php中如何安全地使用url_encode

? PHP ?,urlencode() ??????????? URL ?????????,????????????? URL ?????????

?? PHP ?????? urlencode(),???????:

1. ??,???????????????????,???????????????????

$input = "This is a sample string with special characters: !*'();:@&=+$,/?%#[]";

2. ?? urlencode() ???????????

$encoded_string = urlencode($input);

3. ??,$encoded_string ?????? URL ?????,??????? URL ??

$url = "https://example.com/search?query=" . $encoded_string;

4. ????????????????????,???? urldecode() ???

$decoded_string = urldecode($encoded_string);

??:urlencode() ??????????????????? URL(?????????),????? parse_url() ? http_build_query() ?????? URL ?????,????????

??:

$url = 'https://example.com/???key=value&test=??';

// ?? URL
$parsed_url = parse_url($url);

// ???????
$encoded_path = array_map('urlencode', explode('/', $parsed_url['path']));
$encoded_path = implode('/', $encoded_path);

// ?????????
$query_params = [];
parse_str($parsed_url['query'], $query_params);
$encoded_query = http_build_query($query_params);

// ???? URL
$encoded_url = $parsed_url['scheme'] . '://' . $parsed_url['host'] . '/' . $encoded_path . '?' . $encoded_query;

echo $encoded_url;

????:

https://example.com/测试?key=value&test=测试