Created
July 10, 2014 23:05
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PHP Helper functions for Safe Base64 URL encode
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| <?php | |
| function base64url_encode($data) { | |
| return rtrim(strtr(base64_encode($data), '+/', '-_'), '='); | |
| } | |
| function base64url_decode($data) { | |
| return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT)); | |
| } | |
| ?> |
shortest possible I could come up with to pad correctly was
str_repeat("=",-strlen($data) & 3)
wrapping it:
return base64_decode(strtr($b64url, '-_', '+/').str_repeat("=",-strlen($str) & 3));
@raat1979 thank you !
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Wrong example, the @maaaddog's comment is right