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Thread: Values not going in DB a Further Step

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  1. #1
    Join Date
    Apr 2012
    Posts
    23

    Values not going in DB a Further Step

    Okay,

    With this issue I am having trouble get the script to update or add new records. It produces no error messages:

    My DB:

    Column Type Null Default
    id int(11) No Autoincrement
    page varchar(255) Yes NULL
    title varchar(255) Yes NULL
    description varchar(255) Yes NULL
    keywords varchar(255) Yes NULL

    The code:
    view.php
    PHP Code:
    <?php
            
    // connect to the database
            
    include("connect.php");
            
    // A function that is easily reusable
            
    function renderForm($page ''$title ''$description ''$keywords ''$error ''$id '')
            { 
    ?>
                    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
                    <html>
                            <head>  
                                    <title>
                                            <?php if ($id != '') { echo "Edit Record"; } else { echo "New Record"; } ?>
                                    </title>
                                    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
                            </head>
                            <body>
                                    <h1><?php if ($id != '') { echo "Edit Record"; } else { echo "New Record"; } ?></h1>
                                    <?php if ($error != '') {
                                            echo 
    "<div style='padding:4px; border:1px solid red; color:red'>" $error
                                                    
    "</div>";
                                    } 
    ?>
                                    <form action="" method="post">
                                    <div>
                                            <?php if ($id != '') { ?>
                                                    <input type="hidden" name="id" value="<?php echo $id?>" />
                                                    <p>ID: <?php echo $id?></p>
                                            <?php ?>
                                            <strong>Page: *</strong> <input type="text" name="page"
                                                    value="<?php echo $page?>"/><br/>
                                            <strong>Title: *</strong> <input type="text" name="title"
                                                    value="<?php echo $title?>"/><br/>
                                            <strong>Description: *</strong> <input type="text" name="description"
                                                    value="<?php echo $description?>"/><br/>
                                            <strong>Keywords: *</strong> <input type="text" name="keywords"
                                                    value="<?php echo $keywords?>"/>
                                            <p>* required</p>
                                            <input type="submit" name="submit" value="Submit" />
                                    </div>
                                    </form>
                            </body>
                    </html>
            <?php }
            
    /*
               EDIT RECORD
            */
            // if the 'id' variable is set in the URL, 
            
    if (isset($_GET['id']))
            {
                    
    // if the form's submit button is clicked, we need to process the form
                    
    if (isset($_POST['submit']))
                    {
                            
    // make sure the 'id' in the URL is valid
                            
    if (is_numeric($_POST['id']))
                            {
                                    
    // get variables from the URL/form
                                    
    $id $_POST['id'];
                                    
    $page htmlentities($_POST['page'], ENT_QUOTES);
                                    
    $title htmlentities($_POST['title'], ENT_QUOTES);
                                    
    $description htmlentities($_POST['description'], ENT_QUOTES);
                                    
    $keywords htmlentities($_POST['keywords'], ENT_QUOTES);
                                    
    // check that page and title are both not empty
                                    
    if ($page == '' || $title == '')
                                    {
                                            
    // if they are empty, show an error 
                                            
    $error 'ERROR: Please fill in all required fields!';
                                            
    renderForm($page$title$description$keywords$error$id);
                                    }
                                    else
                                    {
                                            
    // if everything is fine, update 
                                            
    if ($stmt $mysqli->prepare("UPDATE URL SET page = ?, title = ?, description = ?, keywords = ?
                                                    WHERE id=?"
    ))
                                            {
                                                    
    $stmt->bind_param("ssi"$page$title$description$keywords$id);
                                                    
    $stmt->execute();
                                                    
    $stmt->close();
                                            }
                                            
    // show an error message if the query has an error
                                            
    else
                                            {
                                                    echo 
    "ERROR: could not prepare SQL statement.";
                                            }
                                            
    header("Location: view.php");
                                    }
                            }
                            
    // if the 'id' variable is not valid, show an error message
                            
    else
                            {
                                    echo 
    "Error!";
                            }
                    }
                    
    // if the form hasn't been submitted yet,
                    
    else
                    {
                            
    // make sure the 'id' value is valid
                            
    if (is_numeric($_GET['id']) && $_GET['id'] > 0)
                            {
                                    
    // get 'id' from URL
                                    
    $id $_GET['id'];
                                    
                                    
    // get the record from the database
                                    
    if($stmt $mysqli->prepare("SELECT * FROM URL WHERE id=?"))
                                    {
                                            
    $stmt->bind_param("i"$id);
                                            
    $stmt->execute();
                                            
                                            
    $stmt->bind_result($id$page$title$description$keywords);
                                            
    $stmt->fetch();
                                            
                                            
    // show the form
                                            
    renderForm($page$title$description$keywordsNULL$id);
                                            
                                            
    $stmt->close();
                                    }
                                    
    // show an error if the query has an error
                                    
    else
                                    {
                                            echo 
    "Error: could not prepare SQL statement";
                                    }
                            }
                            
    // if the 'id' value is not valid, redirect the user back to the view.php page
                            
    else
                            {
                                    
    header("Location: view.php");
                            }
                    }
            }
                    
    /*
               NEW RECORD
            */
            // if the 'id' variable is not set in the URL,
            
    else
            {
                    
    // if the form's submit button is clicked, we need to process the form
                    
    if (isset($_POST['submit']))
                    {
                            
    // get the form data
                            
    $page htmlentities($_POST['page'], ENT_QUOTES);
                            
    $title htmlentities($_POST['title'], ENT_QUOTES);
                            
    $description htmlentities($_POST['description'], ENT_QUOTES);
                            
    $keywords htmlentities($_POST['keywords'], ENT_QUOTES);
                            
                            
    // check that page and title are both not empty
                            
    if ($page == '' || $title == '')
                            {
                                    
    // if they are empty, show an error message 
                                    
    $error 'ERROR: Please fill in all required fields!';
                                    
    renderForm($page$title,$description$keywords$error);
                            }
                            else
                            {
                                    
    // insert the new record into the database
                                    
    if ($stmt $mysqli->prepare("INSERT URL (page, title, description, keywords) VALUES (?, ?)"))
                                    {
                                            
    $stmt->bind_param("ss"$page$title$description$keywords);
                                            
    $stmt->execute();
                                            
    $stmt->close();
                                    }
                                    
    // show an error if the query has an error
                                    
    else
                                    {
                                            echo 
    "ERROR: Could not prepare SQL statement.";
                                    }
                                    
                                    
    // redirect the user
                                    
    header("Location: view.php");
                            }    
                    }
                    else
                    {
                            
    renderForm();
                    }
            }
            
    // close the mysqli connection
            
    $mysqli->close();
    ?>
    Last edited by chrisguk; 04-23-2012 at 02:24 PM.

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