What is the significance of the global variables $db_handler and $smilietbl in the PHP code?

The global variables $db_handler and $smilietbl are significant in the PHP code as they are used to establish a connection to the database and store the table name for smiley faces, respectively. To ensure that these variables are accessible throughout the code, they are declared as global variables. 

<?php
global $db_handler, $smilietbl;

$db_handler = mysqli_connect("localhost", "username", "password", "database");
if (!$db_handler) {
    die("Connection failed: " . mysqli_connect_error());
}

$smilietbl = "smiley_faces";
?>

Keywords

global variables $db_handler $smilietbl PHP code significance

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