Internationalization and localization of PHP functions

PHP provides I18N/L10N functions to implement multi-language support, including: gettext(): Get translated text. setlocale(): Set the locale. lc* function: perform locale-related operations. strftime(): Format date and time, using locale setting format.

Internationalization and localization of PHP functions

Internationalization (I18N) and localization (L10N) are in the application processes for handling different languages ​​and locales. PHP provides many functions that can help you implement multi-language support for your application.

gettext function

gettext() function is one of the most commonly used functions in internationalization. It converts a text string to its translated version if one exists.

<?php
$text = gettext("Hello, world!");
echo $text; // 输出："你好，世界！"
?>

To use gettext(), you need to create a locale file that contains the text string and its translation.

setlocale function

setlocale() Function sets the current locale.

<?php
// 设置语言环境为中文
setlocale(LC_ALL, 'zh_CN');
?>

lc* Functions

PHP provides a series of lc* functions that can perform locale-related operations:

• lcfirst() Lowercase the first letter of the string
• lctranslate() Convert the string to uppercase or lowercase
• ##lcwords( ) Capitalize the first letter of each word in a string

strftime function

strftime() The function formats dates and times. It uses locale settings to determine the format of dates and times.

<?php
// 输出当前日期，格式为中文
echo strftime("%Y-%m-%d %H:%M:%S", time());
?>

Practical case: Creating a simple multi-language application

Suppose we have a simple PHP application with the following code:

<?php
echo "Hello, world!";
?>

To make it support multiple languages language, we need the following steps:

Create a locale directory (
1. lang).
Create language files in the
2. lang directory, such as en.po and zh_CN.po.
Add text strings and their translations in these files.
Modify the application code to use the
4. gettext() function:

<?php
$text = gettext("Hello, world!");
echo $text;
?>

Run the application and set a different locale, for example:

LC_ALL=en php app.php

This will display the English version of the text

"Hello, world!".

By using PHP's internationalization and localization functions, you can easily create multilingual applications that can run in different languages ​​and locale settings.

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