compact-variables-into-array.md

Compact variables into an array

The PHP compact function creates a key-value array based on variables in the current symbol table. Effectively, passing the name of a variable as a string will create an element in the generated array with the variable name as the key and its value as the value.

Parameter names are case sensitive.

An example from the documentation:

$city  = "San Francisco";
$state = "CA";
$event = "SIGGRAPH";

$location_vars = array("city", "state");

$result = compact("event", "nothing_here", $location_vars);
print_r($result);

Would output:

Array
(
    [event] => SIGGRAPH
    [city] => San Francisco
    [state] => CA
)

You might use this in Laravel, or other situations where you pass data to views:

$firstName = "John";
$lastnNme = "Doe";

view('welcome', compact("firstName","lastName"));