protected function getStdin(): ?string
    {
        if (\ftell(\STDIN) !== 0) {
            return null;
        }

        $inputs = '';

        while (! \feof(\STDIN)) {
            $inputs .= \fread(\STDIN, 1024);
        }

        return $inputs;
    }
protected function getStdin(): ?string
    {
        if (\ftell(\STDIN) !== 0) {
            return null;
        }

        $inputs = '';

        while (! \feof(\STDIN)) {
            $inputs .= \fread(\STDIN, 1024);
        }

        return $inputs;
    }
protected function getStdin ( ) : ? string { if ( \ ftell ( \ STDIN ) !== 0 ) { return null ; } $ inputs = '' ; while ( ! \ feof ( \ STDIN ) ) { $ inputs .= \ fread ( \ STDIN , 1024 ) ; } return $ inputs ; }
Get content from stdin.

@return null|string
Get content from stdin .