Check if PHP_BINARY is available

Author: johnstevenson

src/XdebugHandler.php

@@ -590,6 +590,11 @@ private function checkConfiguration(?string &$info): bool
             return false;
         }
 
+        if (!file_exists(PHP_BINARY)) {
+            $info = 'PHP_BINARY is not available';
+            return false;
+        }
+
         if (extension_loaded('uopz') && !((bool) ini_get('uopz.disable'))) {
             // uopz works at opcode level and disables exit calls
             if (function_exists('uopz_allow_exit')) {