Merge branch '11.5'

Author: sebastianbergmann

src/Framework/TestRunner/SeparateProcessTestRunner.php

@@ -11,10 +11,10 @@
 
 use function assert;
 use function defined;
-use function file_exists;
 use function file_get_contents;
 use function get_include_path;
 use function hrtime;
+use function is_file;
 use function restore_error_handler;
 use function serialize;
 use function set_error_handler;
@@ -172,7 +172,7 @@ private function runTestJob(string $code, Test $test, string $processResultFile)
 
         $processResult = '';
 
-        if (file_exists($processResultFile)) {
+        if (is_file($processResultFile)) {
             $processResult = file_get_contents($processResultFile);
 
             assert($processResult !== false);

src/TextUI/Command/Commands/GenerateConfigurationCommand.php

@@ -14,9 +14,9 @@
 use function assert;
 use function defined;
 use function fgets;
-use function file_exists;
 use function file_put_contents;
 use function getcwd;
+use function is_file;
 use function sprintf;
 use function trim;
 use PHPUnit\Runner\Version;
@@ -67,7 +67,7 @@ public function execute(): Result
         }
 
         if (defined('PHPUNIT_COMPOSER_INSTALL') &&
-            file_exists($directory . '/vendor/phpunit/phpunit/phpunit.xsd')) {
+            is_file($directory . '/vendor/phpunit/phpunit/phpunit.xsd')) {
             $schemaLocation = 'vendor/phpunit/phpunit/phpunit.xsd';
         } else {
             $schemaLocation = sprintf(