install composer error:
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The PHP exe file you specified did not run correctly:
D:phpStudyphpphp-5.6.27-ntsphp.exe
The php.ini used by your command-line PHP is: D:phpStudyphpphp-5.6.27-ntsphp.ini
A duplicate setting in your php.ini could be causing the problem.
Program Output:
Warning: Module 'fileinfo' already loaded in Unknown on line 0
解决：
检查：php.ini;
extension=php_fileinfo.dll 加载两次；