no_gravity

    Persistent storage can help protect
    critical data from eviction, and
    educe the chance of data loss.

    Persistent storage is not deleted by the browser,
    even if storage is running low. It will only be
    deleted if the user chooses to remove it via
    their site settings.

    def main():
     r = 0
     for j in range(20):
       for i in range(1000000):
         r += len(str(i))
     print(r)
    main()

    time python3 test.py

    <?php
    function main() {
     $r = 0;
     for ($j=0;$j<20;$j++)
       for ($i=0;$i<1000000;$i++)
         $r += strlen($i);
     print("$r\n");
    }
    main();

    time php test.php

    time pypy test.py