How can PHP developers prevent the insertion of random spaces in textareas when saving data to a database?

When saving data from a textarea to a database, PHP developers can prevent the insertion of random spaces by using the trim() function to remove any leading or trailing spaces before saving the data. This ensures that only the intended content is stored in the database without any unwanted spaces.

// Assuming $textareaData contains the data from the textarea
$cleanedData = trim($textareaData);

// Save $cleanedData to the database