... in that case ... 

/* rexx */

strings.1 = 85865487878
strings.2 = 'oewiopeoewirpo iep '
strings.3 = '4889jfkjdk'
strings.4 = 'hfhjh 767484'
strings.5 = '<&jZ>(){}'
strings.6 = '<&>(){}'

do i = 1 to 6
  say has_alpha(strings.i) '-> alpha? ' "'"strings.i"'"
end

exit

has_alpha: procedure
  parse upper arg string

  if (length(string) = 0 | datatype(string) = 'NUM')
  then
    return 0

  start = c2d( 'A' )
  stop  = c2d( 'Z' )
  do while start <= stop

    if ( pos(d2c(start) , string) \= 0 )
    then
      return 1

    start = start +1
  end

  return 0

[download]

...which gives...

0 -> alpha?  '85865487878'
1 -> alpha?  'oewiopeoewirpo iep '
1 -> alpha?  '4889jfkjdk'
1 -> alpha?  'hfhjh 767484'
1 -> alpha?  '<&jZ>(){}'
0 -> alpha?  '<&>(){}'

In reply to Re^3: Challenge - Creative Way To Detect Alpha Characters by parv
in thread Challenge - Creative Way To Detect Alpha Characters by Limbic~Region

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