Here are real life values of YOURLS_URL_CONVERT encountered in the wild:
(reminder: only 36 and 62 are acceptable values)
| convert |
|---|
| 0 |
| 0123456789 |
| 0123456789abcdefghijklmnopqrstuvwxyz-_. |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_ |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_. |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_.! |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_.,/ |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_..אבגדהוזחטיכךלמםנןסעפףצץקרשת |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_/ |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_/. |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_=.?+%D0%BE%D1%84%D0%BE%D1%80%D0%BC%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D0%B8%D1%82%D0%BE+%D0%B4%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BA%D0%B0_%D1%82%D1%80%D0%B5%D0%BA |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_äöüÄÖÜ%C3%A4%C3%B6%C3%BC%C3%84%C3%96%C3%9C |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_äöüÄÖÜ%C3%A4%C3%B6%C3%BC%C3%84%C3%96%C3%9C&%26ß%c3%9f |
| 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_äöüÄÖÜß%C3%A4%C3%B6%C3%BC%C3%84%C3%96%C3%9C&%26 |
| 10 |
| 100 |
| 16 |
| 20 |
| 26 |
| 27 |
| 31 |
| 32 |
| 36 |
| 362 |
| 38 |
| 39 |
| 48 |
| 5 |
| 50 |
| 52 |
| 54 |
| 6 |
| 60 |
| 62 |
| 626 |
| 63 |
| 64 |
| 65 |
| 66 |
| 67 |
| 69 |
| 82 |
| 99 |
| abcdefghjkmnpqrtuvwxyABCDEFGHIJKLMNOPQRSTUVWXYZ012346789 |
| cosplay |
| unknown |