dominican Republic">Dominican Republic</option>
<option value="Ecuador">Ecuador</option>
<option value="Egypt">Egypt</option>
<option value="El Salvador">El Salvador</option>
<option value="Equatorial Guinea">Equatorial Guinea</option>
<option value="Eritrea">Eritrea</option>
<option value="Estonia">Estonia</option>
<option value="Ethiopia">Ethiopia</option>
<option value="Falkland Islands (Malvinas)">Falkland Islands (Malvinas)</option>
<option value="Faroe Islands">Faroe Islands</option>
<option value="Fiji">Fiji</option>
<option value="Finland">Finland</option>
<option value="France">France</option>
<option value="French Guiana">French Guiana</option>
<option value="French Polynesia">French Polynesia</option>
<option value="French Southern Territories">French Southern Territories</option>
<option value="Gabon">Gabon</option>
<option value="Gambia">Gambia</option>
<option value="Georgia">Georgia</option>
<option value="Germany">Germany</option>
<option value="Ghana">Ghana</option>
<option value="Gibraltar">Gibraltar</option>
<option value="Greece">Greece</option>
<option value="Greenland">Greenland</option>
<option value="Grenada">Grenada</option>
<option value="Guadeloupe">Guadeloupe</option>
<option value="Guam">Guam</option>
<option value="Guatemala">Guatemala</option>
<option value="Guinea">Guinea</option>
<option value="Guinea-Bissau">Guinea-Bissau</option>
<option value="Guyana">Guyana</option>
<option value="Haiti">Haiti</option>
<option value="Heard Island and McDonald Islands">Heard Island and McDonald Islands</option>
<option value="Holy See (Vatican City State)">Holy See (Vatican City State)</option>
<option value="Honduras">Honduras</option>
<option value="Hong Kong">Hong Kong</option>
<option value="Hungary">Hungary</option>
<option value="Iceland">Iceland</option>
<option value="India">India</option>
<option value="Indonesia">Indonesia</option>
<option value="Iran, Islamic Republic of">Iran, Islamic Republic of</option>
<option value="Iraq">Iraq</option>
<option value="Ireland">Ireland</option>
<option value="Israel">Israel</option>
<option value="Italy">Italy</option>
<option value="Jamaica">Jamaica</option>
<option value="Japan">Japan</option>
<option value="Jordan">Jordan</option>
<option value="Kazakhstan">Kazakhstan</option>
<option value="Kenya">Kenya</option>
<option value="Kiribati">Kiribati</option>
<option value="Korea, Democratic People's Republic of">Korea, Democratic People's Republic of</option>
<option value="Korea, Republic of">Korea, Republic of</option>
<option value="Kuwait">Kuwait</option>
<option value="Kyrgyzstan">Kyrgyzstan</option>
<option value="Lao People's Democratic Republic">Lao People's Democratic Republic</option>
<option value="Latvia">Latvia</option>
<option value="Lebanon">Lebanon</option>
<option value="Lesotho">Lesotho</option>
<option value="Liberia">Liberia</option>
<option value="Libyan Arab Jamahiriya">Libyan Arab Jamahiriya</option>
<option value="Liechtenstein">Liechtenstein</option>
<option value="Lithuania">Lithuania</option>
<option value="Luxembourg">Luxembourg</option>
<option value="Macau">Macau</option>
<option value="Macedonia">Macedonia</option>
<option value="Madagascar">Madagascar</option>
<option value="Malawi">Malawi</option>
<option value="Malaysia">Malaysia</option>
<option value="Maldives">Maldives</option>
<option value="Mali">Mali</option>
<option value="Malta">Malta</option>
<option value="Marshall Islands">Marshall Islands</option>
<option value="Martinique">Martinique</option>
<option value="Mauritania">Mauritania</option>
<option value="Mauritius">Mauritius</option>
<option value="Mayotte">Mayotte</option>
<option value="Mexico">Mexico</option>
<option value="Micronesia, Federated States of">Micronesia, Federated States of</option>
<option value="Moldova, Republic of">Moldova, Republic of</option>
<option value="Monaco">Monaco</option>
<option value="Mongolia">Mongolia</option>
<option value="Montserrat">Montserrat</option>
<option value="Morocco">Morocco</option>
<option value="Mozambique">Mozambique</option>
<option value="Myanmar">Myanmar</option>
<option value="Namibia">Namibia</option>
<option value="Nauru">Nauru</option>
<option value="Nepal">Nepal</option>
<option value="Netherlands">Netherlands</option>
<option value="Netherlands Antilles">Netherlands Antilles</option>
<option value="New Caledonia">New Caledonia</option>
<option value="New Zealand">New Zealand</option>
<option value="Nicaragua">Nicaragua</option>
<option value="Niger">Niger</option>
<option value="Nigeria">Nigeria</option>
