問題?

$ laravel new blog Crafting application... 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- Installation request for league/flysystem 1.0.62 -> satisfiable by league/flysystem[1.0.62].- league/flysystem 1.0.62 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.Problem 2- Installation request for symfony/css-selector v5.0.2 -> satisfiable by symfony/css-selector[v5.0.2].- symfony/css-selector v5.0.2 requires php ^7.2.5 -> your PHP version (7.2.1) does not satisfy that requirement.Problem 3- Installation request for symfony/mime v5.0.2 -> satisfiable by symfony/mime[v5.0.2].- symfony/mime v5.0.2 requires php ^7.2.5 -> your PHP version (7.2.1) does not satisfy that requirement.Problem 4- Installation request for symfony/service-contracts v2.0.1 -> satisfiable by symfony/service-contracts[v2.0.1].- symfony/service-contracts v2.0.1 requires php ^7.2.5 -> your PHP version (7.2.1) does not satisfy that requirement.Problem 5- Installation request for symfony/translation-contracts v2.0.1 -> satisfiable by symfony/translation-contracts[v2.0.1].- symfony/translation-contracts v2.0.1 requires php ^7.2.5 -> your PHP version (7.2.1) does not satisfy that requirement.Problem 6- league/flysystem 1.0.62 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.- laravel/framework v6.9.0 requires league/flysystem ^1.0.8 -> satisfiable by league/flysystem[1.0.62].- Installation request for laravel/framework v6.9.0 -> satisfiable by laravel/framework[v6.9.0].To enable extensions, verify that they are enabled in your .ini files:- D:\phpstudy\PHPTutorial\php\php-7.2.1-nts\php.iniYou can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

方法

我的本地是7.0.1，而下載下來的原來是運行在7.0.8版本的， 于是執(zhí)行:composer install 時，報了一堆錯。解決辦法：刪掉composer.lock,重新composer install或者使用phpstudy_pro直接切換php版本也可以

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總結

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