ctype_alnum

ctype_alnum

Check for alphanumeric character(s)

bool **ctype_alnum** mixed $text

Checks if all of the characters in the provided , , are alphanumeric. string``text

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

Returns true if every character in is either a letter or a digit, false otherwise. ctype.result.empty-string text

Voorbeeld: A example (using the default locale)

<?php
$strings = array('AbCd1zyZ9', 'foo!#$bar');
foreach ($strings as $testcase) {
    if (ctype_alnum($testcase)) {
        echo "The string $testcase consists of all letters or digits.\n";
    } else {
        echo "The string $testcase does not consist of all letters or digits.\n";
    }
}
?>

The string AbCd1zyZ9 consists of all letters or digits.
The string foo!#$bar does not consist of all letters or digits.

ctype_alpha``ctype_digit``setlocale``IntlChar::isalnum