SQLite3::escapeString can be static as it doesn't rely on an instance of SQLite

ext/sqlite3/sqlite3.c

@@ -1507,7 +1507,7 @@ static zend_function_entry php_sqlite3_class_methods[] = {
 	PHP_ME(sqlite3,		lastErrorMsg,		arginfo_sqlite3_lasterrormsg, ZEND_ACC_PUBLIC)
 	PHP_ME(sqlite3,		loadExtension,		arginfo_sqlite3_loadextension, ZEND_ACC_PUBLIC)
 	PHP_ME(sqlite3,		changes,			arginfo_sqlite3_changes, ZEND_ACC_PUBLIC)
-	PHP_ME(sqlite3,		escapeString,		arginfo_sqlite3_escapestring, ZEND_ACC_PUBLIC)
+	PHP_ME(sqlite3,		escapeString,		arginfo_sqlite3_escapestring, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
 	PHP_ME(sqlite3,		prepare,			arginfo_sqlite3_prepare, ZEND_ACC_PUBLIC)
 	PHP_ME(sqlite3,		query,				arginfo_sqlite3_query, ZEND_ACC_PUBLIC)
 	PHP_ME(sqlite3,		querySingle,		arginfo_sqlite3_querysingle, ZEND_ACC_PUBLIC)

ext/sqlite3/tests/sqlite3_23_escape_string.phpt

@@ -12,7 +12,7 @@ echo "Creating Table\n";
 var_dump($db->exec('CREATE TABLE test (time INTEGER, id STRING)'));
 
 echo "INSERT into table\n";
-var_dump($db->exec("INSERT INTO test (time, id) VALUES (" . TIMENOW . ", '" . $db->escapeString("test''%") . "')"));
+var_dump($db->exec("INSERT INTO test (time, id) VALUES (" . TIMENOW . ", '" . SQLite3::escapeString("test''%") . "')"));
 var_dump($db->exec("INSERT INTO test (time, id) VALUES (" . TIMENOW . ", 'b')"));
 
 echo "SELECTING results\n";