php function Htmlspecialchars (), htmlentities () and other _php tutorials

When the Web editor writes the content of the article to the database, or reads the contents of the database, there are often unresolved problems, a lot of code, which is actually an HTML entity and the corresponding string conversion problem.

Mainly related to Htmlspecialchars (), Htmlentities (), Htmlspecialchars_decode () these functions.

The Htmlspecialchars () function converts some pre-defined characters to HTML entities.

The predefined characters are:

& (and number) becomes &

"(double quotes) becomes"

' (single quote) become '

< (less than) becomes <

> (greater than) becomes >

PHP htmlentities () function

Definition and usage

The Htmlentities () function converts a character to an HTML entity.

Grammar

Htmlentities (String,quotestyle,character-set)

Notice the difference here.

PHP Htmlspecialchars_decode () function

Definition and usage

The Htmlspecialchars_decode () function converts some pre-defined HTML entities to characters.

The HTML entities that will be decoded are:

& Become & (and No.)

"Become" (double quotes)

' Become ' (single quote)

< becomes < (less than)

> Become > (Greater than)

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