Checks if all of the characters in the provided string,
text, are alphabetic.
In the standard C locale letters are just
[A-Za-z] and ctype_alpha() is
equivalent to (ctype_upper($text) || ctype_lower($text))
if $text is just a single character, but other languages have letters that
are considered neither upper nor lower case.
Список параметров
text
The tested string.
Возвращаемые значения
Returns TRUE if every character in text is
a letter from the current locale, FALSE otherwise.
Примеры
Пример 1. A ctype_alpha() example (using the default locale)
<?php $strings = array('KjgWZC', 'arf12'); foreach ($strings as $testcase) { if (ctype_alpha($testcase)) { echo "The string $testcase consists of all letters.\n"; } else { echo "The string $testcase does not consist of all letters.\n"; } } ?>
Результат выполнения данного примера:
The string KjgWZC consists of all letters.
The string arf12 does not consists of all letters.