Search results for: "retrieve values"

What SQL statement can be used to retrieve distinct values from a column in a database table?

To retrieve distinct values from a column in a database table, you can use the SQL SELECT DISTINCT statement. This statement allows you to fetch uniqu...

How can PHP sessions be used to store and retrieve values for variables?

PHP sessions can be used to store and retrieve values for variables by starting a session using session_start(), assigning values to session variables...

How can SELECT DISTINCT be used in PHP to retrieve unique values from a database?

When retrieving data from a database using SQL queries in PHP, the SELECT DISTINCT statement can be used to retrieve unique values from a specific col...

How can you store and retrieve values in a PHP session?

To store and retrieve values in a PHP session, you can use the $_SESSION superglobal array. To store a value, you can simply assign it to a key in the...

What potential issues can arise when trying to retrieve cookie values in PHP?

One potential issue when trying to retrieve cookie values in PHP is that the cookie might not exist or have been set. To solve this, you can use the i...