試圖插入新記錄

我的表單輸入記錄，如果我根據我所建立的正則表達式格式化表格字段，然後當不echo'ed表單驗證錯誤Echo的被插入到數據庫中的記錄成功。如果我犯了任何錯誤，它只是刪除字段，並不會迴應錯誤。我對PHP相當陌生，我正在爲一個課程項目做這個工作，作爲在線課程的一部分。我不確定我的錯誤在哪裏。任何幫助將不勝感激。試圖插入新記錄

<!DOCTYPE HTML> 
<html lang = "en"> 
    <head> 
    <link rel="stylesheet" type="text/css" href="stylesheet.css"> 
    <title>Tech Order Department.html</title> 
    <meta charset = "UTF-8" /> 

<style> 

div { 
    text-align: justify; 
    } 

.section { 
    margin-left: auto; 
    margin-right: auto; 
    width: 70%; 
    } 
</style> 

</head> 

<body> 

<h2>Tech Orders</h2> 

<br> 

    <title>Page Title</title> 

    <h2>New Project</h2> 

<p class="first"><span class="error">* required field.</span></p> 
    <form action="http://www.oldgamer60.com/Project/try.php" method="post"> 

<div class="fieldset"> 
     <fieldset> 

     Project: <input type="text" name="Project" value="<?php if(isset($Project)){ echo $Project; } ?>"> 
     <span class="error">* <?php if(isset($ProjectErr)){ echo $ProjectErr; } ?></span> 
     <br><br> 
     Client: <input type="text" name="Client" value="<?php if(isset($Client)){ echo $Client; } ?>"> 
     <span class="error">* <?php if(isset($ClientErr)){ echo $ClientErr; } ?></span> 
     <br><br> 
     LastName: <input type="text" name="LastName" value="<?php if(isset($LastName)){ echo $LastName; } ?>"> 
     <span class="error">* <?php if(isset($LastNameErr)){ echo $LastNameErr; } ?></span> 
     <br><br> 
     DateReceived: <input type="text" name="DateReceived" value="<?php if(isset($DateReceived)){ echo $DateReceived; } ?>"> 
     <span class="error">* <?php if(isset($DateReceivedErr)){ echo $DateReceivedErr; } ?></span> 
     <br><br> 
     <input type="submit" name="submit" value="Submit"> 
    </fieldset> 
    </div> 
    </form> 
<br>   

<?php 
function test_input($data){ 
    $data = trim($data); 
    $data = stripslashes($data); 
    $data = htmlspecialchars($data); 
    return $data; 
} 

$servername = "localhost"; 
$username = "xxx"; 
$password = "xxx"; 
$dbname = "oldga740_SeniorProject"; 

// create connection 
$connection = new mysqli($servername, $username, $password, $dbname); 

if(isset($_POST['submit']) && !$connection->connect_error){ 
    // to track errors 
    $error = false; 

    // now validate input fields 
    if (empty($_POST['Project']) || !isset($_POST['Project'])){ 
     $ProjectErr = "Project name is required"; 
     $error = true; 
    }elseif(!preg_match("/^[A-Za-z0-9.-]+$/",$_POST['Project'])){ 
     // check if project only contains number, letters, comma's periods and whitespace 
     $ProjectErr = "Only letters, numbers, comma's, periods and white space allowed"; 
     $error = true; 
    }else{ 
     $Project = test_input($_POST['Project']); 
    } 

    if (empty($_POST['Client']) || !isset($_POST['Client'])){ 
     $ClientErr = "Client name is required"; 
     $error = true; 
    }elseif(!preg_match("/^[A-Za-z0-9.-]+$/",$_POST['Client'])){ 
     // check if project only contains number, letters, comma's periods and whitespace 
     $ClientErr = "Only letters, numbers, comma's, periods and white space allowed"; 
     $error = true; 
    }else{ 
     $Client = test_input($_POST['Client']); 
    } 

