Laracon EU Online 2021


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

mb_substitute_characterSet/Get substitution character


mb_substitute_character ([ mixed $substchar = mb_substitute_character() ] ) : mixed

Specifies a substitution character when input character encoding is invalid or character code does not exist in output character encoding. Invalid characters may be substituted NULL (no output), string or int value (Unicode character code value).

This setting affects mb_convert_encoding(), mb_convert_variables(), mb_output_handler(), and mb_send_mail().



Specify the Unicode value as an int, or as one of the following strings:

  • "none": no output
  • "long": Output character code value (Example: U+3000, JIS+7E7E)
  • "entity": Output character entity (Example: Ȁ)

Valor Retornado

If substchar is set, it returns TRUE for success, otherwise returns FALSE. If substchar is not set, it returns the current setting.


Exemplo #1 mb_substitute_character() example

/* Set with Unicode U+3013 (GETA MARK) */

/* Set hex format */

/* Display current setting */
echo mb_substitute_character();

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