mb_decode_numericentity

(PHP 4 >= 4.0.6, PHP 5)

mb_decode_numericentity — 根据 HTML 数字字符串解码成字符

说明

string mb_decode_numericentity ( string $str , array $convmap [, string $encoding = mb_internal_encoding() ] )

将数字字符串的引用str 按指定的字符块转换成字符串。

参数

str: 要解码的 string 。
convmap: convmap 是一个 array ，指定了要转换的代码区域。
encoding: encoding 参数为字符编码。如果省略，则使用内部字符编码。

返回值

转换后的字符串。

范例

Example #1 convmap 例子

  <?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  );
 // 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.
 ?>

参见

mb_encode_numericentity() - Encode character to HTML numeric string reference

用户评论:

[#1] Navi [2009-04-01 01:00:09]

Manual entity => utf8 conversion:
<?php // parse entities $raw = preg_replace_callback ( "/&#(\\d+);/u", "_pcreEntityToUtf", $raw ); function _pcreEntityToUtf($matches) { $char = intval(is_array($matches) ? $matches[1] : $matches); if ($char < 0x80) { // to prevent insertion of control characters if ($char >= 0x20) return htmlspecialchars(chr($char)); else return "&#$char;"; } else if ($char < 0x8000) { return chr(0xc0 | (0x1f & ($char >> 6))) . chr(0x80 | (0x3f & $char)); } else { return chr(0xe0 | (0x0f & ($char >> 12))) . chr(0x80 | (0x3f & ($char >> 6))). chr(0x80 | (0x3f & $char)); } } ?>

[#2] donovan at conduit it [2006-04-19 09:05:18]

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.

[#3] dirk at camindo de [2005-01-30 09:51:52]

By use of function utf8_decode you'll get a problem with all extended chars above ISO-8859-1 charset. You can solve this problem by using the

function mb_encode_numericentity before:

  // convert $text from UTF-8 to ISO-8859-1
  $convmap = array(0xFF, 0x2FFFF, 0, 0xFFFF);
  $text = mb_encode_numericentity($text, $convmap, "UTF-8");
  $text = utf8_decode($text);

The second line encodes all extended chars below 0xFF, the third line converts the rest: 0x80 - 0xFF

[#4] Andrew Simpson [2004-12-10 17:29:14]

Many web browsers will tend upload high order characters as UTF-8 encoded entities.

Here is some simple code to convert UTF-8 HTML entities within a block of text into proper characters:

<?php //decode decimal HTML entities added by web browser $body = preg_replace('/&#\d{2,5};/ue', "utf8_entity_decode('$0')", $body ); //decode hex HTML entities added by web browser $body = preg_replace('/&#x([a-fA-F0-7]{2,8});/ue', "utf8_entity_decode('&#'.hexdec('$1').';')", $body ); //callback function for the regex function utf8_entity_decode($entity){ $convmap = array(0x0, 0x10000, 0, 0xfffff); return mb_decode_numericentity($entity, $convmap, 'UTF-8'); } ?>

[#5] php at cNhOiSpPpAlMe dot org [2004-03-31 00:55:29]

Here are functions to convert hankaku to zenkaku characters (and vice-versa) in Japanese text.

<?php // Supported characters: // (space) // !#$%&()*+,./0123456789:;<=>?@ // ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_` // abcdefghijklmnopqrstuvwxyz{|} // (Katakana isn't supported.) function f_han2zen ($string,$encoding = null) { if (is_null($encoding)) $encoding = mb_internal_encoding(); $convmap = array( 0x20,0x20,0x3000-0x20,0xffff, // Space 0x21,0x7e,0xff01-0x21,0xffff); $temp = mb_encode_numericentity($string,$convmap,$encoding); $convmap = array(0,0xffff,0,0xffff); return mb_decode_numericentity($temp,$convmap,$encoding); } function f_zen2han ($string,$encoding = null) { if (is_null($encoding)) $encoding = mb_internal_encoding(); $convmap = array( 0x3000,0x3000,-(0x3000-0x20),0xffff, // Space 0xff01,0xff5e,-(0xff01-0x21),0xffff); $temp = mb_encode_numericentity($string,$convmap,$encoding); $convmap = array(0,0xffff,0,0xffff); return mb_decode_numericentity($temp,$convmap,$encoding); } // Sample usage: f_han2zen("test","shift_jis"); f_han2zen("test","utf-8"); ?>

[#6] dev at glossword info [2003-11-19 07:43:18]