Drop deprecated ExtLibeventLoop and ExtLibevLoop (PHP 5 only)

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
 
   PHPUnit-Unstable:
     name: PHPUnit (Unstable PHP ${{ matrix.php }})
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     continue-on-error: true
     strategy:
       matrix:
@@ -57,10 +57,6 @@ jobs:
           - 7.2
           - 7.1
           - 7.0
-          - 5.6
-          - 5.5
-          - 5.4
-          - 5.3
     steps:
       - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
@@ -74,30 +70,6 @@ jobs:
           sudo apt-get update -q && sudo apt-get install libuv1-dev
           echo "yes" | sudo pecl install ${{ matrix.php >= 8.0 && 'uv-0.3.0' || 'uv-0.2.4' }}
           php -m | grep -q uv || echo "extension=uv.so" >> "$(php -r 'echo php_ini_loaded_file();')"
-        if: ${{ matrix.php >= 7.0 }}
-      - name: Install legacy ext-libevent on PHP < 7.0
-        run: |
-          sudo apt-get update && sudo apt-get install libevent-dev
-          curl http://pecl.php.net/get/libevent-0.1.0.tgz | tar -xz
-          pushd libevent-0.1.0
-          phpize
-          ./configure
-          make
-          sudo make install
-          popd
-          echo "extension=libevent.so" | sudo tee -a "$(php -r 'echo php_ini_loaded_file();')"
-        if: ${{ matrix.php < 7.0 }}
-      - name: Install legacy ext-libev on PHP < 7.0
-        run: |
-          git clone --recursive https://github.com/m4rw3r/php-libev
-          pushd php-libev
-          phpize
-          ./configure --with-libev
-          make
-          sudo make install
-          popd
-          echo "extension=libev.so" | sudo tee -a "$(php -r 'echo php_ini_loaded_file();')"
-        if: ${{ matrix.php < 7.0 }}
       - run: composer install
       - run: vendor/bin/phpunit --coverage-text
         if: ${{ matrix.php >= 7.3 }}

README.md

@@ -33,8 +33,6 @@ single [`run()`](#run) call that is controlled by the user.
         * [ExtEventLoop](#exteventloop)
         * [ExtEvLoop](#extevloop)
         * [ExtUvLoop](#extuvloop)
-        * [~~ExtLibeventLoop~~](#extlibeventloop)
-        * [~~ExtLibevLoop~~](#extlibevloop)
     * [LoopInterface](#loopinterface)
         * [run()](#run)
         * [stop()](#stop)
@@ -429,46 +427,6 @@ that provides an interface to `libuv` library.
 
 This loop is known to work with PHP 7+.
 
-#### ~~ExtLibeventLoop~~
-
-> Deprecated since v1.2.0, use [`ExtEventLoop`](#exteventloop) instead.
-
-An `ext-libevent` based event loop.
-
-This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent),
-that provides an interface to `libevent` library.
-`libevent` itself supports a number of system-specific backends (epoll, kqueue).
-
-This event loop does only work with PHP 5.
-An [unofficial update](https://github.com/php/pecl-event-libevent/pull/2) for
-PHP 7 does exist, but it is known to cause regular crashes due to `SEGFAULT`s.
-To reiterate: Using this event loop on PHP 7 is not recommended.
-Accordingly, neither the [`Loop` class](#loop) nor the deprecated
-[`Factory` class](#factory) will try to use this event loop on PHP 7.
-
-This event loop is known to trigger a readable listener only if
-the stream *becomes* readable (edge-triggered) and may not trigger if the
-stream has already been readable from the beginning.
-This also implies that a stream may not be recognized as readable when data
-is still left in PHP's internal stream buffers.
-As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
-to disable PHP's internal read buffer in this case.
-See also [`addReadStream()`](#addreadstream) for more details.
-
-#### ~~ExtLibevLoop~~
-
-> Deprecated since v1.2.0, use [`ExtEvLoop`](#extevloop) instead.
-
-An `ext-libev` based event loop.
-
-This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev),
-that provides an interface to `libev` library.
-`libev` itself supports a number of system-specific backends (epoll, kqueue).
-
-This loop does only work with PHP 5.
-An update for PHP 7 is [unlikely](https://github.com/m4rw3r/php-libev/issues/8)
-to happen any time soon.
-
 ### LoopInterface
 
 #### run()

src/Factory.php

@@ -52,10 +52,6 @@ private static function construct()
             return new ExtUvLoop();
         }
 
-        if (\class_exists('libev\EventLoop', false)) {
-            return new ExtLibevLoop();
-        }
-
         if (\class_exists('EvLoop', false)) {
             return new ExtEvLoop();
         }
@@ -64,11 +60,6 @@ private static function construct()
             return new ExtEventLoop();
         }
 
-        if (\function_exists('event_base_new') && \PHP_MAJOR_VERSION === 5) {
-            // only use ext-libevent on PHP 5 for now
-            return new ExtLibeventLoop();
-        }
-
         return new StreamSelectLoop();
         // @codeCoverageIgnoreEnd
     }

src/StreamSelectLoop.php

@@ -15,9 +15,8 @@
  * This event loop works out of the box on PHP 5.4 through PHP 8+ and HHVM.
  * This means that no installation is required and this library works on all
  * platforms and supported PHP versions.
- * Accordingly, the [`Loop` class](#loop) and the deprecated [`Factory`](#factory)
- * will use this event loop by default if you do not install any of the event loop
- * extensions listed below.
+ * Accordingly, the [`Loop` class](#loop) will use this event loop by default if
+ * you do not install any of the event loop extensions listed below.
  *
  * Under the hood, it does a simple `select` system call.
  * This system call is limited to the maximum file descriptor number of