Translation Ready Themes & Plugins

#Quick Reference: Quick Reference:

e is for echo
x is for context
n is for plurals

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## Translate Strings: # Translate Strings:

__() – Retrieve a translated string.
_e() – Display a translated string.
_x() – Retrieve a translated string with context.
_ex() – Display a translated string with context.
_n() – Retrieve a plural or singular form based on amount.
_nx() – Hybrid of _n() and _x(). Supports context and plurals.

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# Examples:

#__() __()

Retrieve a translated string.
echo __( 'Hello.', 'text-domain' );

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#_e() _e()

Display a translated string.
_e( 'Hello.', 'text-domain' );

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#_x() _x()

Retrieve a translated string with context.
echo_x( 'post link', 'A link to the post', 'text-domain' );

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#_ex() _ex()

Display a translated string with context.
_ex( 'post link', 'A link to the post', 'text-domain' );

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#_n() _n()

Retrieve a plural or singular form based on amount.
echo _n( 'There is a comment', 'There are comments', get_comments_number(), 'text-domain');

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#_nx() _nx()

() – Hybrid of _n() and _x(). Supports context and plurals.
_nx( '%s Comment', '%s Comments', get_comments_number(), 'comments title', 'text-domain' )

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##  Using sprintf & printf: #  Using sprintf & printf:

Using sprintf
echo sprintf( __( 'You have chosen the %s theme.' ) , $color )

Using printf
printf( __( 'You have chosen the %s theme.' ) , $color );

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## Only Register Strings: # Only Register Strings:

Only register strings for Translation don’t translate them.

_n_noop() – Register plural strings in POT file. But, don’t translate them.
_nx_noop() – Register plural strings with context in POT file. But, don’t translate them.

translate_nooped_plural() – Translate the result of _n_noop() or _nx_noop().

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More Details @see https://codex.wordpress.org/I18n_for_WordPress_Developers