The solution that PHP CAPTCHA does not show only a small red cross

This article mainly explains "PHP CAPTCHA does not show only a small red cross solution", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn the solution that the PHP CAPTCHA does not show only a small red cross.

Recently, I wanted to teach myself PHP and made a CAPTCHA, but I don't know why. There is always a small red cross in the following picture, but the CAPTCHA just can't be displayed for the following reasons.

Before modification, the following error occurred

(1) the modification steps are as follows. The reason is as follows. The reason is that apache permission is not enabled.

(2) click to open php.int.

Search extension=php_gd2.dll

open? Remove the previous semicolon and restart apache, then OK, and everything will be fine.

I hope you can give me some help when you encounter such a problem.

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