Question

我有两个php文件，表单和结果页面。表单页面接受用户信息，结果页面将信息插入数据库并显示它。

表单页码：

    <html>

   <head>

     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Record Insertion Form</title>
    <link rel="stylesheet" type="text/css" href="style.css" />
    </head>
    <body>
    <?php

        echo "<div style='font-size: large; font-family: sans-serif'><center><h1>
              <p style='color: white; background-color: black'>Resume Generator</p></h1></center>      </div>";

echo "Mandotary fields with <font color='red'>*</font> are required!";
?>

<form id="form1" name="form1" method="post" action="resumeinsert.php">
<fieldset>
<legend>Personal Details</legend>
<input type="hidden" name="id" id="id" />
<br class="clear" /> 
<label for="name"><font color="red">*</font> Name:</label><input type="text" name="name" id="name" />
<br class="clear" /> 
<label for="gender"><font color="red">*</font> Gender:</label>
<input type="radio" name="gender" value="Male" id="gender_0" />Male
<input type="radio" name="gender" value="Female" id="gender_1" />Female
<br class="clear" /> 
<label for="dateofbirth"><font color="red">*</font> Date of birth:</label><input type="text" name="dateofbirth" id="dateofbirth" />
<br class="clear" /> 
<label for="placeofbirth"><font color="red">*</font> Place of birth :</label><input type="text" name="placeofbirth" id="placeofbirth" />
<br class="clear" /> 
<label for="address"><font color="red">*</font> Address:</label><textarea name="address" id="address" cols="45" rows="5"></textarea>
<br class="clear" /> 
</fieldset>
<fieldset>
<legend><b>Educational Details</b></legend>
<label for="schoolname"><font color="red">*</font> School name:</label><input type="text" name="schoolname" id="schoolname" size=50 />
<br class="clear" /> 
<label for="qualification"><font color="red">*</font> Qualification(s):</label><textarea name="qualification" id="qualification" cols="45" rows="5"></textarea>
<br class="clear" /> 
<label for="skills1"><font color="red">*</font> Skills 1:</label><textarea name="skills1" id="skills1" cols="45" rows="5"></textarea>
<br class="clear" /> 
<label for="skills2">Skills 2:</label><textarea name="skills2" id="skills2" cols="45" rows="5"></textarea>
<br class="clear" /> 
</fieldset>
<fieldset><legend><b>Other Details</b></legend>
<label for="awards">Awards:</label><textarea name="awards" id="awards" cols="45" rows="5"></textarea>
<br class="clear" /> 
<label for="Volunteer">Volunteer:</label><textarea name="Volunteer" id="Volunteer" cols="45" rows="5"></textarea>
<br class="clear" /> 
<input type="submit" name="submit" id="submit" value="Submit" />
<br class="clear" /> 
</fieldset>
</form>

</body>
</html>

resumeinsert.php页面代码：

<?php
$mysqli = mysqli_connect("localhost", "hecton", "ccna", "joomladb");

if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
} else {

$id = $_POST['id'];  
$name = $_POST['name'];  
$gender = $_POST['gender'];  
$dateofbirth = $_POST['dateofbirth'];  
$placeofbirth = $_POST['placeofbirth'];  
$address = $_POST['address'];  
$schoolname = $_POST['schoolname'];  
$qualification = $_POST['qualification'];  
$skills1 = $_POST['skills1'];  
$skills2 = $_POST['skills2'];  
$awards = $_POST['awards'];  
$Volunteer = $_POST['Volunteer'];

     $query = " INSERT INTO j71mi_resumeinfo ( id, name, gender, dateofbirth, placeofbirth, address, schoolname, qualification, skills1, skills2, awards, Volunteer )  VALUES ( '$id', '$name', '$gender', '$dateofbirth', '$placeofbirth', '$address', '$schoolname', '$qualification', '$skills1', '$skills2', '$awards', '$Volunteer' ) "; 
 $result = mysqli_query($mysqli, $query); 


    if ($result === TRUE) {
        echo "A record has been successfully inserted into the database!."; 
        echo "<b><h1><center>My Resume</h1></b></center>";

        echo "<div style='font-size: large; font-family: sans-serif'>
              <p style='color: white; background-color: black'>Personal Details</p></div>";
              echo "<br>";


        echo "<b>Name:</b>".$_POST['name']; 
                echo "<br>";
        echo "<b>Gender:</b>".$_POST['gender'];
                echo "<br>";
        echo "<b>Date of Birth:</b>".$_POST['dateofbirth'];
                echo "<br>";
        echo "<b>Place of Birth:</b>".$_POST['placeofbirth'];
                echo "<br>";
        echo "<b>Home Address:</b>".$_POST['address'];
        echo "<div style='font-size: large; font-family: sans-serif'>
              <p style='color: white; background-color: black'>Educational Details</p></div>";
              echo "<br>";
        echo "<b>School Name:</b>".$_POST['schoolname'];
                echo "<br>";
        echo "<b>Qualification(s):</b>".$_POST['qualification'];
                echo "<br>";
        echo "<b>Skill 1:</b>".$_POST['skills1'];
                echo "<br>";
        echo "<b>Skill 2:</b>".$_POST['skills2'];
                echo "<br>";
                echo "<div style='font-size: large; font-family: sans-serif'>
              <p style='color: white; background-color: black'>Other Details</p></div>";
              echo "<br>";
              echo "<b>Award(s):</b>".$_POST['awards'];
                echo "<br>";
        echo "<b>Volunteer Activity:</b>".$_POST['Volunteer'];
        echo "<br>";
        echo "<br>";
        echo "<b><h5><center>End of Resume</h5></b></center>";



    } else {
        printf("Could not insert record: %s\n", mysqli_error($mysqli));
    }

    mysqli_close($mysqli);
}
?>

我的问题是用户有时提交表单甚至没有填写所有字段，它显示＆＃34;名称：＆＃34;，其中不包含任何内容。

如何在用户点击提交按钮并在缺少的字段旁边显示红色文字后，如何让用户填写缺少的必填字段？这样就不会将空字段发送到数据库。

2.数据库中的某些字段设置为NULL，这意味着该字段是可选的。如果用户在表单中没有输入任何内容，我怎么能不在显示页面中显示该特定字段？

Answer 1

您必须验证表单。使用简单检查来确定字段是否正确填充。检查空的，字母数字，以及您需要的其他内容。在将数据发送到服务器之前，最好检查前端。以下是一些可以帮助您入门的示例：

JS表单验证 http://www.w3schools.com/js/js_form_validation.asp

JS表单验证 http://www.tizag.com/javascriptT/javascriptform.php

PHP表单验证 http://www.w3schools.com/php/php_form_validation.asp

查看这些示例并实现与此类似的内容。即使您最终在JS中验证表单，也不要忘记在PHP中实现最低限度的检查。

PHP表单中的必填字段

1 个答案: