htmlspecialchars javascript

The translations performed are: Copy Code code as follows: ' & ' (ampersand) becomes ' & ' ' "' (double quote) becomes '" ' when ent_noquotes are not set. ' (single quote) becomes ' "is set. ' ' > ' (greater than) becomes ' > '

Many people think that htmlentities and htmlspecialchars have the same functions and are used to format html code. I used to think so, but today I found this is not the case. The translations saved Med are: The code is as follows: '&' (Ampersand)

The translations saved med are: CopyCode The Code is as follows: '&' (ampersand) becomes '&' '"' (Double quote) becomes '" 'when ent_noquotes is not set. ''' (Single quote) becomes ''' only when ent_quotes is set. ''>' (Greater than) becomes '>'

The translations performed is: Copy CodeThe code is as follows: ' & ' (ampersand) becomes ' & ' ' ' ' (double quote) becomes ' "When Ent_noquotes was not set. "(single quote) becomes" only if Ent_quotes is set. ' ' > ' (greater than) becomes ' > '

Many people think that htmlentities and htmlspecialchars function is the same, are formatted HTML code, I used to think so, but today I found that is not the case.The translations performed is:Copy CodeThe code is as follows:' & ' (ampersand)

Ask xss to bypass the htmlspecialchars filtering principle and check the website security recently. When we see xss, some documents say that it is very easy to bypass htmlspecialchars filtering. Which of the following methods can bypass

${content}

What is the Htmlspecialchars () function?The Htmlspecialchars () function converts special characters to HTML entities. This means that HTML characters such as are replaced with Important tips for PHP form security$_server["php_self"] variables can

Because Javascript (usually) client technology and PHP (usually) server technology are used, since HTTP is a "stateless" protocol, variables cannot be directly shared between the two languages.However, people may use the relationship between

Update20151202: Thank you for your attention and answers. The defense methods I have learned from various methods are as follows: PHP outputs html directly, and the following methods can be used for filtering: {code ...} if PHP is output to JS Code