@@ -33,7 +33,6 @@ permissions: {}
 env:
   PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}
   LOCAL_PHP_MEMCACHED: ${{ false }}
-  SLOW_TESTS: 'external-http,media,restapi'
 
 jobs:
   # Runs the PHPUnit tests for WordPress.
@@ -56,7 +55,7 @@ jobs:
   # - Checks out the WordPress Test reporter repository.
   # - Submit the test results to the WordPress.org host test results.
   test-php:
-    name: ${{ matrix.php }}${{ matrix.multisite && ' multisite' || '' }}${{ matrix.split_slow && ' slow tests' || '' }}${{ matrix.memcached && ' with memcached' || '' }} on ${{ matrix.os }}
+    name: ${{ matrix.php }}${{ matrix.multisite && ' multisite' || '' }}${{ matrix.memcached && ' with memcached' || '' }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     permissions:
       contents: read
@@ -65,23 +64,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [ '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2' ]
         os: [ ubuntu-latest ]
         memcached: [ false ]
-        split_slow: [ false ]
         multisite: [ false, true ]
         include:
-          # Additional "slow" jobs for PHP 5.6.
-          - php: '5.6'
-            os: ubuntu-latest
-            memcached: false
-            multisite: false
-            split_slow: true
-          - php: '5.6'
-            os: ubuntu-latest
-            memcached: false
-            multisite: true
-            split_slow: true
           # Include jobs for PHP 7.4 with memcached.
           - php: '7.4'
             os: ubuntu-latest
@@ -174,37 +161,22 @@ jobs:
       - name: Install WordPress
         run: npm run env:install
 
-      - name: Run slow PHPUnit tests
-        if: ${{ matrix.split_slow }}
-        run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c ${{ env.PHPUNIT_CONFIG }} --group ${{ env.SLOW_TESTS }}
-
-      - name: Run PHPUnit tests for single site excluding slow tests
-        if: ${{ matrix.php < '7.0' && ! matrix.split_slow && ! matrix.multisite }}
-        run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c ${{ env.PHPUNIT_CONFIG }} --exclude-group ${{ env.SLOW_TESTS }},ajax,ms-files,ms-required
-
-      - name: Run PHPUnit tests for Multisite excluding slow tests
-        if: ${{ matrix.php < '7.0' && ! matrix.split_slow && matrix.multisite }}
-        run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c ${{ env.PHPUNIT_CONFIG }} --exclude-group ${{ env.SLOW_TESTS }},ajax,ms-files,ms-excluded,oembed-headers
-
       - name: Run PHPUnit tests
-        if: ${{ matrix.php >= '7.0' }}
         run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c ${{ env.PHPUNIT_CONFIG }}
 
       - name: Run AJAX tests
-        if: ${{ ! matrix.split_slow }}
         run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c ${{ env.PHPUNIT_CONFIG }} --group ajax
 
       - name: Run ms-files tests as a multisite install
-        if: ${{ matrix.multisite && ! matrix.split_slow }}
+        if: ${{ matrix.multisite }}
         run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c tests/phpunit/multisite.xml --group ms-files
 
       - name: Run external HTTP tests
-        if: ${{ ! matrix.multisite && ! matrix.split_slow }}
+        if: ${{ ! matrix.multisite }}
         run: node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit --verbose -c phpunit.xml.dist --group external-http
 
       # __fakegroup__ is excluded to force PHPUnit to ignore the <exclude> settings in phpunit.xml.dist.
       - name: Run (Xdebug) tests
-        if: ${{ ! matrix.split_slow }}
         run: LOCAL_PHP_XDEBUG=true node ./tools/local-env/scripts/docker.js run php ./vendor/bin/phpunit -v --group xdebug --exclude-group __fakegroup__
 
       - name: Ensure version-controlled files are not modified or deleted
 
@@ -10,7 +10,7 @@
 		"issues": "https://core.trac.wordpress.org/"
 	},
 	"require": {
-		"php": ">=5.6"
+		"php": ">=7.0"
 	},
 	"require-dev": {
 		"dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
 
@@ -4,8 +4,8 @@
 
 	<rule ref="PHPCompatibilityWP"/>
 
-	<!-- WordPress Core currently supports PHP 5.6+. -->
-	<config name="testVersion" value="5.6-"/>
+	<!-- WordPress Core currently supports PHP 7.0+. -->
+	<config name="testVersion" value="7.0-"/>
 
 	<!-- Only scan PHP files. -->
 	<arg name="extensions" value="php"/>
 
@@ -51,7 +51,7 @@ <h2>Migrating from other systems</h2>
 
 <h2>System Requirements</h2>
 <ul>
-	<li><a href="https://secure.php.net/">PHP</a> version <strong>5.6.20</strong> or greater.</li>
+	<li><a href="https://secure.php.net/">PHP</a> version <strong>7.0</strong> or greater.</li>
 	<li><a href="https://www.mysql.com/">MySQL</a> version <strong>5.0</strong> or greater.</li>
 </ul>
 
 
@@ -333,10 +333,6 @@ function hash_equals( $known_string, $user_string ) {
 	}
 endif;
 
-// random_int() was introduced in PHP 7.0.
-if ( ! function_exists( 'random_int' ) ) {
-	require ABSPATH . WPINC . '/random_compat/random.php';
-}
 // sodium_crypto_box() was introduced in PHP 7.2.
 if ( ! function_exists( 'sodium_crypto_box' ) ) {
 	require ABSPATH . WPINC . '/sodium_compat/autoload.php';