Laravel沒有安裝依賴不正確的PHP版本

因爲php版本，我無法安裝所有laravel依賴項，但我使用xampp（PHP 7.0.13）使用echo phpversion();來確定我的PHP版本，但是這個laravel一直告訴我，我當我安裝一個新的laravel目錄時，使用php版本5.4.24。Laravel沒有安裝依賴不正確的PHP版本

Microsoft Windows [Version 10.0.14393] 
(c) 2016 Microsoft Corporation. All rights reserved. 

C:\Users\User>cd C:\xampp 

C:\xampp>laravel new htdocs 
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 
    - This package requires php >=5.6.4 but your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 2 
    - Installation request for classpreloader/classpreloader 3.1.0 -> satisfiable by classpreloader/classpreloader[3.1.0]. 
    - classpreloader/classpreloader 3.1.0 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 3 
    - Installation request for laravel/framework v5.3.28 -> satisfiable by laravel/framework[v5.3.28]. 
    - laravel/framework v5.3.28 requires php >=5.6.4 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 4 
    - Installation request for league/flysystem 1.0.32 -> satisfiable by league/flysystem[1.0.32]. 
    - league/flysystem 1.0.32 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 5 
    - Installation request for nikic/php-parser v3.0.2 -> satisfiable by nikic/php-parser[v3.0.2]. 
    - nikic/php-parser v3.0.2 requires php >=5.5 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 6 
    - Installation request for symfony/console v3.1.8 -> satisfiable by symfony/console[v3.1.8]. 
    - symfony/console v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 7 
    - Installation request for symfony/debug v3.1.8 -> satisfiable by symfony/debug[v3.1.8]. 
    - symfony/debug v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 8 
    - Installation request for symfony/event-dispatcher v3.2.1 -> satisfiable by symfony/event-dispatcher[v3.2.1]. 
    - symfony/event-dispatcher v3.2.1 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 9 
    - Installation request for symfony/finder v3.1.8 -> satisfiable by symfony/finder[v3.1.8]. 
    - symfony/finder v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 10 
    - Installation request for symfony/http-foundation v3.1.8 -> satisfiable by symfony/http-foundation[v3.1.8]. 
    - symfony/http-foundation v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 11 
    - Installation request for symfony/http-kernel v3.1.8 -> satisfiable by symfony/http-kernel[v3.1.8]. 
    - symfony/http-kernel v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 12 
    - Installation request for symfony/process v3.1.8 -> satisfiable by symfony/process[v3.1.8]. 
    - symfony/process v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 13 
    - Installation request for symfony/routing v3.1.8 -> satisfiable by symfony/routing[v3.1.8]. 
    - symfony/routing v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 14 
    - Installation request for symfony/translation v3.1.8 -> satisfiable by symfony/translation[v3.1.8]. 
    - symfony/translation v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 15 
    - Installation request for symfony/var-dumper v3.1.8 -> satisfiable by symfony/var-dumper[v3.1.8]. 
    - symfony/var-dumper v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 16 
    - Installation request for phpdocumentor/reflection-common 1.0 -> satisfiable by phpdocumentor/reflection-common[1.0]. 
    - phpdocumentor/reflection-common 1.0 requires php >=5.5 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 17 
    - Installation request for phpdocumentor/reflection-docblock 3.1.1 -> satisfiable by phpdocumentor/reflection-docblock[3.1.1]. 
    - phpdocumentor/reflection-docblock 3.1.1 requires php >=5.5 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 18 
    - Installation request for phpdocumentor/type-resolver 0.2.1 -> satisfiable by phpdocumentor/type-resolver[0.2.1]. 
    - phpdocumentor/type-resolver 0.2.1 requires php >=5.5 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 19 
    - Installation request for phpunit/php-code-coverage 4.0.4 -> satisfiable by phpunit/php-code-coverage[4.0.4]. 
    - phpunit/php-code-coverage 4.0.4 requires php ^5.6 || ^7.0 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 20 
    - Installation request for phpunit/phpunit 5.7.5 -> satisfiable by phpunit/phpunit[5.7.5]. 
    - phpunit/phpunit 5.7.5 requires php ^5.6 || ^7.0 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 21 
    - Installation request for phpunit/phpunit-mock-objects 3.4.3 -> satisfiable by phpunit/phpunit-mock-objects[3.4.3]. 
    - phpunit/phpunit-mock-objects 3.4.3 requires php ^5.6 || ^7.0 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 22 
    - Installation request for sebastian/code-unit-reverse-lookup 1.0.0 -> satisfiable by sebastian/code-unit-reverse-lookup[1.0.0]. 
    - sebastian/code-unit-reverse-lookup 1.0.0 requires php >=5.6 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 23 
    - Installation request for sebastian/environment 2.0.0 -> satisfiable by sebastian/environment[2.0.0]. 
    - sebastian/environment 2.0.0 requires php ^5.6 || ^7.0 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 24 
    - Installation request for sebastian/object-enumerator 2.0.0 -> satisfiable by sebastian/object-enumerator[2.0.0]. 
    - sebastian/object-enumerator 2.0.0 requires php >=5.6 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 25 
    - Installation request for sebastian/resource-operations 1.0.0 -> satisfiable by sebastian/resource-operations[1.0.0]. 
    - sebastian/resource-operations 1.0.0 requires php >=5.6.0 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 26 
    - Installation request for sebastian/version 2.0.1 -> satisfiable by sebastian/version[2.0.1]. 
    - sebastian/version 2.0.1 requires php >=5.6 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 27 
    - Installation request for symfony/css-selector v3.1.8 -> satisfiable by symfony/css-selector[v3.1.8]. 
    - symfony/css-selector v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 28 
    - Installation request for symfony/dom-crawler v3.1.8 -> satisfiable by symfony/dom-crawler[v3.1.8]. 
    - symfony/dom-crawler v3.1.8 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 29 
    - Installation request for symfony/yaml v3.2.1 -> satisfiable by symfony/yaml[v3.2.1]. 
    - symfony/yaml v3.2.1 requires php >=5.5.9 -> your PHP version (5.4.24) does not satisfy that requirement. 
    Problem 30 
    - nikic/php-parser v3.0.2 requires php >=5.5 -> your PHP version (5.4.24) does not satisfy that requirement. 
    - psy/psysh v0.8.0 requires nikic/php-parser ~1.3|~2.0|~3.0 -> satisfiable by nikic/php-parser[v3.0.2]. 
    - Installation request for psy/psysh v0.8.0 -> satisfiable by psy/psysh[v0.8.0]. 

Application ready! Build something amazing. 

C:\xampp>

來源

2016-12-30 Mr. Programmer

檢查您的PHP版本 –

我已經使用「echo phpversion（）」檢查了它，並且它顯示了7.0.13 –