blocks|key|2929343|text|您使用的是哪个PHP版本？Laravel-6.*需要PHP+>=+7.2.0。检查你的server-requirements中的Laravel+6.*。您可能没有遇到laravel+6.*的requirements。满足要求后，在xampp的htdocs文件夹或wamp+for服务器的www文件夹中运行命令。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2929344|entityMap|0|LINK|mutability|MUTABLE|url|https://laravel.com/docs/6.x#server-requirements|1^0|7|3|D|B|Q|C|1S|B|2B|B|37|5|3D|6|3N|4|3Z|3|17|J|0|2N|C|1|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]]|D|@$9|17|A|18|1|19]|$9|1A|A|1B|1|1C]]|E|$]]|$1|F|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]|N|$5|I|J|K|E|$L|M]]]]

Which <code>PHP</code> version you are using? <code>Laravel-6.*</code> need <code>PHP &gt;= 7.2.0</code>. Check your <a href="https://laravel.com/docs/6.x#server-requirements" rel="nofollow noreferrer">server-requirements</a> for <code>Laravel 6.*</code>. May be you did not meeting the <a href="https://laravel.com/docs/6.x#server-requirements" rel="nofollow noreferrer">requirements</a> for <code>laravel 6.*</code>. And after meeting the requirements run your command inside <code>htdocs</code> folder for <code>xampp</code> or <code>www</code> folder for <code>wamp</code> webserver.

blocks|key|2929346|text|您的命令不再受支持，因此您应该使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2929347|composer+create-project+--prefer-dist+laravel/laravel="6.*"+laravel6|code-block|syntax|javascript|2929348|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

your command are no longer supports so you should use:

<pre><code>composer create-project --prefer-dist laravel/laravel="6.*" laravel6
</code></pre>

blocks|key|4396913|text|你忘了加上“--首选-dist”。因此，在您的示例中，您必须使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4396914|composer+create-project+laravel/laravel+--prefer-dist|code-block|syntax|javascript|4396915|才能让它正常工作。因此，只需删除d:\xampp\htdocs\laravel中的所有文件，然后通过对cmd执行以下命令重试(我猜您使用的是Windows!)：|4396916|+cd+d:\xampp\htdocs\laravel|4396917|composer+create-project+laravel/laravel+-首选-dist|4396918|我想这对你来说应该很好。|4396919|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

You forgot to add the "--prefer-dist " . So in your case, you have to use the:

<pre><code>composer create-project laravel/laravel --prefer-dist
</code></pre>

in order to make it work. So just remove all the files from: d:\xampp\htdocs\laravel and then try again by following the below commands to your cmd (I guess you are using Windows!):

<pre><code> cd d:\xampp\htdocs\laravel
</code></pre>

composer create-project laravel/laravel --prefer-dist

I think this should work for you just fine

blocks|key|2929412|text|您不需要指定Laravel+6的版本。默认情况下，Laravel+6会安装最新版本及其扩展。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2929413|在我写这篇文章时，Laravel的当前和最新版本是:+Laravel+6.0.4，下面的命令将在您的laravel6项目中安装当前和最新版本。|2929414|composer+create-project+-首选-dist+laravel/laravel+laravel6|2929415|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

You don't need to specify the version of Laravel 6. By default, Laravel 6 installs the latest version and its extension. 

As I'm writing now the current and latest version of Laravel is: Laravel 6.0.4
The command below will install the current and the latest version in your laravel6 project. 

composer create-project --prefer-dist laravel/laravel laravel6

blocks|key|614116|text|您不需要指定Laravel+6的版本。默认情况下，Laravel+6会安装最新版本及其扩展。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|614117|通过Composer+Create创建项目-|614118|或者，您也可以通过在终端中发出Composer+create-project命令来安装Laravel：|614119|composer+create-project+--prefer-dist+laravel/laravel+your_project_name|code-block|syntax|javascript|614120|我想这对你会有帮助的。更多详情请访问拉威尔官方网站：https://laravel.com/docs/6.x/installation|offset|length|614121|entityMap|0|LINK|mutability|MUTABLE|url|https://laravel.com/docs/6.x/installation^0|0|0|0|0|Q|15|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

You don't need to specify the version of Laravel 6. By default, Laravel 6 installs the latest version and its extension.

Via Composer Create-Project

Alternatively, you may also install Laravel by issuing the Composer create-project command in your terminal:

<pre><code>composer create-project --prefer-dist laravel/laravel your_project_name
</code></pre>

I think it will be helpful for you. for more details visit laravel official website : <a href="https://laravel.com/docs/6.x/installation" rel="nofollow noreferrer">https://laravel.com/docs/6.x/installation</a>

blocks|key|4397017|text|请在您的系统上升级PHP版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4397018|然后安装laravel命令，它会根据PHP的版本自动安装lettest版本。|4397019|或者您可以在laravel命令上提及，并在laravel+installer命令后面设置laravel版本，如"6.0*“。|4397020|我希望这能行得通|4397021|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Kindly upgrade your PHP version on your system.
Then install laravel commands
It will automatically install the lettest version depends on the PHP version.
Or you can mention on laravel command and set the laravel version like &quot;6.0*&quot; behind the laravel installer command.
I hope this will works

blocks|key|4397046|text|请检查缓存目录(/home/keynes/.composer/+cache+)上的权限，它报告无法写入此目录，或者该目录可能不存在。也许它正在从缓存目录中安装一个较旧的laravel版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4397047|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Please check the permissions on the cache dir (/home/keynes/.composer/cache)
It's complaining it cannot write to this dir, or it may not exist.
Maybe it is installing an older laravel version from the cache dir.

