license-update: README and CONTRIBUTING docs

RFC: https://wiki.php.net/rfc/php_license_update

Author: ramsey

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -31,9 +31,9 @@ body:
         Please make sure that the used PHP version [is a supported version](https://www.php.net/supported-versions.php).
       placeholder: |
         PHP 8.3.19 (cli) (built: Mar 13 2025 17:44:40) (NTS)
-        Copyright (c) The PHP Group
-        Zend Engine v4.3.19, Copyright (c) Zend Technologies
-            with Zend OPcache v8.3.19, Copyright (c), by Zend Technologies
+        Copyright © The PHP Group and Contributors
+        Zend Engine v4.3.19, Copyright © Zend by Perforce
+            with Zend OPcache v8.3.19, Copyright ©, Zend by Perforce
       render: plain
     validations:
       required: true

CONTRIBUTING.md

@@ -36,8 +36,8 @@ implement RFCs. Please be sure to include tests as appropriate!
 By submitting a pull request, you certify that you have the necessary rights
 to submit the work, that the work does not violate any third-party rights
 (including those of your employer, if applicable), and that you license your
-contribution under the PHP License or under another license if explicitly
-accepted by the PHP project maintainers.
+contribution under the [Modified BSD License](LICENSE) or under another license
+if explicitly accepted by the PHP project maintainers.
 
 If you are fixing a bug, then please submit your PR against the lowest actively
 supported branch of PHP that the bug affects (only green branches on
@@ -437,15 +437,13 @@ New source code files should include the following header block:
 ```c
 /*
   +----------------------------------------------------------------------+
-  | Copyright (c) The PHP Group                                          |
+  | Copyright © The PHP Group and Contributors.                          |
   +----------------------------------------------------------------------+
-  | This source file is subject to version 3.01 of the PHP license,      |
-  | that is bundled with this package in the file LICENSE, and is        |
-  | available through the world-wide-web at the following url:           |
-  | https://www.php.net/license/3_01.txt                                 |
-  | If you did not receive a copy of the PHP license and are unable to   |
-  | obtain it through the world-wide-web, please send a note to          |
-  | license@php.net so we can mail you a copy immediately.               |
+  | This source file is subject to the Modified BSD License that is      |
+  | bundled with this package in the file LICENSE, and is available      |
+  | through the World Wide Web at <https://www.php.net/license/>.        |
+  |                                                                      |
+  | SPDX-License-Identifier: BSD-3-Clause                                |
   +----------------------------------------------------------------------+
   | Author:                                                              |
   +----------------------------------------------------------------------+

README.md

@@ -11,8 +11,10 @@
 
 PHP is a popular general-purpose scripting language that is especially suited to
 web development. Fast, flexible and pragmatic, PHP powers everything from your
-blog to the most popular websites in the world. PHP is distributed under the
-[PHP License v3.01](LICENSE).
+blog to the most popular websites in the world.
+
+PHP is distributed under the [Modified BSD License](LICENSE)
+(SPDX-License-Identifier: `BSD-3-Clause`).
 
 [![Push](https://github.com/php/php-src/actions/workflows/push.yml/badge.svg)](https://github.com/php/php-src/actions/workflows/push.yml)
 [![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/php.svg)](https://issues.oss-fuzz.com/issues?q=project:php)