drop php 5.6 and 7.0

README.md

@@ -8,7 +8,7 @@ Download the latest release from our [website](http://www.espocrm.com).
 
 ### Requirements
 
-* PHP 5.6 or above (with pdo, json, gd, openssl, zip, imap, mbstring, curl extensions);
+* PHP 7.1 or above (with pdo, json, gd, openssl, zip, imap, mbstring, curl extensions);
 * MySQL 5.5.3 or above, or MariaDB.
 
 For more information about server configuration see [this article](https://www.espocrm.com/documentation/administration/server-configuration/).
@@ -76,4 +76,3 @@ Json files will be created in build directory grouped by folders.
 ### License
 
 EspoCRM is published under the GNU GPLv3 [license](https://raw.githubusercontent.com/espocrm/espocrm/master/LICENSE.txt).
-

application/Espo/Core/defaults/systemConfig.php

@@ -211,7 +211,7 @@ return [
     'ldapUserEmailAddressAttribute' => 'mail',
     'ldapUserPhoneNumberAttribute' => 'telephoneNumber',
     'ldapUserObjectClass' => 'person',
-    'requiredPhpVersion' => '5.6.0',
+    'requiredPhpVersion' => '7.1.0',
     'requiredPhpLibs' => [
         'json',
         'openssl',