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我在表单中有一个错误，我不知道如何解决它。点击按钮修改记录后，我会收到通知行353和354未定义变量。我还看到，所有的输入框具有：Mysql PHP编辑表单错误
通知：未定义变量：行中C：\ XAMPP \ htdocs中\上线组\ modify.php
不肯定如何解决任何帮助表示赞赏。代码如下表格：
<?php
//require "admin_login.php";
//include "admin_connect.php"
$conn = mysqli_connect("localhost", "admin",
"admin9090", "linkyoutube");
mysql_select_db("linkyoutube");
if (mysqli_connect_errno()){
echo 'Cannot connect to database: ' .
mysqli_connect_error($conn);
}
if (!isset($_POST['submit'])) {
$query = "select * from submited left join person on person.person_id=submited.person_id where person.person_id= $_GET[id];";
$result = mysqli_query($conn,$query);
$row = mysqli_fetch_array($result) ;
}
?>
<!doctype html>
<head>
<meta charset="utf-8">
<title>LAB 1 6203</title>
<meta name="description" content="6203 Lab 1 ">
<link rel="stylesheet" href="css/style.css?v=1">
</head>
<body>
<h1>Submit a link</h1>
<?php include "menu2.php";?><br>
<h1>Modifying Record</h1>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" id="Form1" method="post" onSubmit="return validateForm();">
<p>First Name: <input type="text" name="fname" value="<?php echo $row['firstname']; ?>" size="60"></p>
<p>Last Name: <input type="text" name="lname" value="<?php echo $row['lastname']; ?>" size="60"></p>
<p>Email: <input type="text" name="email" value="<?php echo $row['email']; ?>" size="60"></p>
<p>Telephone: <input id="phone" name="phone" type="text" placeholder="Eg. +447000 000000" value="<?php echo $row['telephone']; ?>" required></p>
<p>Address: <input type="text" textarea name="address" type="text" value="<?php echo $row['address']; ?>" cols="30" rows="10"></textarea></p>
<p>Select a State <select id="state" type="text" name="state" >
<option value="<?php echo $row['state']; ?>" ><?php echo $row['state']; ?></option>
<option value="">Select State</option>
<option value="AL">Alabama</option>
<option value="AK">Alaska</option>
<option value="AZ">Arizona</option>
<option value="AR">Arkansas</option>
<option value="CA">California</option>
<option value="CO">Colorado</option>
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>
<option value="DC">District Of Columbia</option>
<option value="FL">Florida</option>
<option value="GA">Georgia</option>
<option value="HI">Hawaii</option>
<option value="ID">Idaho</option>
<option value="IL">Illinois</option>
<option value="IN">Indiana</option>
<option value="IA">Iowa</option>
<option value="KS">Kansas</option>
<option value="KY">Kentucky</option>
<option value="LA">Louisiana</option>
<option value="ME">Maine</option>
<option value="MD">Maryland</option>
<option value="MA">Massachusetts</option>
<option value="MI">Michigan</option>
<option value="MN">Minnesota</option>
<option value="MS">Mississippi</option>
<option value="MO">Missouri</option>
<option value="MT">Montana</option>
<option value="NE">Nebraska</option>
<option value="NV">Nevada</option>
<option value="NH">New Hampshire</option>
<option value="NJ">New Jersey</option>
<option value="NM">New Mexico</option>
<option value="NY">New York</option>
<option value="NC">North Carolina</option>
<option value="ND">North Dakota</option>
<option value="OH">Ohio</option>
<option value="OK">Oklahoma</option>
<option value="OR">Oregon</option>
<option value="PA">Pennsylvania</option>
<option value="RI">Rhode Island</option>
<option value="SC">South Carolina</option>
<option value="SD">South Dakota</option>
<option value="TN">Tennessee</option>
<option value="TX">Texas</option>
<option value="UT">Utah</option>
<option value="VT">Vermont</option>
<option value="VA">Virginia</option>
<option value="WA">Washington</option>
<option value="WV">West Virginia</option>
<option value="WI">Wisconsin</option>
<option value="WY">Wyoming</option>
<option value="AS">American Samoa</option>
<option value="GU">Guam</option>
<option value="MP">Northern Mariana Islands</option>
<option value="PR">Puerto Rico</option>
<option value="UM">United States Minor Outlying Islands</option>
<option value="VI">Virgin Islands</option>
</select></p>
<p>Select a Country <select id="country" name="country" ">
<option value="<?php echo $row['country']; ?>"><?php echo $row['country']; ?></option>
