Notice: Undefined index: id_client in C:\xampp\htdocs\pw\web\adauga_cos on line 38 Notice: Undefined index: id_client in C:\xampp\htdocs\pw\web\adauga_cos on line 20 I have started in all the pages the session_start(). Hi guys, I am trying to add products to my car, but I can’t get the id_client from the db,neither the product_id □ I don’t know what to do. Towards the bottom of the page where you want to display comments.Īfter performing the steps above, our page1.php file now looks like this: Īfter testing our two pages, you can see that each page shows only the comments that were added to that particular page: Update both page1.php and page2.php to include display_comments.php by using:.Create a file named display_comments.php.In a previous article, we explained how to use php’s include function to reuse code, and we will continue to use this method to use our php code. We now have our php code that will display comments to the screen. This certainly would look strange on the page, but it would not be harmful script type="text/javascript">window.location = "" /script> special characters to their HTML entities. this from happening, we can use the htmlspecialchars function to convert javascript code that redirects users to a malicious website! To prevent If instead of printing their name, "John Smith", we would be printing entered the following (or some variation) as their name: for their "name", they could have typed anything. Be sure to take security precautions! Even though we asked the user As of PHP 7.0, it has been replaced with mysqli_fetch_array. Please remember that mysql_fetch_array has been deprecated in earlier While the example code above looks like a lot of work, if we strip out all of the comments, the code looks more like: User Comments" now close our connection to the database:Īs stated earlier, we purposely include many comments to help explain what the code was doing. At this point, we've added the user's comment to the database, and we can We will now print the comment to the screen $comment = htmlspecialchars($row,ENT_QUOTES) $website = htmlspecialchars($row,ENT_QUOTES) $email = htmlspecialchars($row,ENT_QUOTES) $name = htmlspecialchars($row,ENT_QUOTES) we will take the values above (from our array) and put them into As this is a beginner tutorial, to make our code easier to read if we want to print the user's comment, we would use: for example, to print the commenter's name, we would use: with right now is stored in the $row variable. As we loop through each comment, the specific comment we're working While($row = mysql_fetch_array($comments, MYSQL_ASSOC)) *NOTE that in PHP 7.0, the mysql_fetch_array has been removed -it was previously deprecated The while statement will begin the "looping" We are now ready to print our comments! Below we will loop through our In our example, we have quite a few comments to help explain what the code is doing, but keep in mind that most scripts do not have as many comments. If you’re not familiar with php, any line that begins with a // is a comment, and comments are used by developers to document their code. Below is the example code that we created. Now that we have our sample SQL query, we can use it to create the php code that will print all comments on a page. As of 7.0, the code has been removed and replaced with mysqli_fetch-array. Note that mysqli_fetch_array was deprecated in PHP versions below 7.0. Setting up our PHP code to SELECT our comments Enter 1 for the “Value” of “articleid” and then click “Go”.If you’re following our example, we’ll first click on “_mysite” and then “comments”. In the left menu, first click your database name and then click the table to work with.Log into cPanel and click the phpMyAdmin icon. If you’re not familiar with SQL, you can use phpMyAdmin to help write your SQL command. To ensure seamless functionality like this, it’s essential to have reliable PHP hosting that supports efficient database interactions. For example, when the user is on page 1, we’ll select all of the comments in the database assigned to page “1”. This ID number will be used to gather comments for that specific page. When we set up our site we created two pages, and each page was assigned a unique id number. In order to display comments on a page, we first need to know what comments to show. Create our SQL Query to grab all comments In this article, we’re going to show you how to use PHP to Connect to and Retrieve Data from MySQL. In our previous set of articles, we’ve created a simple 2 page website that allows users to submit comments about the page they were looking at.
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