diff --git a/ext/pgsql/config.m4 b/ext/pgsql/config.m4
index 48fbbae34ace0..1409f879b52cc 100644
--- a/ext/pgsql/config.m4
+++ b/ext/pgsql/config.m4
@@ -31,6 +31,9 @@ if test "$PHP_PGSQL" != "no"; then
   PHP_CHECK_LIBRARY([pq], [PQclosePrepared],
     [AC_DEFINE([HAVE_PG_CLOSE_STMT], [1], [PostgreSQL 17 or later])],,
     [$PGSQL_LIBS])
+  PHP_CHECK_LIBRARY([pq], [PQservice],
+    [AC_DEFINE([HAVE_PG_SERVICE], [1], [PostgreSQL 18 or later])],,
+    [$PGSQL_LIBS])
 
   old_CFLAGS=$CFLAGS
   CFLAGS="$CFLAGS $PGSQL_CFLAGS"
diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c
index 3f16c2e88f2fa..c53bf8ed9a35c 100644
--- a/ext/pgsql/pgsql.c
+++ b/ext/pgsql/pgsql.c
@@ -907,6 +907,7 @@ PHP_FUNCTION(pg_close)
 #define PHP_PG_HOST 6
 #define PHP_PG_VERSION 7
 #define PHP_PG_JIT 8
+#define PHP_PG_SERVICE 9
 
 /* php_pgsql_get_link_info */
 static void php_pgsql_get_link_info(INTERNAL_FUNCTION_PARAMETERS, int entry_type)
@@ -991,6 +992,12 @@ static void php_pgsql_get_link_info(INTERNAL_FUNCTION_PARAMETERS, int entry_type
 			PQclear(res);
 			return;
 		}
+#if defined(HAVE_PG_SERVICE)
+		case PHP_PG_SERVICE: {
+			result = PQservice(pgsql);
+			break;
+		}
+#endif
 		EMPTY_SWITCH_DEFAULT_CASE()
 	}
 	if (result) {
@@ -1047,6 +1054,13 @@ PHP_FUNCTION(pg_jit)
 	php_pgsql_get_link_info(INTERNAL_FUNCTION_PARAM_PASSTHRU,PHP_PG_JIT);
 }
 
+#if defined(HAVE_PG_SERVICE)
+PHP_FUNCTION(pg_service)
+{
+	php_pgsql_get_link_info(INTERNAL_FUNCTION_PARAM_PASSTHRU,PHP_PG_SERVICE);
+}
+#endif
+
 /* Returns the value of a server parameter */
 PHP_FUNCTION(pg_parameter_status)
 {
diff --git a/ext/pgsql/pgsql.stub.php b/ext/pgsql/pgsql.stub.php
index cac22e3a30301..04e648eff8d50 100644
--- a/ext/pgsql/pgsql.stub.php
+++ b/ext/pgsql/pgsql.stub.php
@@ -508,6 +508,9 @@ function pg_version(?PgSql\Connection $connection = null): array {}
      */
     function pg_jit(?PgSql\Connection $connection = null): array {}
 
+#ifdef HAVE_PG_SERVICE
+    function pg_service(?PgSql\Connection $connection = null): string {}
+#endif
     /**
      * @param PgSql\Connection|string $connection
      * @refcount 1
diff --git a/ext/pgsql/pgsql_arginfo.h b/ext/pgsql/pgsql_arginfo.h
index 336dd7ff86d04..cb58645e5e9f5 100644
--- a/ext/pgsql/pgsql_arginfo.h
+++ b/ext/pgsql/pgsql_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 49e3493be11a5da1ed9a57339f14f92f34bf5d1b */
+ * Stub hash: 3cf44ca06d11cad086829d3d04900ade3cacb88b */
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_TYPE_MASK_EX(arginfo_pg_connect, 0, 1, PgSql\\Connection, MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, connection_string, IS_STRING, 0)
@@ -38,6 +38,12 @@ ZEND_END_ARG_INFO()
 
 #define arginfo_pg_jit arginfo_pg_version
 
+#if defined(HAVE_PG_SERVICE)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_pg_service, 0, 0, IS_STRING, 0)
+	ZEND_ARG_OBJ_INFO_WITH_DEFAULT_VALUE(0, connection, PgSql\\Connection, 1, "null")
+ZEND_END_ARG_INFO()
+#endif
+
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_pg_parameter_status, 0, 1, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_INFO(0, connection)
 	ZEND_ARG_TYPE_INFO(0, name, IS_STRING, 0)
@@ -514,6 +520,9 @@ ZEND_FUNCTION(pg_tty);
 ZEND_FUNCTION(pg_host);
 ZEND_FUNCTION(pg_version);
 ZEND_FUNCTION(pg_jit);
+#if defined(HAVE_PG_SERVICE)
+ZEND_FUNCTION(pg_service);
+#endif
 ZEND_FUNCTION(pg_parameter_status);
 ZEND_FUNCTION(pg_ping);
 ZEND_FUNCTION(pg_query);
@@ -623,6 +632,9 @@ static const zend_function_entry ext_functions[] = {
 	ZEND_FE(pg_host, arginfo_pg_host)
 	ZEND_FE(pg_version, arginfo_pg_version)
 	ZEND_FE(pg_jit, arginfo_pg_jit)
+#if defined(HAVE_PG_SERVICE)
+	ZEND_FE(pg_service, arginfo_pg_service)
+#endif
 	ZEND_FE(pg_parameter_status, arginfo_pg_parameter_status)
 	ZEND_FE(pg_ping, arginfo_pg_ping)
 	ZEND_FE(pg_query, arginfo_pg_query)
diff --git a/ext/pgsql/tests/pg_service.phpt b/ext/pgsql/tests/pg_service.phpt
new file mode 100644
index 0000000000000..0ce1be7285ebc
--- /dev/null
+++ b/ext/pgsql/tests/pg_service.phpt
@@ -0,0 +1,19 @@
+--TEST--
+PostgreSQL connection service field support
+--EXTENSIONS--
+pgsql
+--SKIPIF--
+<?php 
+include("inc/skipif.inc"); 
+if (!function_exists("pg_service")) die("skip pg_service unsupported");
+?>
+--FILE--
+<?php
+include('inc/config.inc');
+
+$db = pg_connect($conn_str);
+var_dump(pg_service($db));
+pg_close($db);
+?>
+--EXPECTF--
+string(%d) "%A"