PHP compact function receives each key and tries to search a variable with that same name. If a variable is found, then it builds an associate array.

In Laravel, the compact() function is a PHP function that is commonly used in views to pass variables from the controller to the view. It takes a list of variable names as arguments and creates an associative array where the keys are the variable names and the values are the variable values.

For example:

php

$name = 'John';

$email = 'john@example.com';

return view('user.profile', compact('name', 'email'));

This code passes the variables $name and $email to the user.profile view. In the view, you can directly use these variables without explicitly passing them from the controller. For instance:

php

<h1>Welcome, <?php echo $name; ?></h1>

<p>Your email is: <?php echo $email; ?></p>

Using compact() can help keep your code cleaner and more readable by reducing the number of lines needed to pass variables to views. It’s particularly useful when you have multiple variables to pass.