Issue #3319435 by mcdruid, poker10: Update system requirements (including INSTALL.txt) for D7

INSTALL.sqlite.txt

@@ -3,7 +3,7 @@ SQLITE REQUIREMENTS
 -------------------
 
 To use SQLite with your Drupal installation, the following requirements must be
-met: Server has PHP 5.2 or later with PDO, and the PDO SQLite driver must be
+met: Server has PHP 5.3 or later with PDO, and the PDO SQLite driver must be
 enabled.
 
 SQLITE DATABASE CREATION

INSTALL.txt

@@ -15,19 +15,20 @@ REQUIREMENTS AND NOTES
 Drupal requires:
 
 - A web server. Apache (version 2.0 or greater) is recommended.
-- PHP 5.2.4 (or greater) (http://www.php.net/).
+- PHP 5.3.3 (at least, PHP 7.x or greater recommended) (https://www.php.net/).
 - One of the following databases:
-  - MySQL 5.0.15 (or greater) (http://www.mysql.com/).
-  - MariaDB 5.1.44 (or greater) (http://mariadb.org/). MariaDB is a fully
-    compatible drop-in replacement for MySQL.
-  - Percona Server 5.1.70 (or greater) (http://www.percona.com/). Percona
-    Server is a backwards-compatible replacement for MySQL.
-  - PostgreSQL 8.3 (or greater) (http://www.postgresql.org/).
-  - SQLite 3.3.7 (or greater) (http://www.sqlite.org/).
+  - MySQL 5.5 (or greater) (https://www.mysql.com/) or equivalent versions of a
+    compatible database such as MariaDB or Percona.
+  - PostgreSQL 9.5 (or greater) (https://www.postgresql.org/).
+  - SQLite 3.27 (or greater) (https://www.sqlite.org/).
 
-For more detailed information about Drupal requirements, including a list of
-PHP extensions and configurations that are required, see "System requirements"
-(http://drupal.org/requirements) in the Drupal.org online documentation.
+Note that version numbers above represent the minimum versions that Drupal 7 is
+routinely tested with. For more detailed information about compatibility with
+newer versions (that benefit from support from their maintainers), and
+requirements including a list of PHP extensions and configurations that are
+required, see "System requirements"
+(https://www.drupal.org/docs/7/system-requirements) in the Drupal.org online
+documentation.
 
 For detailed information on how to configure a test server environment using a
 variety of operating systems and web servers, see "Local server setup"

includes/bootstrap.inc

@@ -18,7 +18,7 @@ define('DRUPAL_CORE_COMPATIBILITY', '7.x');
 /**
  * Minimum supported version of PHP.
  */
-define('DRUPAL_MINIMUM_PHP', '5.2.4');
+define('DRUPAL_MINIMUM_PHP', '5.3.3');
 
 /**
  * Minimum recommended value of PHP memory_limit.

install.php

@@ -16,8 +16,8 @@ define('DRUPAL_ROOT', getcwd());
 define('MAINTENANCE_MODE', 'install');
 
 // Exit early if running an incompatible PHP version to avoid fatal errors.
-if (version_compare(PHP_VERSION, '5.2.4') < 0) {
-  print 'Your PHP installation is too old. Drupal requires at least PHP 5.2.4. See the <a href="http://drupal.org/requirements">system requirements</a> page for more information.';
+if (version_compare(PHP_VERSION, '5.3.3') < 0) {
+  print 'Your PHP installation is too old. Drupal requires at least PHP 5.3.3. See the <a href="https://www.drupal.org/docs/7/system-requirements">system requirements</a> page for more information.';
   exit;
 }