Definition and usage of php htmlentities() function

php htmlentities() function converts characters into HTML entities. This article introduces the basic usage and examples of the php htmlentities() function to coders. Coders in need can refer to it.

Definition and Usage

htmlentities() function converts characters into HTML entities.

Tip: To convert HTML entities back to characters, use the html_entity_decode() function.

Tip: Please use the get_html_translation_table() function to return the translation table used by htmlentities().

Syntax

htmlentities(string,flags,character-set,double_encode)

Technical details

Example 1

Convert characters to HTML entities:

"; echo htmlentities($str, ENT_QUOTES); // 转换双引号和单引号 echo "
"; echo htmlentities($str, ENT_NOQUOTES); // 不转换任何引号 ?>

The HTML output of the above code is as follows (View Source code):

   Bill & 'Steve'
 Bill & 'Tarzan'
 Bill & 'Steve'  

Browser output of the above code:

Bill & 'Steve' Bill & 'Steve' Bill & 'Steve'

Example 2

Convert some characters into HTML entities by using Western European character sets:

The HTML output of the above code is as follows (view source code ):

   My name is Øyvind Åsane. I'm Norwegian.  

Browser output of the above code:

My name is ?yvind ?sane. I'm Norwegian.

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