common.php

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<?php

function assertCli()
{
    if (php_sapi_name() != 'cli' && !getenv('PHP_IS_CLI')) {
        echo 'Script cannot be called from web-browser (if you are indeed calling via cli,
set environment variable PHP_IS_CLI to work around this).';
        exit(1);
    }
}

function prefix_is($comp, $subject)
{
    return strncmp($comp, $subject, strlen($comp)) === 0;
}

function postfix_is($comp, $subject)
{
    return strlen($subject) < $comp ? false : substr($subject, -strlen($comp)) === $comp;
}

// Load useful stuff like FSTools
require_once dirname(__FILE__) . '/../extras/HTMLPurifierExtras.auto.php';

// vim: et sw=4 sts=4