php - Detect Alphabet only string with ctype_alpha

Detect Alphabet only string with ctype_alpha

There are times when you need a function that can detect strings which contains onlyalphabetic characters. While is_numeric can validate a given string contains numeric character, there are no is_* function variation exist which can do the same for alphabetic strings.

However, you can still test for alphabetic string using ctype_alpha() function. Example usage :

if (ctype_alpha($testcase)) {

echo 'The string $testcase consists of all letters.\n';

} else
{

echo 'The string $testcase does not consist of all letters.\n';

}

}