解决Your requirements could not be resolved to an installable set of packages.

wangyetao@linux_u1604:~/LinuxRoom/PROJECT_CODE_PHP/raw_materials/raw_materials$ composer install Loading composer repositories with package information Installing dependencies (including require-dev) from lock file Your requirements could not be resolved to an installable set of packages.Problem 1 - phpoffice/phpspreadsheet dev-master requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. - phpoffice/phpspreadsheet dev-master requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. - Installation request for phpoffice/phpspreadsheet dev-master -> satisfiable by phpoffice/phpspreadsheet[dev-master].To enable extensions, verify that they are enabled in your .ini files: - /etc/php/7.0/cli/php.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/15-xml.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-dom.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-gd.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-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-simplexml.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 - /etc/php/7.0/cli/conf.d/20-wddx.ini - /etc/php/7.0/cli/conf.d/20-xdebug.ini - /etc/php/7.0/cli/conf.d/20-xmlreader.ini - /etc/php/7.0/cli/conf.d/20-xmlwriter.ini - /etc/php/7.0/cli/conf.d/20-xsl.ini You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.


composer install --ignore-platform-reqs 忽略安装,update也一样,当composer.json版本较高时,就用它!

wangyetao@linux_u1604:~/LinuxRoom/PROJECT_CODE_PHP/raw_materials/raw_materials$ composer install --ignore-platform-reqs Loading composer repositories with package information Updating dependencies (including require-dev) Package operations: 3 installs, 0 updates, 0 removals - Installing qiniu/php-sdk (dev-master d2ed225): Cloning d2ed2258fa from cache - Installing psr/simple-cache (dev-master 408d5ea): Cloning 408d5eafb8 from cache - Installing phpoffice/phpspreadsheet (dev-master 36acc37): Cloning 36acc37287 from cache phpoffice/phpspreadsheet suggests installing mpdf/mpdf (Option for rendering PDF with PDF Writer) phpoffice/phpspreadsheet suggests installing dompdf/dompdf (Option for rendering PDF with PDF Writer) phpoffice/phpspreadsheet suggests installing tecnick.com/tcpdf (Option for rendering PDF with PDF Writer) phpoffice/phpspreadsheet suggests installing jpgraph/jpgraph (Option for rendering charts, or including charts with PDF or HTML Writers) Writing lock file Generating autoload files wangyetao@linux_u1604:~/LinuxRoom/PROJECT_CODE_PHP/raw_materials/raw_materials$ composer update










【解决Your requirements could not be resolved to an installable set of packages.】

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