Updating database using php
To update a record in any table it is required to locate that record by using a conditional clause.
Below example uses primary key to match a record in employee table.
This makes it much more effective for an update script.
In this part I will show you how to do the two final actions, updating your database and deleting records from it.
The following variables are used to calculate the correct numbers for the // PAGINATION VARIABLES // page is the current page, if there's nothing set, default is page 1 $page = isset($_GET['page']) ?
$_GET['page'] : 1; // set records or rows of data per page $records_per_page = 5; // calculate for the query LIMIT clause $from_record_num = ($records_per_page * $page) - $records_per_page; // clickable page numbers // find out total pages $total_pages = ceil($total_rows / $records_per_page); // range of num links to show $range = 1; // display links to 'range of pages' around 'current page' $initial_num = $page - $range; $condition_limit_num = ($page $range) 1; for ($x=$initial_num; $x If you have any more questions, please feel free to contact me now.
To learn more about SQL, please visit our SQL tutorial.
In the previous chapter we created an empty table named "My Guests" with five columns: "id", "firstname", "lastname", "email" and "reg_date". Note: If a column is AUTO_INCREMENT (like the "id" column) or TIMESTAMP with default update of current_timesamp (like the "reg_date" column), it is no need to be specified in the SQL query; My SQL will automatically add the value.
First of all, we connect to the database and select the appropriate record.