在Drupal主题创建中访问$ content值

I'm trying to create a bespoke Drupal theme. I have created a content type and have a template for that specific template type:

node--event.tpl.php

This loads fine and I can dump the $content variable and see it's content. What I'm struggling with however is getting individual elements from the $content array and outputting them on the page in the format I want. For example:

echo render($content['field_date']);

outputs:

Date:
25th December 2014...

I don't want the label however, just the date itself. Yet if I try to var_dump($content['field_date']); it outputs the whole $content array.

I've looked at the docs here: https://api.drupal.org/api/drupal/modules%21node%21node.tpl.php/7

But they don't go into much detail. So if anyone could give me any pointer on how to truly access the individual values in the $content array that would be greatly appreciated.

It is possible to print only the field value. When you debug the field first try to print the array keys of $content[…] and then work your way through to get to the field value.