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mb_decode_numericentity

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

mb_decode_numericentity — Decodifica referência de string numérica HTML para caractere

Descrição

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

Converte a referência de string numérica de string string em um bloco especificado para caractere.

Parâmetros

string: A string sendo decodificada.
map: map é um array que especifica a área de código a ser convertida.
encoding: O parâmetro encoding é a codificação de caracteres. Se for omitido ou null, o valor da codificação de caracteres interna será usado.
is_hex: Este parâmetro não é utilizado.

Valor Retornado

A string convertida.

Registro de Alterações

Versão	Descrição
8.0.0	O parâmetro `encoding` agora pode ser nulo.

Exemplos

Exemplo #1 Exemplo de map

<?php
$convmap = array (
   int start_code1, int end_code1, int offset1, int mask1,
   int start_code2, int end_code2, int offset2, int mask2,
   ........
   int start_codeN, int end_codeN, int offsetN, int maskN );
// Especifique o valor Unicode para start_codeN e end_codeN
// Adicione offsetN ao valor e faça 'AND' bit a bit com maskN,
// em seguida, converta o valor para referência de string numérica.
?>

Exemplo #2 map exemplo de escape de string JavaScript

<?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
          ];
  // Codificação de caractere é 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*8, 8);
      $v = base_convert($u, 16, 10);
      if ($v < 256 && $map[$v]) {
        $encoded .= '\\x'.substr($u, 6,2);
      } 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;
}

// Dados de teste
$convmap = [ 0x0, 0xffff, 0, 0xffff ];
$msg = '';
for ($i=0; $i < 1000; $i++) {
  // chr() não pode gerar dados UTF-8 corretos com valor maior que 128, use mb_decode_numericentity().
  $msg .= mb_decode_numericentity('&#'.$i.';', $convmap, 'UTF-8');
}

// var_dump($msg);
var_dump(escape_javascript_string($msg));

Veja Também

mb_encode_numericentity() - Codificar caractere para referência numérica HTML

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User Contributed Notes 4 notes

down

donovan at conduit it ¶

18 years ago


note that at this time it seems that mb_decode_numericentity() only works with decimal entities and not hexadecimal entities.  This fact would have saved me a good hour of time in debugging.

For those who need to convert hex entities try first converting them all to decimal entities with a combination of the preg_replace() and hexdec() functions.

down

abderrahmanekaddour dot aissat at gmail dot com ¶

2 years ago


<?php

// the following documentation depending on understanding of the code source of php mbr
// first in order to optimise the work of php
// the string must contain "&" or else php won't bother trying to decode.
// for the map : int start_codeN, int end_codeN, int offsetN, int maskN
// the entity must be in the range [start_codeN, end_codeN] , if the entity is greater or less
// mb_decode_numericentity will ignore the decode process and return the $string as it is.
// in the late version of php, $map : "must have a multiple of 4 elements"

$map = [ 0x0, 0xFFFF, 0, 0];
echo mb_decode_numericentity('&#109;', $map ); // result "m"
// if offsetN = 1 result "l" ; the more you increase the decimal the more it use OR operrand.
$map_2 = [ 0x0, 0xFFFF, 60, 0];
echo mb_decode_numericentity('&#109;', $map_2 ); // decode ( &#49; ) result : "1"

// entity Reference to check the result : https://cs.stanford.edu/people/miles/iso8859.html#ISO

?>

down

dev at glossword info ¶

21 years ago


Just two great functions for daily use:

/* Converts any HTML-entities into characters */
function my_numeric2character($t)
{
    $convmap = array(0x0, 0x2FFFF, 0, 0xFFFF);
    return mb_decode_numericentity($t, $convmap, 'UTF-8');
}
/* Converts any characters into HTML-entities */
function my_character2numeric($t)
{
    $convmap = array(0x0, 0x2FFFF, 0, 0xFFFF);
    return mb_encode_numericentity($t, $convmap, 'UTF-8');
}
print my_numeric2character('&#8217; &#7936; &#226;');
print my_character2numeric(' ? ? ');

down

-1

fernandosilveira at yahoo dot com dot br ¶

4 years ago


Be careful! 
In addition to translate numeric entities to chars on specified target encoding, this function encodes every character from input string to the specified target encodin, even if the characters are outside the range defined by the conversion map.

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