rector: FuncCallToConstFetchRector (#4871)

- see https://getrector.com/rule-detail/func-call-to-const-fetch-rector

Author: sreichel

.rector.php

@@ -136,7 +136,6 @@
             Php81\Array_\FirstClassCallableRector::class, # todo: TMP
             Php81\FuncCall\NullToStrictStringFuncCallArgRector::class, # todo: check later
             Strict\Empty_\DisallowedEmptyRuleFixerRector::class, # todo: TMP
-            Transform\FuncCall\FuncCallToConstFetchRector::class, # todo: TMP
             TypeDeclaration\BooleanAnd\BinaryOpNullableToInstanceofRector::class, # todo: TMP
             TypeDeclaration\ClassMethod\ReturnNeverTypeRector::class,
             TypeDeclaration\Empty_\EmptyOnNullableObjectToInstanceOfRector::class, # todo: TMP

app/code/core/Mage/Core/Controller/Response/Http.php

@@ -32,7 +32,7 @@ public function sendHeaders()
             return $this;
         }
 
-        if (str_starts_with(php_sapi_name(), 'cgi')) {
+        if (str_starts_with(PHP_SAPI, 'cgi')) {
             $statusSent = false;
             foreach ($this->_headersRaw as $i => $header) {
                 if (stripos($header, 'status:') === 0) {

app/code/core/Mage/Core/Model/App.php

@@ -350,7 +350,7 @@ public function run($params)
         }
 
         // Finish the request explicitly, no output allowed beyond this point
-        if (php_sapi_name() == 'fpm-fcgi' && function_exists('fastcgi_finish_request')) {
+        if (PHP_SAPI == 'fpm-fcgi' && function_exists('fastcgi_finish_request')) {
             fastcgi_finish_request();
         } else {
             flush();