요구 사항을 설치할 수있는 패키지 세트로 해결할 수 없습니다. (Laravel)

Question

내가 laravel를 설치하려고하고

작곡가가 만든 프로젝트가 --prefer - 거리 laravel/laravel 블로그 나는 다음과 같은 오류가

... 그것은 무엇을 할 수있는 명령을 신청하는 ?

Problem 1 
    - laravel/framework v5.2.9 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.8 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.7 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.6 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.5 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.43 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.42 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.40 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.4 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.39 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.38 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.37 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.36 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.35 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.34 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.33 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.32 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.31 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.30 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.3 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.29 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.28 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.27 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.26 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.25 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.24 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.23 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.22 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.21 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.20 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.2 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.19 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.18 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.17 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.16 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.15 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.14 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.13 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.12 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.11 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.10 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.1 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework v5.2.0 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - laravel/framework 5.2.41 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 
    - Installation request for laravel/framework 5.2.* -> satisfiable by laravel/framework[5.2.41, v5.2.0, v5.2.1, v5.2.10, 

v5.2.11, v5.2.12, v5.2.13, v5.2.14, v5.2.15, v5.2.16, v5.2.17, v5.2.18, v5.2.19, v5.2.2, v5.2.20, v5.2.21, v5.2.22, v5.2.23, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.29, v5.2.3, v5.2.30, v5 .2.31, v5.2.32, v5.2.33, v5.2.34, v5.2.35, v5.2.36, v5.2.37, v5.2.38, v5.2.39, v5.2.4, v5.2.40, v5.2.42, v5 .2.43, v5.2.5, v5.2.6, v5.2.7, v5.2.8, v5.2.9].

To enable extensions, verify that they are enabled in those .ini files: 
    - /etc/php/7.0/cli/php.ini 
    - /etc/php/7.0/cli/conf.d/10-mysqlnd.ini 
    - /etc/php/7.0/cli/conf.d/10-opcache.ini 
    - /etc/php/7.0/cli/conf.d/10-pdo.ini 
    - /etc/php/7.0/cli/conf.d/20-calendar.ini 
    - /etc/php/7.0/cli/conf.d/20-ctype.ini 
    - /etc/php/7.0/cli/conf.d/20-exif.ini 
    - /etc/php/7.0/cli/conf.d/20-fileinfo.ini 
    - /etc/php/7.0/cli/conf.d/20-ftp.ini 
    - /etc/php/7.0/cli/conf.d/20-gettext.ini 
    - /etc/php/7.0/cli/conf.d/20-iconv.ini 
    - /etc/php/7.0/cli/conf.d/20-json.ini 
    - /etc/php/7.0/cli/conf.d/20-mcrypt.ini 
    - /etc/php/7.0/cli/conf.d/20-mysqli.ini 
    - /etc/php/7.0/cli/conf.d/20-pdo_mysql.ini 
    - /etc/php/7.0/cli/conf.d/20-phar.ini 
    - /etc/php/7.0/cli/conf.d/20-posix.ini 
    - /etc/php/7.0/cli/conf.d/20-readline.ini 
    - /etc/php/7.0/cli/conf.d/20-shmop.ini 
    - /etc/php/7.0/cli/conf.d/20-sockets.ini 
    - /etc/php/7.0/cli/conf.d/20-sysvmsg.ini 
    - /etc/php/7.0/cli/conf.d/20-sysvsem.ini 
    - /etc/php/7.0/cli/conf.d/20-sysvshm.ini 
    - /etc/php/7.0/cli/conf.d/20-tokenizer.ini 
    You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode. 

Answer 1

따라주십시오 laravel 워드 프로세서 5.1 : https://laravel.com/docs/5.1#installation PHP의`mbstring` 확장이없는