PHP urlencode版本之间的差异

Question

When I use urlencode() on the same string containing special characters in PHP7 and PHP 5.3.10, the results are different.

What I tried:

urlencode('Testör')

Output in PHP7: Test%C3%B6r

Output in PHP 5.3: Test%25C3%25B6r

Could someone explain what the %25 leading in the older PHP version is?

Answer 1

It looks to me that you've URL encoded it twice in the 5.3 output. %25 stands for %. Which is missing around the C3.