src/System/Console.php
public static function ask($question, $defaultValue = null, $secret = false)
    {
        $value = '';
        while (trim($value) == '') {
            self::writeln('');
            self::write(' ' . $question, 'info');
            if ($defaultValue !== null) {
                self::write(' [');
                self::write($defaultValue, 'comment');
                self::write(']');
            }
            self::writeln(':');
            if ($secret) {
                self::write(' > ');
                if (self::$testValue === null) {
                    // @codeCoverageIgnoreStart
                    system('stty -echo');
                    $value = trim(fgets(STDIN));
                    system('stty echo');
                    // @codeCoverageIgnoreEnd
                } else {
                    $value = self::$testValue;
                }
            } else {
                if (self::$testValue === null) {
                    // @codeCoverageIgnoreStart
                    $value = readline(' > ');
                    // @codeCoverageIgnoreEnd
                } else {
                    $value = self::$testValue;
                }
            }
            if (trim($value) == '') {
                // @codeCoverageIgnoreStart
                $value = $defaultValue;
                // @codeCoverageIgnoreEnd
            }
            if (trim($value) == '') {
                // @codeCoverageIgnoreStart
                self::writeln('');
                self::block('[ERROR] A value is required', 'error');
                // @codeCoverageIgnoreEnd
            }
            self::writeln('');
        }
        return trim($value);
    }
public static function ask($question, $defaultValue = null, $secret = false)
    {
        $value = '';
        while (trim($value) == '') {
            self::writeln('');
            self::write(' ' . $question, 'info');
            if ($defaultValue !== null) {
                self::write(' [');
                self::write($defaultValue, 'comment');
                self::write(']');
            }
            self::writeln(':');
            if ($secret) {
                self::write(' > ');
                if (self::$testValue === null) {
                    // @codeCoverageIgnoreStart
                    system('stty -echo');
                    $value = trim(fgets(STDIN));
                    system('stty echo');
                    // @codeCoverageIgnoreEnd
                } else {
                    $value = self::$testValue;
                }
            } else {
                if (self::$testValue === null) {
                    // @codeCoverageIgnoreStart
                    $value = readline(' > ');
                    // @codeCoverageIgnoreEnd
                } else {
                    $value = self::$testValue;
                }
            }
            if (trim($value) == '') {
                // @codeCoverageIgnoreStart
                $value = $defaultValue;
                // @codeCoverageIgnoreEnd
            }
            if (trim($value) == '') {
                // @codeCoverageIgnoreStart
                self::writeln('');
                self::block('[ERROR] A value is required', 'error');
                // @codeCoverageIgnoreEnd
            }
            self::writeln('');
        }
        return trim($value);
    }
Ask question.

@param string $question
@param mixed $defaultValue Default null.
@param boolean $secret Default false.
@return string