Fix connection reuse

Author: nikic

ext/pgsql/pgsql.c

@@ -731,7 +731,7 @@ static void php_pgsql_do_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
 		 * and add a pointer to it with hashed_details as the key.
 		 */
 		if (!(connect_type & PGSQL_CONNECT_FORCE_NEW)
-			&& (index_ptr = zend_hash_find_ptr(&PGG(connections), str.s)) != NULL) {
+			&& (index_ptr = zend_hash_find(&PGG(connections), str.s)) != NULL) {
 			php_pgsql_set_default_link(Z_OBJ_P(index_ptr));
 			ZVAL_COPY(return_value, index_ptr);
 

ext/pgsql/tests/connection_reuse.phpt

@@ -0,0 +1,17 @@
+--TEST--
+Reusing connection with same connection string
+--SKIPIF--
+<?php include("skipif.inc"); ?>
+--FILE--
+<?php
+include('config.inc');
+
+$db1 = pg_connect($conn_str);
+$db2 = pg_connect($conn_str);
+var_dump($db1, $db2);
+?>
+--EXPECT--
+object(PgSql\Connection)#1 (0) {
+}
+object(PgSql\Connection)#1 (0) {
+}