试图插入新记录

我的表单输入记录，如果我根据我所建立的正则表达式格式化表格字段，然后当不echo'ed表单验证错误Echo的被插入到数据库中的记录成功。如果我犯了任何错误，它只是删除字段，并不会回应错误。我对PHP相当陌生，我正在为一个课程项目做这个工作，作为在线课程的一部分。我不确定我的错误在哪里。任何帮助将不胜感激。试图插入新记录

<!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>

来源

2015-11-29 Tony

看看这个。在您的形式使用（定义之前试图呼应他们泰伊在代码下定义，但YOUT）尚未定义的瓦尔：

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)是从来没有，因为你设置它在代码中降低，并且 $ProjectErr不存在您的表格

解决方案，把表单放在php代码中您检查输入字段。

编辑：尝试是这样的：

<!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>

来源

2015-11-29 20:18:40 Standej

我搬到了PHP下的形式，但我觉得我一直是在页面底部的密切联系中。我运行了你的编辑，但我现在收到两个警告。＃1警告：mysqli :: mysqli（）[mysqli.mysqli]：（28000/1045）：在/ home/oldga740/public_html/Project/try中拒绝用户'xxx'@'localhost'（使用密码：YES） .php 51行＃2警告：mysqli :: close（）[mysqli.close]：无法在第113行的/home/oldga740/public_html/Project/try.php中获取mysqli。这些是我创建的连接，关闭连接线 – Tony

如果我再次输入登录信息，可能会有帮助..... – Tony

感谢您的帮助。这一旦我把我的数据库登录信息。 – Tony

试图插入新记录

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