Password hashing in php 5.2.3 with password_hash(), is it real?

Question

PHP

Good afternoon. I use the functions for hashing and checking the password:
password_hash ()
and
password_verify ()
And everything was fine until the task was set to transfer the project to the hosting, where the php version is 5.2.3 (there is no possibility to change the version). PHP version 5.5 is required for these functions to work. I went online looking for a solution to this problem. The only one I found is the library - password_compat , but it requires 5.3 =\ Is there any other way or library to use these functions on php 5.2.3? Or am I doomed to redo registration and authorization?

Answer 1

www.openwall.com/phpass

Answer 2

https://github.com/ircmaxell/password_compat
PHP equivalent.

Answer 3

Is there any other way or library to use these functions in php 5.2.3? Or am I doomed to redo registration and authorization?

For updating PHP. Currently, the minimum fully supported version of PHP is 5.5.

Answer 4

And the point is to put the project on the ancient php.