基于浏览器语言的国家/地区列表

Posted 2021-02-23

The following codes populate the country list into dropdown box based on browser's languages. The country information is getting from geolocation.com

<?php
////////////////////////////////////////////////////////////////////////////////////////////////
//The following codes populate the country list into dropdown box based on  browser's languages.
//The country information is getting from geolocation.com, 
//free license with attribution: The geolocation data is provided by http://www.geolocation.com
 
//Get the languages
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
	echo '<p>Browser Languages: ' . $_SERVER['HTTP_ACCEPT_LANGUAGE'] . '</p>';
	echo '<p style="margin:0px; padding:0px;">Country List <span style="font-size:9pt; display:block;">The geolocation data is provided by <a href="http://www.geolocation.com">http://www.geolocation.com</a></span></p>';
 
	////////////////////////////
	//Get the browser languages
	if(preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)s*(;s*qs*=s*(1|0.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_matches)){
		$langs = array_combine($lang_matches[1], $lang_matches[4]);
		foreach ($langs as $lang => $val)
		  if ($val === '') $langs[$lang] = 1;
 
		arsort($langs, SORT_NUMERIC);
	}
 
	//Default to english
	$language = 'en-us';
	foreach ($langs as $lang => $val){
		$language = $lang;
		break;
	}
 
	//////////////////////
	//Load the Country File
	//Notes: 
	//Download the CSV file from http://www.geolocation.com
	//Rename the CSV to country-en-us.csv (for english version),
	//country-zh-cn.csv (for chinese simplified version),
	//country-zh-tw.csv (for chinese traditional version)
	//and save in the same folder as the php code resided.
	echo '<select>';
	$countries = file_get_contents("country-$language.csv");
	if (preg_match_all('/"(.*?)","(.*?)","(.*?)","(.*?)"/', $countries, $matches)){
		for($nIdx=1; $nIdx < count($matches[1]); $nIdx++){
			$alpha2_code = $matches[1][$nIdx];
			$country_name = $matches[4][$nIdx];
			//echo $alpha2_code . ',' . $country_name . '<br/>';
			echo '<option value=' . $alpha2_code . '">' . $country_name . '</option>';
		}
	}
	echo '</select>';
 
}
else
	echo 'Unable to locate browser languages';
?>