PHP Regular Expression Judgment Browser language instance _php tutorial

PHP function instance, based on regular expressions to determine the browser's default language, in fact, PHP judgment browser language using Super global variable _server["http_accept_language" can be obtained, And then according to the HTTP request Accept-language: header information with regular match, finally determine the language type.

PHP determines the browser instance function:

01

02$lang=substr ($_server[' http_accept_language '],0,4);

03//only the first 4 digits, can judge the most preferred language

04if (Preg_match ("/zh-c/i", $lang))

echo "Simplified Chinese";

06else if (Preg_match ("/zh/i", $lang))

"Traditional Chinese";

08else if (Preg_match ("/en/i", $lang))

echo "中文版";

10else if (Preg_match ("/fr/i", $lang))

echo "French";

12else if (Preg_match ("/de/i", $lang))

echo "German";

14else if (Preg_match ("/jp/i", $lang))

echo "Japanese";

16else if (Preg_match ("/ko/i", $lang))

echo "Korean";

18else if (Preg_match ("/es/i", $lang))

echo "Spanish";

20else if (Preg_match ("/sv/i", $lang))

echo "Swedish";

22else

$_server[echo "Http_accept_language"];

24?>

This function automatically returns the test result when it is used only by invoking a function name.

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