PHP ctype_alpha() function with example Archives

PHP ctype_alpha() work: Here, we will find out about the ctype_alpha() work with the example in PHP. PHP ctype_alpha() work ctype_alpha() work is a character type (CType) work in PHP, it is utilized to check whether a given string contains just letter sets or not. It returns genuine – if the string contains just letters in order, else it returns false. Syntax: ctype_alpha(string) : bool Example: Input: "Hello" Output: true Input: "Hello123" Output: false Input: "abc@123&a" Output: false PHP Code: <?php $str = "Hello"; if(ctype_alpha($str)) echo ("$str contains only alphabets.\n"); else echo ("$str does not contain only alphabets.\n"); $str = "Hello123"; if(ctype_alpha($str)) echo ("$str contains only alphabets.\n"); else echo ("$str does not contain only alphabets.\n"); $str = "Hello world"; if(ctype_alpha($str)) echo ("$str contains only alphabets.\n"); else echo ("$str does not contain only alphabets.\n"); $str = "abc@123&a"; if(ctype_alpha($str)) echo ("$str contains only alphabets.\n"); else echo ("$str does not contain only alphabets.\n"); ?> Output: Hello contains only alphabets. Hello123 does not contain only alphabets. Hello world does not contain only alphabets. abc@123&a does not contain only alphabets.