diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c
index 1db33e5b18225..e955eed0928c8 100644
--- a/ext/pgsql/pgsql.c
+++ b/ext/pgsql/pgsql.c
@@ -984,12 +984,15 @@ PHP_FUNCTION(pg_query)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 2) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Os", &pgsql_link, pgsql_link_ce, &query, &query_len) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(1, 2);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
@@ -1078,12 +1081,15 @@ PHP_FUNCTION(pg_query_params)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 3) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Osa", &pgsql_link, pgsql_link_ce, &query, &query_len, &pv_param_arr) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(2, 3);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
@@ -1183,12 +1189,15 @@ PHP_FUNCTION(pg_prepare)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 3) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Oss", &pgsql_link, pgsql_link_ce, &stmtname, &stmtname_len, &query, &query_len) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(2, 3);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
@@ -1264,12 +1273,15 @@ PHP_FUNCTION(pg_execute)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 3) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Osa", &pgsql_link, pgsql_link_ce, &stmtname, &stmtname_len, &pv_param_arr) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(2, 3);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
@@ -2024,7 +2036,7 @@ static void php_pgsql_data_info(INTERNAL_FUNCTION_PARAMETERS, int entry_type, bo
 			Z_PARAM_OBJECT_OF_CLASS(result, pgsql_result_ce)
 			Z_PARAM_STR_OR_LONG(field_name, field_offset)
 		ZEND_PARSE_PARAMETERS_END();
-	} else {
+	} else if (ZEND_NUM_ARGS() == 3) {
 		ZEND_PARSE_PARAMETERS_START(3, 3)
 			Z_PARAM_OBJECT_OF_CLASS(result, pgsql_result_ce)
 			if (nullable_row) {
@@ -2034,6 +2046,9 @@ static void php_pgsql_data_info(INTERNAL_FUNCTION_PARAMETERS, int entry_type, bo
 			}
 			Z_PARAM_STR_OR_LONG(field_name, field_offset)
 		ZEND_PARSE_PARAMETERS_END();
+	} else {
+		zend_wrong_parameters_count_error(2, 3);
+		RETURN_THROWS();
 	}
 
 	pg_result = Z_PGSQL_RESULT_P(result);
@@ -2849,12 +2864,15 @@ PHP_FUNCTION(pg_set_error_verbosity)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 2) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ol", &pgsql_link, pgsql_link_ce, &verbosity) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(1, 2);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
@@ -2907,12 +2925,15 @@ PHP_FUNCTION(pg_set_client_encoding)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 2) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Os", &pgsql_link, pgsql_link_ce, &encoding, &encoding_len) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(1, 2);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
@@ -2996,12 +3017,15 @@ PHP_FUNCTION(pg_put_line)
 		}
 		link = FETCH_DEFAULT_LINK();
 		CHECK_DEFAULT_LINK(link);
-	} else {
+	} else if (ZEND_NUM_ARGS() == 2) {
 		if (zend_parse_parameters(ZEND_NUM_ARGS(), "Os", &pgsql_link, pgsql_link_ce, &query, &query_len) == FAILURE) {
 			RETURN_THROWS();
 		}
 		link = Z_PGSQL_LINK_P(pgsql_link);
 		CHECK_PGSQL_LINK(link);
+	} else {
+		zend_wrong_parameters_count_error(1, 2);
+		RETURN_THROWS();
 	}
 
 	pgsql = link->conn;
diff --git a/ext/pgsql/tests/gh17165.phpt b/ext/pgsql/tests/gh17165.phpt
new file mode 100644
index 0000000000000..2fe3f2ad18add
--- /dev/null
+++ b/ext/pgsql/tests/gh17165.phpt
@@ -0,0 +1,65 @@
+--TEST--
+Fix pg_query()/pg_query_params()/pg_prepare()/pg_execute()/pg_set_error_verbosity()/pg_set_client_encoding()/pg_put_line() pg field infos calls ArgumentCountError message.
+--EXTENSIONS--
+pgsql
+--SKIPIF--
+<?php
+include("skipif.inc");
+?>
+--FILE--
+<?php
+
+
+include "config.inc";
+
+$db = pg_connect($conn_str);
+try {
+    pg_query("a", "b", "c");
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+
+try {
+    pg_query_params($db, "b", array(), "d");
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+
+try {
+    pg_prepare($db, "a", "b", "c");
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+
+try {
+    pg_set_error_verbosity($db, 0, PHP_INT_MAX);
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+
+try {
+    pg_set_client_encoding($db, "foo", "bar");
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+
+try {
+    pg_put_line($db, "my", "data");
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+
+try {
+    pg_field_is_null($db, false, "myfield", new stdClass());
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), PHP_EOL;
+}
+?>
+--EXPECT--
+pg_query() expects at most 2 arguments, 3 given
+pg_query_params() expects at most 3 arguments, 4 given
+pg_prepare() expects at most 3 arguments, 4 given
+pg_set_error_verbosity() expects at most 2 arguments, 3 given
+pg_set_client_encoding() expects at most 2 arguments, 3 given
+pg_put_line() expects at most 2 arguments, 3 given
+pg_field_is_null() expects at most 3 arguments, 4 given