Question

How to use ctype_alpha() function to check if all characters in a string are alphabetic (letters only) in PHP

Answer 1

$arr = array('abcXYZ', 'AbCd1fgH7', 'xyz@!$wsp', '123');
    
foreach ($arr as $s) 
{
    if (ctype_alpha($s)) 
        echo "$s is only letters <br />";
    else
        echo "$s is NOT only letters <br />";
}
    
/*
run:
  
abcXYZ is only letters
AbCd1fgH7 is NOT only letters
xyz@!$wsp is NOT only letters
123 is NOT only letters 
     
*/

 

70+ SQL courses for beginners and professionals