ctype_alpha

ctype_alpha

Check for alphabetic character(s)

bool **ctype_alpha** mixed $text

Checks if all of the characters in the provided , , are alphabetic. In the standard locale letters are just and is equivalent to if $text is just a single character, but other languages have letters that are considered neither upper nor lower case. string``text``C``[A-Za-z]``ctype_alpha``(ctype_upper($text) || ctype_lower($text))

textThe tested string. note.ctype.parameter.integer note.ctype.parameter.non-string

Returns true if every character in is a letter from the current locale, false otherwise. ctype.result.empty-string text

Voorbeeld: A 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";
    }
}
?>

The string KjgWZC consists of all letters.
The string arf12 does not consist of all letters.

ctype_upper``ctype_lower``setlocale``IntlChar::isalpha