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@ISALPHA[string]: Returns 1 if string is entirely composed of alphabetic (a-z, A-Z) characters; 0 otherwise.

 

See also: @ISALNUM, @ISASCII, @ISCNTRL, @ISDIGIT, @ISPRINT, @ISPUNCT, @ISSPACE, @ISXDIGIT.

 

Example:

 

echo %@isalpha[abc]

1

 

echo %@isalpha[ABC]

1

 

echo %@isalpha[A B C]

0