what reason? And its solution, I hope it will be helpful to friends in need!
Composer-Setup installation failure and solution
###Error occurred: #################Cause analysis: #########This is because your PHP openssl module is not turned on, so you need to modify the PHP configuration file#########Solution: #########Modify PHP Configuration file (php.ini) - What is modified is php.ini under the Apache server, such as the path: D:\wamp64\wamp\bin\php\php5.4.12\php.ini######Find php. The location of php_openssl.dll in the ini configuration file############Modification: Remove the ";" in front of the line (represents opening) ############ When finished, reinstall Composer. #########
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what reason? And its solution, I hope it will be helpful to friends in need! 
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