Check length of string before comparing to :memory:

Author: nikic

ext/sqlite3/sqlite3.c

@@ -123,7 +123,8 @@ PHP_METHOD(sqlite3, open)
 	if (strlen(filename) != filename_len) {
 		return;
 	}
-	if (memcmp(filename, ":memory:", sizeof(":memory:")) != 0) {
+	if (filename_len != sizeof(":memory:")-1 ||
+			memcmp(filename, ":memory:", sizeof(":memory:")-1) != 0) {
 		if (!(fullpath = expand_filepath(filename, NULL TSRMLS_CC))) {
 			zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Unable to expand filepath", 0 TSRMLS_CC);
 			return;