<option value="Afganistan">Afghanistan</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="Antigua & Barbuda">Antigua & 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="Bonaire">Bonaire</option>
<option value="Bosnia & Herzegovina">Bosnia & Herzegovina</option>
<option value="Botswana">Botswana</option>
<option value="Brazil">Brazil</option>
<option value="British Indian Ocean Ter">British Indian Ocean Ter</option>
<option value="Brunei">Brunei</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="Canary Islands">Canary Islands</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="Channel Islands">Channel Islands</option>
<option value="Chile">Chile</option>
<option value="China">China</option>
<option value="Christmas Island">Christmas Island</option>
<option value="Cocos Island">Cocos Island</option>
<option value="Colombia">Colombia</option>
<option value="Comoros">Comoros</option>
<option value="Congo">Congo</option>
<option value="Cook Islands">Cook Islands</option>
<option value="Costa Rica">Costa Rica</option>
<option value="Cote DIvoire">Cote D'Ivoire</option>
<option value="Croatia">Croatia</option>
<option value="Cuba">Cuba</option>
<option value="Curaco">Curacao</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="East Timor">East Timor</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">Falkland Islands</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 Ter">French Southern Ter</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="Great Britain">Great Britain</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="Guyana">Guyana</option>
<option value="Haiti">Haiti</option>
<option value="Hawaii">Hawaii</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">Iran</option>
<option value="Iraq">Iraq</option>
<option value="Ireland">Ireland</option>
<option value="Isle of Man">Isle of Man</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 North">Korea North</option>
<option value="Korea Sout">Korea South</option>
<option value="Kuwait">Kuwait</option>
<option value="Kyrgyzstan">Kyrgyzstan</option>
<option value="Laos">Laos</option>
<option value="Latvia">Latvia</option>
<option value="Lebanon">Lebanon</option>
<option value="Lesotho">Lesotho</option>
<option value="Liberia">Liberia</option>
<option value="Libya">Libya</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="Malaysia">Malaysia</option>
<option value="Malawi">Malawi</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="Midway Islands">Midway Islands</option>
<option value="Moldova">Moldova</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="Nambia">Nambia</option>
<option value="Nauru">Nauru</option>
<option value="Nepal">Nepal</option>
<option value="Netherland Antilles">Netherland Antilles</option>
<option value="Netherlands">Netherlands (Holland, Europe)</option>
<option value="Nevis">Nevis</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="Norway">Norway</option>
<option value="Oman">Oman</option>
<option value="Pakistan">Pakistan</option>
<option value="Palau Island">Palau Island</option>
<option value="Palestine">Palestine</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="Phillipines">Philippines</option>
<option value="Pitcairn Island">Pitcairn Island</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="Republic of Montenegro">Republic of Montenegro</option>
<option value="Republic of Serbia">Republic of Serbia</option>
<option value="Reunion">Reunion</option>
<option value="Romania">Romania</option>
<option value="Russia">Russia</option>
<option value="Rwanda">Rwanda</option>
<option value="St Barthelemy">St Barthelemy</option>
<option value="St Eustatius">St Eustatius</option>
<option value="St Helena">St Helena</option>
<option value="St Kitts-Nevis">St Kitts-Nevis</option>
<option value="St Lucia">St Lucia</option>
<option value="St Maarten">St Maarten</option>
<option value="St Pierre & Miquelon">St Pierre & Miquelon</option>
<option value="St Vincent & Grenadines">St Vincent & Grenadines</option>
<option value="Saipan">Saipan</option>
<option value="Samoa">Samoa</option>
<option value="Samoa American">Samoa American</option>
