URL Chinese encoding problem when using Curl to crawl remote content_PHP tutorial

To encode URLs in PHP, you can use urlencode() or rawurlencode(). The difference between the two is that the former encodes spaces as '+', while the latter encodes spaces as '%20'. However, it should be noted that when encoding Only part of the URL should be encoded, otherwise colons and backslashes in the URL will also be escaped. Here is a detailed explanation:

1

string urlencode( string str)

Returns a string in which all non-alphanumeric characters except -_. will be replaced with a percent sign (%) followed by two hexadecimal digits, and spaces are encoded as plus signs ( +).

Example 1: The difference between urlencode function and rawurlencode function

$str='blog';

echo urlencode($str);

echo "
";

echo rawurlencode($str);

url result:

%B2%A9+%BF%CD

%B2%A9%20%BF%CD

Example 2: URL Chinese encoding method

From url: "http://www.baidu.com/s?wd=blog"

$url='http://www.baidu.com/s?wd=blog';

$arr=explode('=',$url);

$url=$arr[0].'='.rawurlencode($arr[1]);

echo $url;

Result:

Maybe use the following url encoding function

function cn_urlencode($url){

$pregstr = "/[x{4e00}-x{9fa5}]+/u";//UTF-8 Chinese regular

if(preg_match_all($pregstr,$url,$matchArray)){//Match Chinese, return array

foreach($matchArray[0] as $key=>$val){

$url=str_replace($val, urlencode($val), $url);//Replace translation with Chinese

}

if(strpos($url,' ')){//If there are spaces

$url=str_replace(' ','%20',$url);

}

}

return $url;

}

http://www.bkjia.com/PHPjc/477128.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/477128.htmlTechArticleTo encode URLs in PHP, you can use urlencode() or rawurlencode(). The difference between the two is that the former Spaces are encoded as +, while the latter encodes spaces as %20, but it should be noted that...