Access one Field from another field via field.tpl.php
You can access to the entity (node) to which the field is attached using $element['#object'] variable from the field template (or preprocess function).

For example, add this code in field--field-cta-button.tpl.php:

&lt;?php
$field_cta_text = $element['#object']-&gt;field_cta_text;
echo $field_cta_text[LANGUAGE_NONE][0]['value'];
?&gt;


If you installed devel module you can use dpm($element['#object']) function to inspect the entity variable.