diff --git a/ext/soap/php_http.c b/ext/soap/php_http.c
index 5a887bd1e1e0..8b87487017e2 100644
--- a/ext/soap/php_http.c
+++ b/ext/soap/php_http.c
@@ -532,6 +532,8 @@ int make_http_soap_request(zval        *this_ptr,
 	}
 	PG(allow_url_fopen) = old_allow_url_fopen;
 
+	bool client_trace = Z_TYPE_P(Z_CLIENT_TRACE_P(this_ptr)) == IS_TRUE;
+
 	if (stream) {
 		zval *cookies, *login, *password;
 		zend_resource *ret = zend_register_resource(phpurl, le_url);
@@ -863,7 +865,7 @@ int make_http_soap_request(zval        *this_ptr,
 
 		smart_str_append_const(&soap_headers, "\r\n");
 		smart_str_0(&soap_headers);
-		if (Z_TYPE_P(Z_CLIENT_TRACE_P(this_ptr)) == IS_TRUE) {
+		if (client_trace) {
 			zval_ptr_dtor(Z_CLIENT_LAST_REQUEST_HEADERS_P(this_ptr));
 			/* Need to copy the string here, as we continue appending to soap_headers below. */
 			ZVAL_STRINGL(Z_CLIENT_LAST_REQUEST_HEADERS_P(this_ptr),
@@ -892,65 +894,78 @@ int make_http_soap_request(zval        *this_ptr,
 		return FALSE;
 	}
 
-	if (!return_value) {
-		php_stream_close(stream);
-		convert_to_null(Z_CLIENT_HTTPSOCKET_P(this_ptr));
-		convert_to_null(Z_CLIENT_USE_PROXY_P(this_ptr));
-		smart_str_free(&soap_headers_z);
-		return TRUE;
-	}
+	http_headers = NULL;
+	if (return_value || client_trace) {
+		do {
+			http_headers = get_http_headers(stream);
+			if (!http_headers) {
+				if (request != buf) {
+					zend_string_release_ex(request, 0);
+				}
+				php_stream_close(stream);
+				convert_to_null(Z_CLIENT_HTTPSOCKET_P(this_ptr));
+				convert_to_null(Z_CLIENT_USE_PROXY_P(this_ptr));
+				add_soap_fault(this_ptr, "HTTP", "Error Fetching http headers", NULL, NULL);
+				smart_str_free(&soap_headers_z);
+				return FALSE;
+			}
 
-	do {
-		http_headers = get_http_headers(stream);
-		if (!http_headers) {
-			if (request != buf) {
-				zend_string_release_ex(request, 0);
+			if (client_trace) {
+				zval_ptr_dtor(Z_CLIENT_LAST_RESPONSE_HEADERS_P(this_ptr));
+				ZVAL_STR_COPY(Z_CLIENT_LAST_RESPONSE_HEADERS_P(this_ptr), http_headers);
 			}
-			php_stream_close(stream);
-			convert_to_null(Z_CLIENT_HTTPSOCKET_P(this_ptr));
-			convert_to_null(Z_CLIENT_USE_PROXY_P(this_ptr));
-			add_soap_fault(this_ptr, "HTTP", "Error Fetching http headers", NULL, NULL);
-			smart_str_free(&soap_headers_z);
-			return FALSE;
-		}
 
-		if (Z_TYPE_P(Z_CLIENT_TRACE_P(this_ptr)) == IS_TRUE) {
-			zval_ptr_dtor(Z_CLIENT_LAST_RESPONSE_HEADERS_P(this_ptr));
-			ZVAL_STR_COPY(Z_CLIENT_LAST_RESPONSE_HEADERS_P(this_ptr), http_headers);
-		}
+			/* Check to see what HTTP status was sent */
+			http_1_1 = 0;
+			http_status = 0;
+			http_version = get_http_header_value(ZSTR_VAL(http_headers), "HTTP/");
+			if (http_version) {
+				char *tmp;
 
-		/* Check to see what HTTP status was sent */
-		http_1_1 = 0;
-		http_status = 0;
-		http_version = get_http_header_value(ZSTR_VAL(http_headers), "HTTP/");
-		if (http_version) {
-			char *tmp;
+				if (!strncmp(http_version,"1.1", 3)) {
+					http_1_1 = 1;
+				}
 
-			if (!strncmp(http_version,"1.1", 3)) {
-				http_1_1 = 1;
-			}
+				tmp = strstr(http_version," ");
+				if (tmp != NULL) {
+					tmp++;
+					http_status = atoi(tmp);
+				}
+				tmp = strstr(tmp," ");
+				if (tmp != NULL) {
+					tmp++;
+					if (http_msg) {
+						efree(http_msg);
+					}
+					http_msg = estrdup(tmp);
+				}
+				efree(http_version);
 
-			tmp = strstr(http_version," ");
-			if (tmp != NULL) {
-				tmp++;
-				http_status = atoi(tmp);
-			}
-			tmp = strstr(tmp," ");
-			if (tmp != NULL) {
-				tmp++;
-				if (http_msg) {
-					efree(http_msg);
+				/* Try and get headers again */
+				if (http_status == 100) {
+					zend_string_release_ex(http_headers, 0);
 				}
-				http_msg = estrdup(tmp);
 			}
-			efree(http_version);
+		} while (http_status == 100);
+	}
 