    if (empty($_POST['LastName']) || !isset($_POST['LastName'])){ 
     $LastNameErr = "Last name is required"; 
     $error = true; 
    }elseif(!preg_match("/^[A-Za-z0-9-]+$/",$_POST['LastName'])){ 
     // check if last name only contains letters and whitespace 
     $LastNameErr = "Only letters and white space allowed"; 
     $error = true; 
    }else{ 
     $LastName = test_input($_POST['LastName']); 
    } 

    if (empty($_POST['DateReceived']) || !isset($_POST['DateReceived'])){ 
     $DateReceivedErr = "Data received field is required"; 
     $error = true; 
    }elseif(!preg_match("/^\d{4}-\d{2}-\d{2}$/",$_POST['DateReceived'])){ 
     // check if data received only contains letters and whitespace 
     $DateReceivedErr = "Date must be entered as YYYY/MM/DD"; 
     $error = true; 
    }else{ 
     $DateReceived = test_input($_POST['DateReceived']); 
    } 

    if(!$error){ 
     $query = "INSERT INTO Projects (Project, Client, LastName, DateReceived) VALUES ('$Project', '$Client', '$LastName', '$DateReceived')"; 
     if($connection->query($query)){ 
      echo "record is successfully inserted!"; 
     }else{ 
      echo "error: record could not be inserted"; 
     } 
    } 
} 
?> 
<?php 
    $connection->close(); 
?> 
</div> 
</div> 
</body> 
</html>

來源

2015-11-29 Tony

看看這個。在您的形式使用（定義之前試圖呼應他們泰伊在代碼下定義，但YOUT）尚未定義的瓦爾：

Project: <input type="text" name="Project" value="<?php if(isset($Project)){ echo $Project; } ?>"> 
    <span class="error">* <?php if(isset($ProjectErr)){ echo $ProjectErr; } ?></span> 
    <br><br>

isset($ProjectErr)是從來沒有，因爲你設置它在代碼中降低，並且 $ProjectErr不存在您的表格

解決方案，把表單放在php代碼中您檢查輸入字段。

編輯：嘗試是這樣的：

<!DOCTYPE HTML> 
<html lang = "en"> 
    <head> 
    <link rel="stylesheet" type="text/css" href="stylesheet.css"> 
    <title>Tech Order Department.html</title> 
    <meta charset = "UTF-8" /> 

<style> 

div { 
    text-align: justify; 
    } 

.section { 
    margin-left: auto; 
    margin-right: auto; 
    width: 70%; 
    } 
</style> 

</head> 

<body> 

<h2>Tech Orders</h2> 

<br> 

    <title>Page Title</title> 

    <h2>New Project</h2> 

<p class="first"><span class="error">* required field.</span></p> 



<?php 
function test_input($data){ 
    $data = trim($data); 
    $data = stripslashes($data); 
    $data = htmlspecialchars($data); 
    return $data; 
} 

$servername = "localhost"; 
$username = "xxx"; 
$password = "xxx"; 
$dbname = "oldga740_SeniorProject"; 

// create connection 
$connection = new mysqli($servername, $username, $password, $dbname); 

if(isset($_POST['submit']) && !$connection->connect_error){ 
    // to track errors 
    $error = false; 

    // now validate input fields 
    if (empty($_POST['Project']) || !isset($_POST['Project'])){ 
     $ProjectErr = "Project name is required"; 
     $error = true; 
    }elseif(!preg_match("/^[A-Za-z0-9.-]+$/",$_POST['Project'])){ 
     // check if project only contains number, letters, comma's periods and whitespace 
     $ProjectErr = "Only letters, numbers, comma's, periods and white space allowed"; 
     $error = true; 
    }else{ 
     $Project = test_input($_POST['Project']); 
    } 

