Scope

scope.php

<?php

$global_variable = 'I am a global variable';
d( $global_variable );

function test_scope( $local_variable ) {
	$local_variable .= ' I am only accessible to my function!';

	echo '========= in the test_scope function ========';
	d( $local_variable );
	d( $global_variable );
}

//test_scope( 'testing from global space' );

d( $local_variable );
ddd( $global_variable );