mb_substitute_character
mb_substitute_character
(PHP 4 >= 4.0.6, PHP 5, PHP 7)
mb_substitute_character — Set/Get substitution character
Description
mixed mb_substitute_character ([ mixed $substrchar = mb_substitute_character() ] )
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
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