First create a query page:
Copy the code The code is as follows:
Add record
& gt ;You should still remember that in the previous topic, we have introduced how to transfer values between PHP pages technology. Similarly, in this page, when we click submit, we will pass the two parameters ename and pcname to the add_finish.php page through the post method.
Next is the most important thing, let’s take a look at how to write statements to add MySQL data in PHP:
Copy the code The code is as follows:
$link =mysql_connect("localhost" ,"root","Administrator password");
mysql_select_db("infosystem", $link);
$exec="insert into info (ename,pcname) values ('".$_POST["ename"]." ','".$_POST["pcname"]."')";
mysql_query("SET NAMES GB2312");
mysql_query($exec, $link);
mysql_close($link);
echo "Added successfully ! ";
?>
The red part is the key SQL statement for adding MySQL data to PHP. Then use mysql_query to execute this SQL statement.
Another point is that everyone should make slight modifications to the program according to their own database structure to meet everyone's specific needs.
Today’s topic is relatively simple and briefly introduces how to add MySQL data records using PHP. I will add a more detailed introduction in a future topic.
The above introduces my life would suck without you PHP to add MySQL data recording code, including the content of my life would suck without you. I hope it will be helpful to friends who are interested in PHP tutorials.

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Arrays can be stored in PHP sessions. 1. Start the session and use session_start(). 2. Create an array and store it in $_SESSION. 3. Retrieve the array through $_SESSION. 4. Optimize session data to improve performance.

PHP session garbage collection is triggered through a probability mechanism to clean up expired session data. 1) Set the trigger probability and session life cycle in the configuration file; 2) You can use cron tasks to optimize high-load applications; 3) You need to balance the garbage collection frequency and performance to avoid data loss.

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PHPsessionstrackuserdataacrossmultiplepagerequestsusingauniqueIDstoredinacookie.Here'showtomanagethemeffectively:1)Startasessionwithsession_start()andstoredatain$_SESSION.2)RegeneratethesessionIDafterloginwithsession_regenerate_id(true)topreventsessi

In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.

The session realizes user authentication through the server-side state management mechanism. 1) Session creation and generation of unique IDs, 2) IDs are passed through cookies, 3) Server stores and accesses session data through IDs, 4) User authentication and status management are realized, improving application security and user experience.


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