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This article mainly introduces the use of htmlspecialchars in php, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Htmlspecialchars

Htmlspecialchars escapes several special characters in HTML into HTML Entity (format: & xxxx;), including (&), ('), ("), () five characters.

& (AND) = > &

"(double quotation marks) = >" (when ENT_NOQUOTES is not set)

'(single quotation marks) = > & # 039; (when ENT_QUOTES is set)

(greater than sign) = > >

Htmlspecialchars can be used to filter $GET,$POST,$COOKIE data to prevent XSS. Note that the htmlspecialchars function only escapes HTML characters that are considered to be a security risk. Use htmlentities if you want to escape all HTML characters that can be escaped. Htmlspecialchars_decode is the decode function of htmlspecialchars.

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