Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Execute an external program
<?php exec(string $command, array &$output = null, int &$result_code = null): string|false
<?php         if ($wantsToSupport === true) {

            if (PHP_OS_FAMILY == 'Darwin') {

                exec('open https://github.com/pestphp/pest');

            }

            if (PHP_OS_FAMILY == 'Windows') {

                exec('start https://github.com/pestphp/pest');
<?php                 exec('open https://github.com/pestphp/pest');

            }

            if (PHP_OS_FAMILY == 'Windows') {

                exec('start https://github.com/pestphp/pest');

            }

            if (PHP_OS_FAMILY == 'Linux') {

                exec('xdg-open https://github.com/pestphp/pest');
<?php                 exec('start https://github.com/pestphp/pest');

            }

            if (PHP_OS_FAMILY == 'Linux') {

                exec('xdg-open https://github.com/pestphp/pest');

            }

        }

    }