title: I can't install laravel 6 even my php is 7.2
body: <p>I working on my local computer(server). This is first time to install Laravel 6. By typing this command,</p>
  
  <pre><code>Laravel new project
  </code></pre>
  
  <p>The said</p>
  
  <pre><code>Installing dependencies (including require-dev) from lock file
  Your requirements could not be resolved to an installable set of packages.
  
    Problem 1
      - This package requires php ^7.2 but your HHVM version does not satisfy that requirement.
    Problem 2
      - Installation request for doctrine/lexer 1.2.0 -&gt; satisfiable by doctrine/lexer[1.2.0].
      - doctrine/lexer 1.2.0 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 3
      - Installation request for laravel/framework v6.14.0 -&gt; satisfiable by laravel/framework[v6.14.0].
      - laravel/framework v6.14.0 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 4
      - Installation request for laravel/tinker v2.2.0 -&gt; satisfiable by laravel/tinker[v2.2.0].
      - laravel/tinker v2.2.0 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 5
      - Installation request for monolog/monolog 2.0.2 -&gt; satisfiable by monolog/monolog[2.0.2].
      - monolog/monolog 2.0.2 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 6
      - Installation request for symfony/css-selector v5.0.4 -&gt; satisfiable by symfony/css-selector[v5.0.4].
      - symfony/css-selector v5.0.4 requires php ^7.2.5 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 7
      - Installation request for symfony/mime v5.0.4 -&gt; satisfiable by symfony/mime[v5.0.4].
      - symfony/mime v5.0.4 requires php ^7.2.5 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 8
      - Installation request for symfony/service-contracts v2.0.1 -&gt; satisfiable by symfony/service-contracts[v2.0.1].
      - symfony/service-contracts v2.0.1 requires php ^7.2.5 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 9
      - Installation request for symfony/translation-contracts v2.0.1 -&gt; satisfiable by symfony/translation-contracts[v2.0.1].
      - symfony/translation-contracts v2.0.1 requires php ^7.2.5 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 10
      - Installation request for phpdocumentor/reflection-docblock 5.0.0 -&gt; satisfiable by phpdocumentor/reflection-docblock[5.0.0].
      - phpdocumentor/reflection-docblock 5.0.0 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 11
      - Installation request for phpunit/php-code-coverage 7.0.10 -&gt; satisfiable by phpunit/php-code-coverage[7.0.10].
      - phpunit/php-code-coverage 7.0.10 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 12
      - Installation request for phpunit/phpunit 8.5.2 -&gt; satisfiable by phpunit/phpunit[8.5.2].
      - phpunit/phpunit 8.5.2 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 13
      - Installation request for sebastian/global-state 3.0.0 -&gt; satisfiable by sebastian/global-state[3.0.0].
      - sebastian/global-state 3.0.0 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 14
      - Installation request for sebastian/type 1.1.3 -&gt; satisfiable by sebastian/type[1.1.3].
      - sebastian/type 1.1.3 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
    Problem 15
      - doctrine/lexer 1.2.0 requires php ^7.2 -&gt; your PHP version (7.1.26) does not satisfy that requirement.
      - egulias/email-validator 2.1.15 requires doctrine/lexer ^1.0.1 -&gt; satisfiable by doctrine/lexer[1.2.0].
      - Installation request for egulias/email-validator 2.1.15 -&gt; satisfiable by egulias/email-validator[2.1.15].
  </code></pre>
  
  <p>I am using wamp server</p>
  
  <p><a href="https://i.stack.imgur.com/aUW0r.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aUW0r.png" alt="enter image description here"></a></p>
  
  <p>My composer version is</p>
  
  <p><a href="https://i.stack.imgur.com/tdavV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tdavV.png" alt="enter image description here"></a></p>
  
  <p>CLI version</p>
  
  <p><a href="https://i.stack.imgur.com/WukeC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WukeC.png" alt="enter image description here"></a></p>
  
  <p>How can I fix this? thank you in advance!</p>