Laravel Translation Helper Function: trans

The trans helper function is used to return the translation for the given key. It defines a $key parameter which corresponds to an array key within the group file. It also accepts an array of replacements (which are passed through the $parameters array parameter) and a $locale parameter, which can be used to specify the desired locale.

The signature for the trans helper method is:

trans($id = null, $parameters = [], $domain = 'messages', $locale = null)

Replacements are passed as a key/value pair. The replacement keys will be matched to any placeholders within the translation. Placeholders begin with a single colon (:) followed by a name and a space. For example, in the validation.php language file, the following lines can be found:

 1<?php
 2 
 3return [
 4 
 5    ...
 6 
 7    'accepted'             => 'The :attribute must be accepted.',
 8    'array'                => 'The :attribute must be an array.',
 9 
10    ...
11 
12];

In the above translation lines, :attribute is a placeholder than can be replaced using the $parameters parameter. The following code examples will demonstrate the results of using the $parameters parameter. The results will appear above the method call as a comment.

1 
2// The :attribute must be an array.
3trans('validation.array');
4 
5// The provided value must be an array.
6trans('validation.array', ['attribute' => 'provided value']);

It should be noted that the placeholder name in the $parameters parameter should not contain the leading : character.

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