PHP htmlentities() Function

PHP htmlentities() Function

The htmlentities() function in PHP converts all characters to HTML entities.

Syntax

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

Parameter

string(required)- This parameter specifies the string to convert.

flags(optional)- This parameter specifies how to handle quotes, invalid encoding and the used document type. The available flag constants are as follows:

• ENT_COMPAT- Table contains entities only for double-quotes
• ENT_QUOTES- The Table contains entities for both double and single quotes
• ENT_NOQUOTES- Table contains entities neither for single quotes nor for double quotes.
• ENT_HTML401- Table specifically for HTML 4.01.
• ENT_XML1- Table for XML 1.
• ENT_XHTML- Table for XHTML.
• ENT_HTML5- Table for HTML 5.

character(optional)-  It specifies the character set.

double_encode(optional)- This parameter represents a boolean value that states whether to encode existing html entities or not.

Return

This function returns the encoded string.

Example 1

TutorialandExample'; 
// It will convert htmlentities
echo htmlentities( $str ); //printing the value
?> 

Output

<a href="https://www.tutorialandexample.com/">TutorialandExample</a> 

Example 2

&<Example>";
echo htmlentities($str, ENT_COMPAT); // Will only convert double quotes
echo "\n"; 
echo htmlentities($str, ENT_QUOTES); // will convert the double and single quotes
echo "\n";
echo htmlentities($str, ENT_NOQUOTES); // Does not convert any quotes
?> 

Output

<Tutorial>&lt;Example>
<Tutorial>&<Example>
<Tutorial>&<Example> 

Example 3

Output

My name is &amar. I'm from 'India'.