How to format dates based on locale?

问题:

In a template I display the day and month of a specific date :

<div class="jour"><?php echo date('d',strtotime($content->getCreatedAt())) ?></div>
<div class="mois"><?php echo date('M',strtotime($content->getCreatedAt())) ?></div>

This works fine, problem is the month name is in English. Where do I specify that I want the month names in another locale, French for instance ?

回答1:

Symfony has a format_date helper among the Date helpers that is i18n-aware. The formats are unfortunately badly documented, see this link for a hint on them.

回答2:

default_culture only applies for the symfony internationalisation framework, not for native PHP functions. If you want to change this setting project wide, I would do so in config/ProjectConfiguration.class.php, using setlocale, and then use strftime rather than date:

// config/ProjectConfigration.class.php
setlocale(LC_TIME, 'fr_FR');

// *Success.php
<div class="jour"><?php echo strftime('%d',strtotime($content->getCreatedAt())) ?></div>
<div class="mois"><?php echo strftime('%b',strtotime($content->getCreatedAt())) ?></div>

Note that this requires locale settings to be enabled on your machine. To check, do var_dump(setlocale(LC_ALL, 'fr_FR')); If the result is false, you cannot use setlocale to do this and probably need to write the translation code yourself. Furthermore, you will need to have the correct locale installed on your system. To check what locales are installed, do locale -a at the command line.

回答3:

Sorry for butting in so late in the day, but I would like to add my own thoughts here. The best international date format that I have come up with is "%e %b %Y", e.g. 9 Mar 2012. I find this much more readable than the ISO format "%Y-%m-%d", e.g. 2012-03-09. According to the docs, the %x format should be locale sensitive, but it does not work for me, at least not on the iPhone. This may be because Safari is not passing the locale in the HTML headers, I do not know.

回答4:

It is sometimes useful to use an array with different possible values to setlocale(). Especially to support different environments (windows, linux, ...)

setlocale(LC_TIME, array('fr', 'fr_FR', 'fr_FR.utf8', 'french', 'french_FRANCE', 'french_FRANCE.utf8'));
echo strftime("%A %d %B", strtotime(date("Y-m-d")));

As the documentation states:

If locale is an array or followed by additional parameters then each array element or parameter is tried to be set as new locale until success. This is useful if a locale is known under different names on different systems or for providing a fallback for a possibly not available locale.