<?php
    echo('$_GET, at start of script<br>');
    var_dump($_GET);
    echo('<hr>');
 
    echo('unset($_GET), then dump it ()obviously, we expect an error<br>');
    unset($_GET);
    var_dump($_GET);
    echo('<hr>');
 
    echo('Now, define $_GEt as an array, and add a few items, and validate it<br>');
    $_GET = array();
    $_GET['one'] = 1;
    $_GET['two plus two'] = 5;
    var_dump($_GET);
    echo('<hr>');
 
    echo('Now, attempt to validate the $_GET<br>');
 
    $fileters = array('one' => FILTER_VALIDATE_INT,
                      'two plus two' => FILTER_VALIDATE_INT,
                        );
 
    $validateGet = filter_var_array($_GET, $fileters, false);
    echo('Validation result = ');
    var_dump($validateGet);

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