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| author | Morris Jobke <hey@morrisjobke.de> | 2018-02-21 10:32:46 +0100 |
|---|---|---|
| committer | Morris Jobke <hey@morrisjobke.de> | 2018-02-21 10:32:46 +0100 |
| commit | 3bea8e05ad92502a318b06016682f30579e8144e (patch) | |
| tree | 913b50a5be7c728887ce09eac198f89659231879 /lib/private/Avatar.php | |
| parent | 6591a3bc366874ead2de646ae1ca920277c17bff (diff) | |
| download | nextcloud-server-3bea8e05ad92502a318b06016682f30579e8144e.tar.gz nextcloud-server-3bea8e05ad92502a318b06016682f30579e8144e.zip | |
Use mb_* string methods to extract first character for generated avatars
This fixes #8451 where the first character is a non-ASCII character. The `$string[0]` notation only extracted one byte and thus resulting in an invalid code. The `mb_strtoupper` method also allows to convert characters independently from the current locale on the server.
See also http://php.net/manual/en/function.mb-strtoupper.php
Signed-off-by: Morris Jobke <hey@morrisjobke.de>
Diffstat (limited to 'lib/private/Avatar.php')
| -rw-r--r-- | lib/private/Avatar.php | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/private/Avatar.php b/lib/private/Avatar.php index 352fcf05883..14632075ca1 100644 --- a/lib/private/Avatar.php +++ b/lib/private/Avatar.php @@ -263,7 +263,7 @@ class Avatar implements IAvatar { * @return string */ private function generateAvatar($userDisplayName, $size) { - $text = strtoupper($userDisplayName[0]); + $text = mb_strtoupper(mb_substr($userDisplayName, 0, 1), 'UTF-8'); $backgroundColor = $this->avatarBackgroundColor($userDisplayName); $im = imagecreatetruecolor($size, $size); |