<option value="Niue">Niue</option>
<option value="Norfolk Island">Norfolk Island</option>
<option value="Northern Mariana Islands">Northern Mariana Islands</option>
<option value="Norway">Norway</option>
<option value="Oman">Oman</option>
<option value="Pakistan">Pakistan</option>
<option value="Palau">Palau</option>
<option value="Palestinian Territory, Occupied">Palestinian Territory, Occupied</option>
<option value="Panama">Panama</option>
<option value="Papua New Guinea">Papua New Guinea</option>
<option value="Paraguay">Paraguay</option>
<option value="Peru">Peru</option>
<option value="Philippines">Philippines</option>
<option value="Pitcairn">Pitcairn</option>
<option value="Poland">Poland</option>
<option value="Portugal">Portugal</option>
<option value="Puerto Rico">Puerto Rico</option>
<option value="Qatar">Qatar</option>
<option value="Réunion">Réunion</option>
<option value="Romania">Romania</option>
<option value="Russian Federation">Russian Federation</option>
<option value="Rwanda">Rwanda</option>
<option value="Saint Helena">Saint Helena</option>
<option value="Saint Kitts and Nevis">Saint Kitts and Nevis</option>
<option value="Saint Lucia">Saint Lucia</option>
<option value="Saint Pierre and Miquelon">Saint Pierre and Miquelon</option>
<option value="Saint Vincent and the Grenadines">Saint Vincent and the Grenadines</option>
<option value="Samoa">Samoa</option>
<option value="San Marino">San Marino</option>
<option value="Sao Tome and Principe">Sao Tome and Principe</option>
<option value="Saudi Arabia">Saudi Arabia</option>
<option value="Senegal">Senegal</option>
<option value="Serbia and Montenegro">Serbia and Montenegro</option>
<option value="Seychelles">Seychelles</option>
<option value="Sierra Leone">Sierra Leone</option>
<option value="Singapore">Singapore</option>
<option value="Slovakia">Slovakia</option>
<option value="Slovenia">Slovenia</option>
<option value="Solomon Islands">Solomon Islands</option>
<option value="Somalia">Somalia</option>
<option value="South Africa">South Africa</option>
<option value="Spain">Spain</option>
<option value="Sri Lanka">Sri Lanka</option>
<option value="Sudan">Sudan</option>
<option value="Suriname">Suriname</option>
<option value="Svalbard and Jan Mayen">Svalbard and Jan Mayen</option>
<option value="Swaziland">Swaziland</option>
<option value="Sweden">Sweden</option>
<option value="Switzerland">Switzerland</option>
<option value="Syrian Arab Republic">Syrian Arab Republic</option>
<option value="Taiwan, Province of China">Taiwan, Province of China</option>
<option value="Tajikistan">Tajikistan</option>
<option value="Tanzania, United Republic of">Tanzania, United Republic of</option>
<option value="Thailand">Thailand</option>
<option value="Timor-Leste">Timor-Leste</option>
<option value="Togo">Togo</option>
<option value="Tokelau">Tokelau</option>
<option value="Tonga">Tonga</option>
<option value="Trinidad and Tobago">Trinidad and Tobago</option>
<option value="Tunisia">Tunisia</option>
<option value="Turkey">Turkey</option>
<option value="Turkmenistan">Turkmenistan</option>
<option value="Turks and Caicos Islands">Turks and Caicos Islands</option>
<option value="Tuvalu">Tuvalu</option>
<option value="Uganda">Uganda</option>
<option value="Ukraine">Ukraine</option>
<option value="United Arab Emirates">United Arab Emirates</option>
<option value="United Kingdom">United Kingdom</option>
<option value="United States">United States</option>
<option value="United States Minor Outlying Islands">United States Minor Outlying Islands</option>
<option value="Uruguay">Uruguay</option>
<option value="Uzbekistan">Uzbekistan</option>
<option value="Vanuatu">Vanuatu</option>
<option value="Venezuela">Venezuela</option>
<option value="Viet Nam">Viet Nam</option>
<option value="Virgin Islands, British">Virgin Islands, British</option>
<option value="Virgin Islands, U.S.">Virgin Islands, U.S.</option>
<option value="Wallis and Futuna">Wallis and Futuna</option>
<option value="Western Sahara">Western Sahara</option>
<option value="Yemen">Yemen</option>
<option value="Zambia">Zambia</option>
<option value="Zimbabwe">Zimbabwe</option>
</SELECT>
<br />
<br />
Username Colour:<br />
<select name="usercolour">
<OPTION value="#000000">Black</OPTION>
<OPTION value="#FF0000">Red</OPTION>
<OPTION value="#00FF00">Green</OPTION>
<OPTION value="#0000FF">Blue</OPTION>
<OPTION value="#FFFF00">Yellow</OPTION>
<OPTION value="#FF00FF">Pink</OPTION>
<OPTION value="#C0C0C0">Grey</OPTION>
<OPTION value="#FF6600">Orange</OPTION>
<OPTION value="#990066">Purple</OPTION>
