WeberDev.com -> PHP Manual -> Check for alphabetic character(s)

Description

bool ctype_alpha ( string $text )

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.

Parameters

text: The tested string.

Return Values

Returns TRUE if every character in text is a letter from the current locale, FALSE otherwise.

Examples

Example #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";
    }
}
?>

The above example will output:

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

ctype_alpha

Description

Parameters

Return Values

Examples

See Also