    if (empty($_POST['Client']) || !isset($_POST['Client'])){ 
     $ClientErr = "Client name is required"; 
     $error = true; 
    }elseif(!preg_match("/^[A-Za-z0-9.-]+$/",$_POST['Client'])){ 
     // check if project only contains number, letters, comma's periods and whitespace 
     $ClientErr = "Only letters, numbers, comma's, periods and white space allowed"; 
     $error = true; 
    }else{ 
     $Client = test_input($_POST['Client']); 
    } 

    if (empty($_POST['LastName']) || !isset($_POST['LastName'])){ 
     $LastNameErr = "Last name is required"; 
     $error = true; 
    }elseif(!preg_match("/^[A-Za-z0-9-]+$/",$_POST['LastName'])){ 
     // check if last name only contains letters and whitespace 
     $LastNameErr = "Only letters and white space allowed"; 
     $error = true; 
    }else{ 
     $LastName = test_input($_POST['LastName']); 
    } 

    if (empty($_POST['DateReceived']) || !isset($_POST['DateReceived'])){ 
     $DateReceivedErr = "Data received field is required"; 
     $error = true; 
    }elseif(!preg_match("/^\d{4}-\d{2}-\d{2}$/",$_POST['DateReceived'])){ 
     // check if data received only contains letters and whitespace 
     $DateReceivedErr = "Date must be entered as YYYY/MM/DD"; 
     $error = true; 
    }else{ 
     $DateReceived = test_input($_POST['DateReceived']); 
    } 

    if(!$error){ 
     $query = "INSERT INTO Projects (Project, Client, LastName, DateReceived) VALUES ('$Project', '$Client', '$LastName', '$DateReceived')"; 
     if($connection->query($query)){ 
      echo "record is successfully inserted!"; 
     }else{ 
      echo "error: record could not be inserted"; 
     } 
    } 
} 
?> 
<?php 
    $connection->close(); 
?> 
<form action="http://www.oldgamer60.com/Project/try.php" method="post"> 

    <div class="fieldset"> 
      <fieldset> 

      Project: <input type="text" name="Project" value="<?php if(isset($Project)){ echo $Project; } ?>"> 
      <span class="error">* <?php if(isset($ProjectErr)){ echo $ProjectErr; } ?></span> 
      <br><br> 
      Client: <input type="text" name="Client" value="<?php if(isset($Client)){ echo $Client; } ?>"> 
      <span class="error">* <?php if(isset($ClientErr)){ echo $ClientErr; } ?></span> 
      <br><br> 
      LastName: <input type="text" name="LastName" value="<?php if(isset($LastName)){ echo $LastName; } ?>"> 
      <span class="error">* <?php if(isset($LastNameErr)){ echo $LastNameErr; } ?></span> 
      <br><br> 
      DateReceived: <input type="text" name="DateReceived" value="<?php if(isset($DateReceived)){ echo $DateReceived; } ?>"> 
      <span class="error">* <?php if(isset($DateReceivedErr)){ echo $DateReceivedErr; } ?></span> 
      <br><br> 
      <input type="submit" name="submit" value="Submit"> 
     </fieldset> 
     </div> 
     </form> 
    <br> 
</div> 
</div> 
</body> 
</html>

來源

2015-11-29 20:18:40 Standej

我搬到了PHP下的形式，但我覺得我一直是在頁面底部的密切聯繫中。我運行了你的編輯，但我現在收到兩個警告。＃1警告：mysqli :: mysqli（）[mysqli.mysqli]：（28000/1045）：在/ home/oldga740/public_html/Project/try中拒絕用戶'xxx'@'localhost'（使用密碼：YES） .php 51行＃2警告：mysqli :: close（）[mysqli.close]：無法在第113行的/home/oldga740/public_html/Project/try.php中獲取mysqli。這些是我創建的連接，關閉連接線 – Tony

如果我再次輸入登錄信息，可能會有幫助..... – Tony

感謝您的幫助。這一旦我把我的數據庫登錄信息。 – Tony

試圖插入新記錄

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