<OPTION value="#4682B4">Steelblue</OPTION>
<OPTION value="#DDA0DD">Plum</OPTION>
<OPTION value="#AFEEEE">Paleturquoise</OPTION>
<OPTION value="#D87093">Palevioletred</OPTION>
<OPTION value="#191970">Midnightblue</OPTION>
<OPTION value="#8A2BE2">Blue Violet</OPTION>
<OPTION value="#7FFF00">Chartreuse</OPTION>
<OPTION value="#DC143C">Crimson</OPTION>
<OPTION value="#008B8B">Dark Cyan</OPTION>
<OPTION value="#8B0000">Dark Red</OPTION>
<OPTION value="#FF1493">Deep Pink</OPTION>
</select>
<br />
<br />
Gender:<br />
<SELECT name="sexmalefemale">
<OPTION value="Boy">Boy</OPTION>
<OPTION value="Girl">Girl</OPTION>
</SELECT>
<br />
<br />
About Yourself:<br />
<textarea name="abouturself" cols=30 rows=5 wrap=physical></textarea>
<br />
<br />
<input type="hidden" name="random" value="<? echo("$rand");?>" />
Special word<br />
<input type="text" name="word" />
<input type="hidden" name="dateofjoin" value="<? print(Date("F d, Y")); ?>" />
<input type="hidden" name="msg" value="Welcome" />
<br />
<br />
Enter the number shown below<br />
<strong><? echo("$rand");?></strong><br />
<input type="text" name="rand" />
<input type="hidden" name="lastedited" value="Registered an account @ <?php
/**
* Just add this in your page where you
* want the date/time to appear
*
* For more configuration options look
* in the PHP manual at http://uk2.php.net/date
*/
// Displays in the format Saturday, November 22, 2003 11.38
echo date("l, F d, Y h:i" ,time());
?> " />
<br />
<br />
<input type="submit" value="Register" />
</div>
</form>
<?
}
if($act==register)
{
$username = clean($_POST[username]);
$msg = clean($_POST[msg]);
$subject = "Welcome";
$sendto = $username;
$sentfrom = "admin";
$user = "$username";
$reason = "joining the site";
$badge = "member.png";
$display = "1";
$privmsg = $msg;
$password2 = clean($_POST[password]);
$password = md5($_POST[password]);
$email = clean($_POST[email]);
$countrywhere = clean($_POST[countrywhere]);
$avator = clean($_POST[avator]);
$sexmalefemale = clean($_POST[sexmalefemale]);
$usercolour = clean($_POST[usercolour]);
$abouturself = clean($_POST[abouturself]);
$rand = clean($_POST[rand]);
$lastedited = clean($_POST[lastedited]);
$random = $_POST[random];
$word = clean($_POST[word]);
$dateofjoin = clean($_POST[dateofjoin]);
$check = mysql_query("select * from usr_users where username = '$username'");
$check2 = mysql_num_rows($check);
if($check2==0)
{
if($username!="" && $password!="")
{
if($rand==$random)
{
$qry = mysql_query("insert into usr_pm(subject, sendto, sentfrom, privmsg) values('$subject', '$sendto', '$sentfrom', '$privmsg')");
$result = @mysql_query($qry);
$gry2 = mysql_query("insert into usr_users(username, password, word, dateofjoin, email, countrywhere, avator, sexmalefemale, usercolour, abouturself, lastedited) values('$username', '$password', '$word', '$dateofjoin', '$email', '$countrywhere', '$avator', '$sexmalefemale', '$usercolour', '$abouturself', '$lastedited')");
$result = @mysql_query($qry2);
$qry3 = mysql_query("insert into usr_badge(user, reason, badge, display) values('$user', '$reason', '$badge', '$display')");
$result = @mysql_query($qry3);
echo("You are now signed up to our site!");
if($content[emailvert]==1)
{
$emailbody = "Thanks for registering at the $content[site] usersystem! \n \n We'd like to take this chance to confirm all of your details, just so you know how to log in and get the most out of your experience! \n \n --- \n username: $username \n Password: $password2 \n Your secret code: $sec \n Your secret word: $word \n \n -- \n \n Thanks, \n $content[site] Management --";
$mail = mail($email,"Welcome to the $content[site] usersystem!", $emailbody, "From: <$content[email]>");
if(!$mail)
echo("<br />Could not send the email at this time, please check you filled out the previous page completely and try again..");
else echo("<br /></br></br><b>Please go to the email you provided to us and confirm your account, after 1 week we will suspend your account if you do not confirm.</b>");
}
}
else echo("The number you entered did not match that displayed!");
}
else echo("You have not entered filled out all the required fields, you need to do so in order to continue..");
}
else
echo("username is already in use!");
}
?>
<? }
else echo("Register disabled"); ?>
clean.php （意味着去除空格）
<?php
function clean($str)
{
$cleaned = strip_tags(htmlspecialchars(addslashes(stripslashes( $str ))));
return $cleaned;
}
?>
功能
/*
Clean Variables
*/
function clean($str)
{
$cleaned = strip_tags(htmlspecialchars(addslashes(stripslashes( $str ))));
return $cleaned;
}
/*
End Function
*/
谢谢！