Regular Expression to match only alphabetic characters

Question

I was wondering If I could get a regular expression which will match a string that only has alphabetic characters  and that alone

User · Answer

a-zA-Z  should do that just fine   You can reference the cheat sheet

User · Answer

You may use any of these 2 variants      A-Z    i    A-Za-z       to match an input string of ASCII alphabets     A-Za-z  will match all the alphabets  both lowercase and uppercase     and   will make sure that nothing but these alphabets will be matched    Code   preg match     A-Z    i    abcAbc Xyz    m   var dump  m     Output   array 0        Test case is for OP s comment that he wants to match only if there are 1 or more alphabets present in the input  As you can see in the test case that matches failed because there was   in the input string abcAbc Xyz    Note  Please note that the above answer only matches ASCII alphabets and doesn t match Unicode characters  If you want to match Unicode letters then use      p L    u   Here   p L  matches any kind of letter from any language

User · Answer

In Ruby and other languages that support POSIX character classes in bracket expressions  you can do simply     A   alpha     z i   That will match alpha-chars in all Unicode alphabet languages  Easy peasy   More info  http   en wikipedia org wiki Regular expression Character classes http   ruby-doc org core-2 0 Regexp html

User · Answer

This will match one or more alphabetical characters      a-z       You can make it case insensitive using      a-z    i   or      a-zA-Z

User · Answer

If you need to include non-ASCII alphabetic characters  and if your regex flavor supports Unicode  then   A pL  z   would be the correct regex   Some regex engines don t support this Unicode syntax but allow the  w alphanumeric shorthand to also match non-ASCII characters  In that case  you can get all alphabetics by subtracting digits and underscores from  w like this    A   W d    z    A matches at the start of the string   z at the end of the string    and   also match at the start end of lines in some languages like Ruby  or if certain regex options are set

[regex] Regular Expression to match only alphabetic characters

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