composrソフトウェアのインストールに失敗した解決方法

PHP Warning:  putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 149

Warning: putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 149
PHP Warning:  putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/bin/composer on line 57

Warning: putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/bin/composer on line 57
PHP Warning:  putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 149

Warning: putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 149 PHP Warning: putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/bin/composer on line 57
Warning: putenv() has been disabled for security reasons in phar:///usr/local/bin/composer/bin/composer on line 57
の原因となる
この問題の原因は主にphpが安全問題のためにputenv()という関数を禁止することである.
解決策
phpのプロファイルを変更します.php.ini disableを見つけたfunctionというところは、putenvを外せばいいです.