using preg_match to detect persian (farsi) characters in string

Question

I am trying to validate form data from server-side. my interest is that the user just fill the form by Persian characters.

I am using this code:

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Answer 1

this regex:

if(preg_match("/^[آ ا ب پ ت ث ج چ ح خ د ذ ر ز ژ س ش ص ض ط ظ ع غ ف ق ک گ ل م ن و ه ی]/", $_POST['name']))

included numbers and space?