Zabbix

<?php

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

** See the GNU Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

/**

 * Verify that function exists and can be called as a function.

 *

 * @param array     $names

 *

 * @return bool

 */

function zbx_is_callable(array $names) {

    foreach ($names as $name) {

        if (!is_callable($name)) {

            return false;

        }

    }

​

    return true;

}

​

/************ REQUEST ************/

function redirect($url) {

    $curl = (new CUrl($url))->removeArgument(CSRF_TOKEN_NAME);

    header('Location: '.$curl->getUrl());

    exit;

}

​

/**

 * Check the HTTP request method.

 *

 * @param string $method  HTTP request method

 *

 * @return bool  true, if the request method matches

 */

function isRequestMethod($method) {

    return (strtolower($method) === strtolower($_SERVER['REQUEST_METHOD']));

}

​

/**

 * Check if request exist.

 *

 * @param string    $name

 *

 * @return bool

 */

function hasRequest($name) {

    return isset($_REQUEST[$name]);

}

​

/**

 * Check request, if exist request - return request value, else return default value.

 *

 * @param string    $name

 * @param mixed     $def

 *

 * @return mixed

 */

function getRequest($name, $def = null) {

    return isset($_REQUEST[$name]) ? $_REQUEST[$name] : $def;

}

​

function countRequest($str = null) {

    if (!empty($str)) {

        $count = 0;

​

        foreach ($_REQUEST as $name => $value) {

            if (strpos($name, $str) !== false) {

                $count++;

            }

        }

​

        return $count;

    }

    else {

        return count($_REQUEST);

    }

}

​