-			/* Try and get headers again */
-			if (http_status == 100) {
-				zend_string_release_ex(http_headers, 0);
-			}
+	if (!return_value) {
+		/* In this case, the headers were only fetched because client_trace was true. */
+		if (request != buf) {
+			zend_string_release_ex(request, 0);
+		}
+		php_stream_close(stream);
+		if (http_headers) {
+			zend_string_release_ex(http_headers, 0);
+		}
+		convert_to_null(Z_CLIENT_HTTPSOCKET_P(this_ptr));
+		convert_to_null(Z_CLIENT_USE_PROXY_P(this_ptr));
+		if (http_msg) {
+			efree(http_msg);
 		}
-	} while (http_status == 100);
+		smart_str_free(&soap_headers_z);
+		return true;
+	}
 
 	/* Grab and send back every cookie */
 
diff --git a/ext/soap/tests/bugs/bug49278.phpt b/ext/soap/tests/bugs/bug49278.phpt
new file mode 100644
index 000000000000..ddac60807a4d
--- /dev/null
+++ b/ext/soap/tests/bugs/bug49278.phpt
@@ -0,0 +1,59 @@
+--TEST--
+Bug #49278 (SoapClient::__getLastResponseHeaders returns NULL if wsdl operation !has output)
+--EXTENSIONS--
+soap
+--INI--
+soap.wsdl_cache_enabled=0
+--SKIPIF--
+<?php
+    if (!file_exists(__DIR__ . "/../../../../sapi/cli/tests/php_cli_server.inc")) {
+        echo "skip sapi/cli/tests/php_cli_server.inc required but not found";
+    }
+?>
+--FILE--
+<?php
+
+include __DIR__ . "/../../../../sapi/cli/tests/php_cli_server.inc";
+
+$args = ["-d", "extension_dir=" . ini_get("extension_dir"), "-d", "extension=" . (substr(PHP_OS, 0, 3) == "WIN" ? "php_" : "") . "soap." . PHP_SHLIB_SUFFIX];
+if (php_ini_loaded_file()) {
+  // Necessary such that it works from a development directory in which case extension_dir might not be the real extension dir
+  $args[] = "-c";
+  $args[] = php_ini_loaded_file();
+}
+$code = '$server = new SoapServer("' . __DIR__ . '"/bug49278.wsdl", ["trace"=>1]);' .
+        <<<'PHP'
+        function Add() {}
+        $server->addFunction('Add');
+        $server->handle();
+        PHP;
+
+php_cli_server_start($code, null, $args);
+
+$client = new SoapClient(__DIR__ . '/bug49278.wsdl', array('location' => "http://".PHP_CLI_SERVER_ADDRESS, 'trace' => 1));
+$client->Add();
+var_dump($client->__getLastResponse());
+var_dump($client->__getLastResponse());
+var_dump($client->__getLastRequestHeaders());
+var_dump($client->__getLastResponseHeaders());
+
+?>
+--EXPECTF--
+string(0) ""
+string(0) ""
+string(177) "POST / HTTP/1.1
+Host: %s
+Connection: Keep-Alive
+User-Agent: PHP-SOAP/8.4.0-dev
+Content-Type: text/xml; charset=utf-8
+SOAPAction: "Add"
+Content-Length: %d
+
+"
+string(165) "HTTP/1.1 200 OK
+Host: %s
+Date: %s
+Connection: close
+X-Powered-By: PHP/8.4.0-dev
+Content-type: text/html; charset=UTF-8
+"
diff --git a/ext/soap/tests/bugs/bug49278.wsdl b/ext/soap/tests/bugs/bug49278.wsdl
new file mode 100644
index 000000000000..5cbeb36c7c14
--- /dev/null
+++ b/ext/soap/tests/bugs/bug49278.wsdl
@@ -0,0 +1,46 @@
+<?xml version="1.0" ?>
+<definitions
+    xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
+    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
+    xmlns:si="http://soapinterop.org/xsd"
+    xmlns:tns="http://linuxsrv.home/~dmitry/soap/test.wsdl"
+    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
+    xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+    xmlns="http://schemas.xmlsoap.org/wsdl/"
+    targetNamespace="http://linuxsrv.home/~dmitry/soap/test.wsdl">
+
+  <types>
+    <xsd:schema targetNamespace="http://linuxsrv.home/~dmitry/soap/test.wsdl">
+      <xsd:import namespace="http://schemas.xmlsoap.org/soap/encoding/" />
+      <xsd:import namespace="http://schemas.xmlsoap.org/wsdl/" />
+    </xsd:schema>
+  </types>
+
+  <message name="AddRequest"/>
+  <message name="AddResponse"/>
+
+  <portType name="TestServicePortType">
+    <operation name="Add">
+      <input message="tns:AddRequest" />
+    </operation>
+  </portType>
+
+  <binding name="TestServiceBinding" type="tns:TestServicePortType">
+    <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" />
+    <operation name="Add">
+      <soap:operation soapAction="Add" style="rpc" />
+      <input>
+        <soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
+      </input>
+    </operation>
+  </binding>
+
+  <service name="TestService">
+    <port name="TestServicePort" binding="tns:TestServiceBinding">
+      <soap:address location="http://linuxsrv.home/~dmitry/soap/soap_server.php" />
+    </port>
+  </service>
+
+</definitions>