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Intro to I18N in code
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Matthew Haines-Young
May 13, 2015
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Intro to I18N in code
Short introduction to writing code that can be easily translated in WordPress
Matthew Haines-Young
May 13, 2015
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Transcript
I18N Making your code translatable.
How translation it works. • Uses the gettext libraries. •
Wrap translatable strings in special gettext functions • Automated process - scans your code • Creates POT (Portable Objects Template) file with all translatable strings.
Note: Code is not executed when scanning for translatable strings.
Setup • Add the Text Domain to the theme/plugin header.
• This is a unique identifier. • Use dashes not underscores
__( 'string', 'text-domain' ) Basic translation function
_e( 'string', 'text-domain' ) Same, but outputs result.
Translate strings, not HTML
You cannot use variables in translatable strings. Translate placeholders and
use sprintf/printf
Don’t use variable for text domain.
Plurals • _n( $singular, $plural, $count, ‘text- domain’ ) •
1st param: the singular form of the string • 2nd param: the plural form of the string • 3rd param: the count.
_x( ‘string', 'context', 'text- domain' ); Disambiguation by context. Also
_ex. Same but outputs.
JavaScript • Use wp_localize_script to pass strings.
Resources • VIDEO: Rules for WordPress i18n - http://wordpress.tv/2014/02/26/ samuel-otto-wood-on-internationalization-plugins-and-themes-for-the-
whole-world/ • Otto on i18n - http://ottopress.com/2012/internationalization-youre- probably-doing-it-wrong/ • Plugin i18n - https://developer.wordpress.org/plugins/ internationalization/ • Theme i18n - https://developer.wordpress.org/themes/functionality/ internationalization/ • i18n quiz for developers: https://developer.wordpress.com/2015/04/23/ wordpress-developers-test-your-i18n-internationalization-knowledge/