how to match non-keyboard characters using php?

how can开发者_StackOverflow we match non-keyboards characters using php?? characters like-- ♠♣♥♦

i want to check if a data contains non-keyboard characters and if it does i'll have to reject it as per my requirements.

Try

• mb_ereg — Regular expression match with multibyte support

Example:

var_dump( mb_ereg('⊃', "≥⊂⊃⊄⊆⊇⊕⊗") ); // 1

You might want to clarify the question to get better answers/examples.

Also see

• Are the PHP preg_functions multibyte safe?