On Apr 17, 2011, at 21:11, Krissy Masters wrote:
> This might be rather dumb, but all the same…
>
> <?php echo $var;?> vs <?php __($var); ?>
>
> From reading __() is for l10n i18n type translate type setup but if used
> just to echo a var is there a downside? Performance issue, just plain wrong?
If $var contains a string that appears in your localized message catalogs, and
you want the localized version printed, then __($var) is correct and echo $var
is wrong.
If $var is just a variable that does not contain a localizable string, then
echo $var is correct and __($var) is wrong.
__() is usually used with inline strings, like __('Hello') so that a parser can
extract all the localizable strings from your sources and put them in your
message catalog template, from which they can then be merged into all your
message catalogs and then translated using tools like poEdit or, if you're
careful, a plain text editor. Read gettext documentation for more information.
In CakePHP 1.3, __() has a second parameter, a boolean that says whether to
return the data. The default is false, in which case it echoes the data. This
default has always seemed peculiar to me, and in CakePHP 2.0, it's gone, and
__() always returns data; if you want to echo it, you echo it using echo
__(...).
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