Wordpress将the_date（）存储在一个数组中

I have this code in a foreach loop:

<?php $current_date[] = the_date('F Y'); ?>

What Im trying to do is gather all the dates into an array

but when I print_r my array, nothing appears...how would I fix this?

the_dateis an echo, use

<?php $current_date[] = the_date('F Y', '','', false); ?>

the false turns the echo off.

http://codex.wordpress.org/Function_Reference/the_date

or as Pekka has it get_the_date('F Y');