having troubles installing laravel collective

after running composer require "laravelcollective/html":"^5.2.0" in my vs code git bash it gives me the following error $ composer require "laravelcollective/html":"^5.2.0" which: no php in (/mingw64/bin:/usr/bin:/c/Users/matildah mariwa/bin:/c/ProgramData/Oracle/Java/javapath:/c/Windows/system32:/c/Windows:/c/Windows/System32/Wbem:/c/Windows/System32/WindowsPowerShell/v1.0:/c/Windows/System32/OpenSSH:/cmd:/c/composer:/c/wamp64/bin/php/php7.2.10/php.exe:/c/Program Files/nodejs:/c/Users/matildah mariwa/AppData/Local/Programs/Python/Python37/Scripts:/c/Users/matildah mariwa/AppData/Local/Programs/Python/Python37:/c/Users/matildah mariwa/AppData/Local/Microsoft/WindowsApps:/c/Users/matildah mariwa/AppData/Roaming/Composer/vendor/bin:/c/wamp64/bin/php/php5.6.38:/c/Users/matildah mariwa/AppData/Local/Programs/Microsoft VS Code/bin:/c/Users/matildah mariwa/AppData/Roaming/npm) /c/composer/composer: line 10: php: command not found

via Chebli Mohamed