output

$ php requirer.php 
before php tag in required.php
inside php tag in required.phpafter php tag in required.php
require_result: 1
global_var: global var from required.php

required.php

before php tag in required.php
<?php
global $global_var;
$global_var = "global var from required.php";
echo "inside php tag in required.php";
?>
after php tag in required.php

requirer.php

<?php
$require_result = require("required.php");
echo "require_result: $require_result\n";
echo "global_var: $global_var\n";