Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Gets the value of a single or all environment variables
<?php getenv(?string $name = null, bool $local_only = false): string|array|false
<?php         $g = ($color >> 8) & 255;

        $b = $color & 255;



        if (getenv('COLORTERM') !== 'truecolor') {

            return (string) $this->degradeHexColorToAnsi($r, $g, $b);

        }
<?php     public function getWidth(): int

    {

        $width = getenv('COLUMNS');

        if ($width !== false) {

            return (int) trim($width);

        }
<?php     public function getHeight(): int

    {

        $height = getenv('LINES');

        if ($height !== false) {

            return (int) trim($height);

        }
<?php     private function initDimensions(): void

    {

        if (DIRECTORY_SEPARATOR === '\\') {

            if (preg_match('/^(\d+)x(\d+)(?: \((\d+)x(\d+)\))?$/', trim(getenv('ANSICON')), $matches)) {



                self::$width  = (int) $matches[1];