Change DB\IO Returning check regex

Better regex to only get last returning in query, with proper parameter
check

www/admin/class_test.db.php

@@ -161,7 +161,7 @@ print "DIRECT INSERT PREVIOUS INSERTED: "
 $db->dbPrepare("ins_test_foo", "INSERT INTO test_foo (test) VALUES ($1) RETURNING test");
 $status = $db->dbExecute("ins_test_foo", ['BAR TEST ' . time()]);
 print "PREPARE INSERT[ins_test_foo] STATUS: " . Support::printToString($status) . " |<br>"
-	. "QUERY: " . $db->dbGetQuery() . " |<br>"
+	. "QUERY: " . $db->dbGetPrepareCursorValue('ins_test_foo', 'query') . " |<br>"
 	. "PRIMARY KEY: " . $db->dbGetInsertPK() . " | "
 	. "RETURNING EXT: " . print_r($db->dbGetReturningExt(), true) . " | "
 	. "RETURNING RETURN: " . print_r($db->dbGetReturningArray(), true) . "<br>";
@@ -186,7 +186,7 @@ EOM;
 $db->dbPrepare("ins_test_foo_eom", $query);
 $status = $db->dbExecute("ins_test_foo_eom", ['EOM BAR TEST ' . time()]);
 print "EOM STRING PREPARE INSERT[ins_test_foo_eom] STATUS: " . Support::printToString($status) . " |<br>"
-	. "QUERY: " . $db->dbGetQuery() . " |<br>"
+	. "QUERY: " . $db->dbGetPrepareCursorValue('ins_test_foo_eom', 'query') . " |<br>"
 	. "PRIMARY KEY: " . $db->dbGetInsertPK() . " | "
 	. "RETURNING EXT: " . print_r($db->dbGetReturningExt(), true) . " | "
 	. "RETURNING RETURN: " . print_r($db->dbGetReturningArray(), true) . "<br>";

www/lib/CoreLibs/DB/IO.php

@@ -266,16 +266,18 @@ class IO
 	// 1: read new, keep at end, clean before new run
 	// 2: read new, clean at the end (temporary cache)
 	// 3: never cache
-	/** @var int */
+	/** @var int use cache (default) in dbReturn */
 	public const USE_CACHE = 0;
-	/** @var int */
+	/** @var int reset cache and read new in dbReturn */
 	public const READ_NEW = 1;
-	/** @var int */
+	/** @var int clear cache after read in dbeEturn */
 	public const CLEAR_CACHE = 2;
-	/** @var int */
+	/** @var int do not use any cache in dbReturn */
 	public const NO_CACHE = 3;
-	/** @var string */
+	/** @var string default hash type */
 	public const ERROR_HASH_TYPE = 'adler32';
+	/** @var string regex to get returning with matches at position 1 */
+	public const REGEX_RETURNING = '/\s?returning(?: (.+?));?$/i';
 
 	// recommend to set private/protected and only allow setting via method
 	// can bet set from outside
@@ -1007,7 +1009,7 @@ class IO
 							$this->pk_name_table[$table] : 'NULL';
 				}
 				if (
-					!preg_match("/\s?returning /i", $this->query) &&
+					!preg_match(self::REGEX_RETURNING, $this->query) &&
 					$this->pk_name && $this->pk_name != 'NULL'
 				) {
 					// check if this query has a ; at the end and remove it
@@ -1016,7 +1018,9 @@ class IO
 					$this->query = !is_string($__query) ? $this->query : $__query;
 					$this->query .= " RETURNING " . $this->pk_name;
 					$this->returning_id = true;
-				} elseif (preg_match("/\s?returning (.*)/i", $this->query, $matches)) {
+				} elseif (
+					preg_match(self::REGEX_RETURNING, $this->query, $matches)
+				) {
 					if ($this->pk_name && $this->pk_name != 'NULL') {
 						// add the primary key if it is not in the returning set
 						if (!preg_match("/$this->pk_name/", $matches[1])) {
@@ -1030,7 +1034,7 @@ class IO
 		// if we have an UPDATE and RETURNING, flag for true, but do not add anything
 		if (
 			$this->__checkQueryForUpdate($this->query) &&
-			preg_match("/\s?returning (.*)/i", $this->query, $matches)
+			preg_match(self::REGEX_RETURNING, $this->query, $matches)
 		) {
 			$this->returning_id = true;
 		}
@@ -2288,11 +2292,14 @@ class IO
 						$this->prepare_cursor[$stm_name]['pk_name'] = $pk_name;
 					}
 					// if no returning, then add it
-					if (!preg_match("/\s?returning /i", $query) && $this->prepare_cursor[$stm_name]['pk_name']) {
+					if (
+						!preg_match(self::REGEX_RETURNING, $query) &&
+						$this->prepare_cursor[$stm_name]['pk_name']
+					) {
 						$query .= " RETURNING " . $this->prepare_cursor[$stm_name]['pk_name'];
 						$this->prepare_cursor[$stm_name]['returning_id'] = true;
 					} elseif (
-						preg_match("/\s?returning (.*)/i", $query, $matches) &&
+						preg_match(self::REGEX_RETURNING, $query, $matches) &&
 						$this->prepare_cursor[$stm_name]['pk_name']
 					) {
 						// if returning exists but not pk_name, add it