<option value="San Marino">San Marino</option>
<option value="Sao Tome & Principe">Sao Tome & Principe</option>
<option value="Saudi Arabia">Saudi Arabia</option>
<option value="Senegal">Senegal</option>
<option value="Serbia">Serbia</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="Swaziland">Swaziland</option>
<option value="Sweden">Sweden</option>
<option value="Switzerland">Switzerland</option>
<option value="Syria">Syria</option>
<option value="Tahiti">Tahiti</option>
<option value="Taiwan">Taiwan</option>
<option value="Tajikistan">Tajikistan</option>
<option value="Tanzania">Tanzania</option>
<option value="Thailand">Thailand</option>
<option value="Togo">Togo</option>
<option value="Tokelau">Tokelau</option>
<option value="Tonga">Tonga</option>
<option value="Trinidad & Tobago">Trinidad & Tobago</option>
<option value="Tunisia">Tunisia</option>
<option value="Turkey">Turkey</option>
<option value="Turkmenistan">Turkmenistan</option>
<option value="Turks & Caicos Is">Turks & Caicos Is</option>
<option value="Tuvalu">Tuvalu</option>
<option value="Uganda">Uganda</option>
<option value="Ukraine">Ukraine</option>
<option value="United Arab Erimates">United Arab Emirates</option>
<option value="United Kingdom">United Kingdom</option>
<option value="United States of America">United States of America</option>
<option value="Uraguay">Uruguay</option>
<option value="Uzbekistan">Uzbekistan</option>
<option value="Vanuatu">Vanuatu</option>
<option value="Vatican City State">Vatican City State</option>
<option value="Venezuela">Venezuela</option>
<option value="Vietnam">Vietnam</option>
<option value="Virgin Islands (Brit)">Virgin Islands (Brit)</option>
<option value="Virgin Islands (USA)">Virgin Islands (USA)</option>
<option value="Wake Island">Wake Island</option>
<option value="Wallis & Futana Is">Wallis & Futana Is</option>
<option value="Yemen">Yemen</option>
<option value="Zaire">Zaire</option>
<option value="Zambia">Zambia</option>
<option value="Zimbabwe">Zimbabwe</option>
</select>
<p>Gender <p><input type="radio" name="gender" value="Male" <?php if ($row['sex'] == 'Male') echo 'checked="checked"'; ?>> Male</p>
<p><input type="radio" name="gender" value="Female" <?php if ($row['sex'] == 'Female') echo 'checked="checked"'; ?>> Female</p>
<p>Link Address: <input type="text" name="link" size="60" value="<?php echo $row['link']; ?>"></p>
<p>Description of the link: <textarea name="description" cols="50" rows="20" value="<?php echo $row['description']; ?>"><?php echo $row['description']; ?></textarea></p>
<p>Link Category 1 <select id="type1" name="type1" value="" >
<option value="<?php echo $row['type1']; ?>"><?php echo $row['type1']; ?></option>
<option value="Video">Video</option>
<option value="Article">Article</option>
<option value="Newspaper">Newspaper</option>
<option value="Magazine">Magazine</option>
<option value="Social Media">Social Media</option>
<option value="Book">Book</option>
<option value="Other">Other</option>
</select></p>
<p>Link Category 2 <select id="type2" name="type2" value="">
<option value="<?php echo $row['type2']; ?>"><?php echo $row['type2']; ?></option>
<option value="Science">Science</option>
<option value="Health">Health</option>
<option value="Technology">Technology</option>
<option value="Comedy">Comedy</option>
<option value="National News">National News</option>
<option value="Home">Home</option>
<option value="Education">Education</option>
</select></p>
<input type="hidden" name="id" value="<?php echo $_GET['id']; ?>" />
<p><input type="submit" name="submit" value="Modify"> </p>
</form>
<?php
if(isset($_POST['submit'])) {
$update1 ="update person set firstname='$_POST[fname]', lastname='$_POST[lname]',email='$_POST[email]',
telephone='$_POST[phone]',address='$_POST[address]',state='$_POST[state]',
country='$_POST[country]',sex='$_POST[gender]'where person_id=$_POST[id]";
mysqli_query($conn,$update1) or die(mysql_error());
echo "User had been modified!";
//header("Location: admint.php");
}
?>
我能够解决所有的输入和下拉框的问题。单选按钮仍然给我一个“注意：未定义变量：第353行C：\ xampp \ htdocs \ group \ modify.php中的行”我尝试修改您为单选按钮提供的代码，使其通过可变但我没有成功。关于如何解决此问题的任何想法？ – user1819884