blocks|key|907726|text|您正在运行的命令应该可以工作。我会尝试清除composer缓存：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|907727|composer+clear-cache|code-block|syntax|javascript|907728|然后|907729|composer+update
composer+create-project+--prefer-dist+laravel/laravel="6.*"+laravel6|907730|在重试之前。查看屏幕截图，似乎在~/.composer目录中有一些权限错误。这也可能导致composer+clear-cache命令失败并返回错误。|offset|length|style|CODE|907731|因此，如果清除缓存无效或出现错误，您可以尝试将~/.composer目录移动到备份位置，以强制composer重新生成其设置。|907732|mv+~/.composer+~/.composer.backup|907733|然后再试一次(请注意，composer+update可能会花费比平时明显更长的时间，并且可能会有一段时间没有响应)：|907734|composer+update
composer+create-project+--prefer-dist+laravel/laravel="6.*"+laravel6|907735|如果它仍然不起作用，那么您可以恢复备份：|907736|rm+-rf+~/.composer
mv+~/.composer.backup+~/.composer|907737|然后查看下面的输出|907738|composer+config+--list+--global|907739|可能有助于确定下一步要尝试的东西。|907740|entityMap^0|0|0|0|0|G|B|18|K|0|N|B|0|0|B|F|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1C|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1D|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|1E|8|@$M|1F|N|1G|O|P]|$M|1H|N|1I|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1J|8|@$M|1K|N|1L|O|P]]|9|@]|A|$]]|$1|S|3|T|5|D|7|1M|8|@]|9|@]|A|$E|F]]|$1|U|3|V|5|6|7|1N|8|@$M|1O|N|1P|O|P]]|9|@]|A|$]]|$1|W|3|X|5|D|7|1Q|8|@]|9|@]|A|$E|F]]|$1|Y|3|Z|5|6|7|1R|8|@]|9|@]|A|$]]|$1|10|3|11|5|D|7|1S|8|@]|9|@]|A|$E|F]]|$1|12|3|13|5|6|7|1T|8|@]|9|@]|A|$]]|$1|14|3|15|5|D|7|1U|8|@]|9|@]|A|$E|F]]|$1|16|3|17|5|6|7|1V|8|@]|9|@]|A|$]]|$1|18|3|-4|5|6|7|1W|8|@]|9|@]|A|$]]]|19|$]]

The commands you are running should work. I would try clearing the composer cache:
<pre><code>composer clear-cache
</code></pre>
and then
<pre><code>composer update
composer create-project --prefer-dist laravel/laravel=&quot;6.*&quot; laravel6
</code></pre>
before trying again. Looking at the screenshots there seem to be some permissions errors in the <code>~/.composer</code> directory. This might also cause the <code>composer clear-cache</code> command to fail with an error.
So if clearing the cache doesn't work or you get an error, you might try moving the <code>~/.composer</code> directory to a backup location, to force composer to regenerate it's settings.
<pre><code>mv ~/.composer ~/.composer.backup
</code></pre>
And then try it again (be aware that <code>composer update</code> will likely take a noticeably longer time than usual and might be unresponsive for a while):
<pre><code>composer update
composer create-project --prefer-dist laravel/laravel=&quot;6.*&quot; laravel6
</code></pre>
If it still doesn't work, then you can restore the backup:
<pre><code>rm -rf ~/.composer
mv ~/.composer.backup ~/.composer
</code></pre>
Then looking at the output of
<pre><code>composer config --list --global
</code></pre>
might help determine the next thing to try.

I want to install Laravel 6 with Composer. I try with that command:

<pre><code>composer create-project --prefer-dist laravel/laravel laravel6 "6.*"
</code></pre>

But i get that result:

<pre><code> [InvalidArgumentException] 
 Could not find package laravel/laravel with version 6.*. 
</code></pre>

<a href="https://i.stack.imgur.com/5a3c5.png" rel="nofollow noreferrer">Here is a screenshot</a>

If i use:

<pre><code>composer create-project --prefer-dist laravel/laravel blog 
</code></pre>

It install the v5.5.28
<a href="https://i.stack.imgur.com/BLXaN.png" rel="nofollow noreferrer">Here is a screenshot</a>

What can be the problem?

Cant install Laravel 6

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想用Composer安装Laravel 6。我尝试使用该命令：composer create-project --prefer-dist laravel/laravel laravel6 "6.*"但我得到的结果是：  [InvalidArgumentException]                                  Could not find package larave

问无法安装Laravel 6
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问无法安装Laravel 6
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