How can the variable $db be made accessible within a function in PHP?

To make the variable $db accessible within a function in PHP, you can use the 'global' keyword inside the function to access the variable from the global scope. By declaring $db as a global variable within the function, you can then use it as needed within the function's code block. 

$db = new mysqli('localhost', 'username', 'password', 'database');

function myFunction() {
    global $db;
    
    // Now $db can be used within this function
    $result = $db->query("SELECT * FROM my_table");
    
    // Rest of the function code
}

Keywords

variable $db function accessible PHP

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