Php: an example of a random print output string.

: This article mainly introduces php, which is an example of randomly printed output strings. if you are interested in the PHP Tutorial, please refer to it.

 = 36) {$ n = 36 + ceil ($ n-36)/3) * 3; $ captchaResult. = substr ($ captchaSource, $ n, 3);} else {$ captchaResult. = substr ($ captchaSource, $ n, 1) ;}} echo "random print output string :". $ captchaResult."
";

The above introduces php. this is an example of the random print output string, including some content. I hope to help some friends who are interested in the PHP Tutorial.