mb_decode_numericentity

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

mb_decode_numericentityDecode HTML numeric string reference to character

Description

mb_decode_numericentity(string $string, array $map, ?string $encoding = null): string

Convert numeric string reference of string string in a specified block to character.

Parameters

string

The string being decoded.

map

map is an array that specifies the code area to convert.

encoding

The encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.

is_hex

This parameter is not used.

Return Values

The converted string.

Changelog

Version Description
8.0.0 encoding is nullable now.

Examples

Example #1 map example

<?php
$convmap 
= array (
   
int start_code1int end_code1int offset1int mask1,
   
int start_code2int end_code2int offset2int mask2,
   ........
   
int start_codeNint end_codeNint offsetNint maskN );
// Specify Unicode value for start_codeN and end_codeN
// Add offsetN to value and take bit-wise 'AND' with maskN, 
// then convert value to numeric string reference.
?>

Example #2 map example escapes JavaScript string

<?php
function escape_javascript_string($str) {
  
$map = [
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,0,0// 49
          
0,0,0,0,0,0,0,0,1,1,
          
1,1,1,1,1,0,0,0,0,0,
          
0,0,0,0,0,0,0,0,0,0,
          
0,0,0,0,0,0,0,0,0,0,
          
0,1,1,1,1,1,1,0,0,0// 99
          
0,0,0,0,0,0,0,0,0,0,
          
0,0,0,0,0,0,0,0,0,0,
          
0,0,0,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1// 149
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1// 199
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1,
          
1,1,1,1,1,1,1,1,1,1// 249
          
1,1,1,1,1,1,1// 255
          
];
  
// Char encoding is UTF-8
  
$mblen mb_strlen($str'UTF-8');
  
$utf32 bin2hex(mb_convert_encoding($str'UTF-32''UTF-8'));
  for (
$i=0$encoded=''$i $mblen$i++) {
      
$u substr($utf32$i*88);
      
$v base_convert($u1610);
      if (
$v 256 && $map[$v]) {
        
$encoded .= '\\x'.substr($u6,2);
      } else if (
$v == 2028) {
        
$encoded .= '\\u2028';
      } else if (
$v == 2029) {
        
$encoded .= '\\u2029';
      } else {
        
$encoded .= mb_convert_encoding(hex2bin($u), 'UTF-8''UTF-32');
      }
   }
   return 
$encoded;
}
 
// Test data
$convmap = [ 0x00xffff00xffff ];
$msg '';
for (
$i=0$i 1000$i++) {
  
// chr() cannot generate correct UTF-8 data larger value than 128, use mb_decode_numericentity().
  
$msg .= mb_decode_numericentity('&#'.$i.';'$convmap'UTF-8');
}
 
// var_dump($msg);
var_dump(escape_javascript_string($msg));

See Also

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