WP-optimize 3.2.5 does’nt work on PHP5.6.36

Replies: 0

hi, everyone.

I checked in updated WP-Optimize 3.2.5, but not working on PHP 5.6.36.

error messages:
Parse error: syntax error, unexpected ‘::’ (T_PAAMAYIM_NEKUDOTAYIM), expecting ‘)’ in /var/www/***/wp-content/plugins/wp-optimize/includes/class-wp-optimize-admin.php on line 148

I tried rewrite for class-wp-optimize-admin.php, error disappeared.

class-wp-optimize-admin.php, line 148, 215, 407:
[ WP_Optimize()::is_premium() ] -> [ WP_Optimize::is_premium() ]

I think, PHP 5.6.36 is unimplemented [ WP_Optimize()::is_premium() ]…
we need upgrade PHP…?

thank you.