在MySQL数据库中插入数据

Question

I have created a drop down list as well a input type for for category and name but in both the case as i click next it directs me to another page but nothing saves in my database. company_account is the table name in which data has to be inserted it has four rows id, category, cname, about

<?php include( "./inc/header.inc.php");
 require( "./inc/connect.inc.php"); ?>

<div>
<form action = "payment.php" method= "POST">
<select id="category" name="category" class="old_ui_selector">
    <option value="0" selected="1">Choose your category</option>
    <option value="">Accounting Firm</option>
    <option value="">Agriculture</option>
    <option value="">Automotive</option>
    <option value="">Aerospace/Defence</option>
    <option value="">Building Material</option>

</select>
</div>
<br>
<input type = "text" name="cname" placeholder= "Name"/>
<br><br>
By clicking Next you agree to the <a href="terms.php" style="color: #008781">Terms and Conditions.</a>
<br>
<input type = "submit" name="comp" value="Next"/>
</form>

<?php
if(isset($_POST['comp']))
{
    $category=$_GET['category'];
    $cname = $_POST['cname'];
    $ins=mysql_query("insert into company_account (category) values ('$category')");
    $insert = mysql_query("INSERT INTO company_account VALUES ('','$category','$cname','$about')");
    if($ins)
        if($insert)
    {
        echo "<br>".$category."inserted";
    }
    else
    {
        echo mysql_error();
    }
}
?>

Answer 1

You have a few issues there, the first is you are using mysql, either update it to mysqli or better still PDO.

Second your form is submitting using POST and yet you try to collect the category using GET.

You also need to supply the contents of your connect.inc.php WITHOUT THE IP AND PASSWORD so people can have a look at the config.

I would suggest before going any further you have read here and get a better understanding before you proceed.

https://code.tutsplus.com/tutorials/why-you-should-be-using-phps-pdo-for-database-access--net-12059

Best of luck.

Answer 2

Note: mysql : This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used.

You have provided with the form action and that will redirect after clicking the submit button.

You have written the INSERT STATEMENT in the same page itself and that will not even work for you.

First Remove up the action="" and then you redirect it based on the data saved.

HTML:

<form action = "" method= "POST">
</form>

And you Option value is missing out values and after the form is submitted the values will not be entered into the DB. Hence you need to do the following.

Replace:

<option value="">Accounting Firm</option>

With:

<option value="Accounting Firm">Accounting Firm</option>

PHP Code for Insert:

You Insert Code will not work since you have not provided with the table values for insert operations.

Syntax:

INSERT INTO TABLENAME(`columnname1`,`columnname2`,.....) VALUES(VALUE1,VALUE1,....)

Hence you are advised to use the correct table structure for the Operations and then insert the data.

INSERT QUERY:

$insert = mysql_query("INSERT INTO company_account(`category`,`name`,`about`) VALUES ('$category','$cname','$about')");

You can insert all in the single query itself and then redirect using the header location.

Use header Location for redirection to particular page after the data has been saved.

header('location : http://www.google.co.in');

PHP PART:

<?php
if(isset($_POST['comp']))
{
    $category=$_POST['category'];
    $cname = $_POST['cname'];
    $insert = mysql_query("INSERT INTO company_account(`category`,`name`,`about`) VALUES ('$category','$cname','$about')");
    $rows = mysql_affected_rows();
    if($rows=0)
    {
        echo mysql_error();
    }
    else
    {
        ob_start(); // Refresh the Output Buffer
        header('location: http://www.google.co.in');
        exit;
    }
}
?>

Note: $about you are using in the Insert Statement but no values are provided over to the Insert Statement. Please check to that.