PHP mb_encode_numericentity() Function - Coding

The mb_encode_numercentity() function is an inbuilt function in PHP that is used to encode HTML entities with numerical values encoded using either decimal or hexadecimal representation.

Syntax:

string mb_encode_numericentity( 
    string $string, 
    array $map, 
    string $encoding,
    bool $hex 
)

Parameters: This function accepts four parameters that are described below.

$string: The input string to encode.
$map: An array that sets the range of Unicode characters to encode. The array is of the form array (start, end, offset, mask).
$encoding: The character encoding of the input and output strings.
$hex: An array that sets the range of Unicode characters to encode. The array is of the form array (start, end, offset, mask).

Return Values: The mb_encode_numericentity() function returns the encoded string, or “false” if an error occurs.

Examples of PHP mb_encode_numericentity() Function

Example 1: The following program demonstrates the mb_decode_numercentity() function.

PHP

<?php    
 
$text = "I ♥ PHP!";
 
// Encode special characters as HTML entities
$encodedText = mb_encode_numericentity($text, 
    [0x80, 0xffff, 0, 0xffff], 'UTF-8');
 
echo $encodedText;  
 
?>

Output

I &#9829; PHP!

Example 2: The following program demonstrates the mb_decode_numercentity() function.

PHP

<?php
 
$text = "Hello, <b>World</b>";
 
// Array of tags to check for
$tagsToEncode = ['<b>', '<strong>', '<i>', '<em>'];
 
// Encode special characters as HTML entities 
// if the string contains any specified tags
foreach ($tagsToEncode as $tag) {
    if (strpos($text, $tag) !== false) {
        $encodedText = mb_encode_numericentity( $text, 
            [0x80, 0xffff, 0, 0xffff], 'UTF-8');
        break;
    } else {
        $encodedText = $text;
    }
}
 
echo $encodedText;
 
?>

Output

Hello, <b>World</b>

Example 3: The following program demonstrates the mb_decode_numercentity() function.

PHP

<?php
$userContent = "<p>This is a <strong>test</strong> article with some &nbsp; entities.</p>";
 
// Function to decode HTML entities
function decodeUserContent($content) {
    return mb_decode_numericentity($content, array(0x0, 0x10FFFF, 0, 'UTF-8'));
}
 
// Display the user-submitted content safely
echo decodeUserContent($userContent);
?>

Output

<p>This is a <strong>test</strong> article with some &nbsp; entities.</p>

Reference: https://www.php.net/manual/en/function.mb-encode-numericentity.php

Reffered: https://www.geeksforgeeks.org

PHP

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Category:	Coding
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