zend framework - Design pattern of translations files -

i'm developping international website based on php zendframework 1.12,
, i'm going use zend_translate managing translations.

my translations put php array key=>value : (one file per language)

<?php return array(      'key'   =>  'translation',     'key2'   =>  'translation2', ); 

my question :

what best way manage keys files?

my opinion :

in first hand, use default language keys. :

'submit'  => 'valider', 'share'   => 'partager', //... 

in other hand, use special keys able directly found text appear :

'label_loginform_login'     =>  'login', 'button_mixed_submit'   =>  'submit', 'links_mixed_share'     =>  'share', //... 

but in option, best tree use keys?
how many levels ('type' / 'placement' / 'action' ...)?

and each level, how many items?

example level 'type'

• label : used standard text
• text : used long label multiple sentances
• links : used links label
• button : used buttons label
• mixed : used few things
  ...

for information, i'm going make module translation.
done using database, , php arrays created automatically perf issue.

for me, prefer second option two reasons.

1- keeping in mind you'll translating validators error messages (which keyed in way regexnotmatch), second option homogeneous set keys.

2- also, option, avoid having long phrases keys. example :

return array(     'confirmation_mail_sent' => 'message here' );  return array(     'your validation email has been sent. please click on link , ... bla bla bla bla' => 'message here' ); 

as can notice, first example more readable second one.

hope opinion clear enough.

thanks