修改在线安装 php 版本要求

application/admin/command/Install.php

@@ -309,8 +309,8 @@ class Install extends Command
         //数据库配置文件
         $dbConfigFile = APP_PATH . 'database.php';
 
-        if (version_compare(PHP_VERSION, '7.1.0', '<')) {
-            throw new Exception(__("The current version %s is too low, please use PHP 7.1 or higher", PHP_VERSION));
+        if (version_compare(PHP_VERSION, '7.2.0', '<')) {
+            throw new Exception(__("The current version %s is too low, please use PHP 7.2 or higher", PHP_VERSION));
         }
         if (!extension_loaded("PDO")) {
             throw new Exception(__("PDO is not currently installed and cannot be installed"));