[請益] 變數未定義問題?

看板PHP作者joinbee (farewell 我的童年)時間3年前 (2021/11/09 14:11)推噓1(1推 0噓 5→)

留言6則, 5人參與討論串1/1

<?php require("connect.php"); $guestName=$_POST["guestName"]; $guestEmail=$_POST["guestEmail"]; $guestGender=$_POST["guestGender"]; $guestSubject=$_POST["guestSubject"]; $guestContent=$_POST["guestContent"]; $guestTime = date("Y:m:d H:i:s",time()+28800); if(isset($guestName)){ mysqli_query($link,"insert into guest value('','$guestName','$guestEmail','$guestGender','$guestSubject','$guestTime','$guestContent','','')"); header("location:p13-show.php"); } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "" rel="nofollow">https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="" rel="nofollow">https://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>我要留言</title> <link rel="stylesheet" href="" rel="nofollow">https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css"> </head> <style> .container{ margin:auto; background-color:#f5f5f5; width:800px; padding-bottom: 20px; } .button{ text-align:center; padding:20px 0; } .top h3{ font-family:微軟正黑體; text-align:center; padding:10px 0; } .form-group{ font-family:微軟正黑體; font-size:16px; } </style> <body> <div class="container"> <div class="top"> <h3>新增留言</h3> </div> <form id="form1" name="form1" method="post" action="" class="form-horizontal"> <div class="form-group"> <label for="guestName" class="col-sm-4 control-label">暱稱： </label> <div class="col-sm-6"> <input type="text" class="form-control" placeholder="您的暱稱 " name="guestName" id="guestName" /> </div> </div> <div class="form-group"> <label for="guestEmail" class="col-sm-4 control-label">信箱： </label> <div class="col-sm-6"> <input type="text" class="form-control" placeholder="您的信箱 " name="guestEmail" id="guestEmail" /> </div> </div> <div class="form-group"> <label for="guestGender" class="col-sm-4 control-label">性別： </label> <label class="radio-inline"> <input type="radio" name="guestGender" id="radio" value="男" /> 男 </label> <label class="radio-inline"> <input type="radio" name="guestGender" id="radio2" value="女" />女 </label> </div> <div class="form-group"> <label for="guestSubject" class="col-sm-4 control-label">留言主旨：</label> <div class="col-sm-6"> <input type="text" class="form-control" name="guestSubject" id="guestSubject" /> </div> </div> <div class="form-group"> <label for="guestContent" class="col-sm-4 control-label">留言內容： </label> <div class="col-sm-6"> <textarea name="guestContent" class="form-control" id="guestContent" rows="5"></textarea> </div> </div> <div class="button"> <input type="submit" name="button" id="button" value="送出" class="btn"/> </div> </form> </div> </body> </html> 請問各位高手，不好意思我不懂怎麼貼到網路上，所以只好貼在板上，排版很醜請見諒我在寫一個留言板，但連上留言版都會顯示Warning: Undefined array key "guestName" in C:\xampp\htdocs\hello.php on line 4 Warning: Undefined array key "guestEmail" in C:\xampp\htdocs\hello.php on line 5 Warning: Undefined array key "guestGender" in C:\xampp\htdocs\hello.php on line 6 Warning: Undefined array key "guestSubject" in C:\xampp\htdocs\hello.php on line 7 Warning: Undefined array key "guestContent" in C:\xampp\htdocs\hello.php on line 8 請問一下，php的變數不是不用宣告嗎?還是問題是出在Html身上，請指教一下 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 218.164.209.141 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/PHP/M.1636438285.A.74E.html