Using the default font, which is very small and pixelated, the captcha image shows all the characters. But if I use a custom font, the captcha code doesn't always show all the characters, although it seems to have enough space. The first character is sometimes shown close to the horizontal middle of the image, and because of that not all the characters are shown. Is there another way, other than that of increasing the image's width?
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不是一个真正的答案，但我很久以前遇到过这个问题：codeigniter/captcha helper/image有时在左边填充太多
于 2013-08-20T08:24:23.013 回答