ctype_xdigit

ctype_xdigit

Check for character(s) representing a hexadecimal digit

bool **ctype_xdigit** mixed $text

Checks if all of the characters in the provided , , are hexadecimal 'digits'. string``text

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

Returns true if every character in is a hexadecimal 'digit', that is a decimal digit or a character from , false otherwise. ctype.result.empty-string text``[A-Fa-f]

Voorbeeld: A example

<?php
$strings = array('AB10BC99', 'AR1012', 'ab12bc99');
foreach ($strings as $testcase) {
    if (ctype_xdigit($testcase)) {
        echo "The string $testcase consists of all hexadecimal digits.\n";
    } else {
        echo "The string $testcase does not consist of all hexadecimal digits.\n";
    }
}
?>

The string AB10BC99 consists of all hexadecimal digits.
The string AR1012 does not consist of all hexadecimal digits.
The string ab12bc99 consists of all hexadecimal digits.

ctype_digit``IntlChar::isxdigit