mb_preferred_mime_name
Beware, mb_regex_encoding does not support the same set of encodings as listed in mb_list_encodings.php
Example:
<?php
mb_internal_encoding('CP936');
mb_regex_encoding('CP936'); # this line produces an error
?>
mb_regex_encoding
(PHP 4 >= 4.2.0, PHP 5)
mb_regex_encoding — Returns current encoding for multibyte regex as string
Descrição
Returns the current encoding for a multibyte regex as a string.
Parâmetros
- encoding
-
O parâmetro encoding é a codificação de caractere. Se ele é omitido, o valor da codificação de caractere interna é usado.
Valor Retornado
Returns the character encoding used by multibyte regex functions.
Veja Também
- mb_internal_encoding() - Set/Get internal character encoding
- mb_ereg() - Regular expression match with multibyte support
User Contributed Notes
mb_regex_encoding
mb_regex_encoding
php dot net at phor dot net
31-Aug-2010 10:40
31-Aug-2010 10:40
Anonymous
28-Jun-2009 07:07
28-Jun-2009 07:07
To change algo the regex_encodign
<?php
echo "current mb_internal_encoding: ".mb_internal_encoding()."<br />";
echo "changing mb_internal_encoding to UTF-8<br />";
mb_internal_encoding("UTF-8");
echo "new mb_internal_encoding: ".mb_internal_encoding()."<br />";
echo "current mb_regex_encoding: ".mb_regex_encoding()."<br />";
echo "changing mb_regex_encoding to UTF-8<br />";
mb_regex_encoding('UTF-8');
echo "new mb_regex_encoding: ".mb_regex_encoding()."<br />";
?>
zl at zl dot hu
29-May-2009 03:05
29-May-2009 03:05
Return values vary in setting and getting:
<?php
echo mb_regex_encoding();
// returns encoding name as a string
?>
<?php
echo mb_regex_encoding("UTF-8");
// returns true (success) of false as a boolean
?>
/me
02-Feb-2008 04:30
02-Feb-2008 04:30
Note, that the regex encoding is only set to the initial internal character encoding. If you change the internal encoding in your script with mb_internal_encoding() the regex encoding does not change. For example:
<?php
echo "current mb_internal_encoding: ".mb_internal_encoding()."<br />";
echo "current mb_regex_encoding: ".mb_regex_encoding()."<br />";
echo "changing mb_internal_encoding to UTF-8<br />";
mb_internal_encoding("UTF-8");
echo "new mb_internal_encoding: ".mb_internal_encoding()."<br />";
echo "new mb_regex_encoding: ".mb_regex_encoding()."<br />";
?>
This code might output (depending on your initial internal character encoding):
current mb_internal_encoding: ISO-8859-1
current mb_regex_encoding: ISO-8859-1
changing mb_internal_encoding to UTF-8
new mb_internal_encoding: UTF-8
new mb_regex_encoding: ISO-8859-1
Furthermore the sentence "The default value is the internal character encoding." in the documentation might be misleading because the initial default value of the regex encoding is meant, and not the default value for the optional encoding parameter.