[stable31] fix: multibyte text wrapping#6075
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vitormattos merged 2 commits intostable31from Dec 10, 2025
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The native PHP wordwrap() function does not handle multibyte characters correctly, causing text with accents, CJK characters, or emojis to be wrapped at incorrect positions. This commit introduces mbWordwrap(), a custom implementation that uses mb_strlen() and mb_substr() to properly handle UTF-8 and multibyte text wrapping in signature images. Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>
Add test cases for Portuguese text with accents to verify that the multibyte-safe wordwrap implementation correctly handles text with diacritical marks and other Unicode characters in signature images. Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>
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Backport of PR #6074