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ctype_graph

(PHP 4 >= 4.0.4, PHP 5)

ctype_graph - Check for any printable character(s) except space

Описание

bool ctype_graph ( string text )

Checks if all of the characters in the provided string, text, creates visible output.

Список параметров

text

The tested string.

Возвращаемые значения

Returns TRUE if every character in text is printable and actually creates visible output (no white space), FALSE otherwise.

Примеры

Пример 1. A ctype_graph() example
$strings = array('string1' => "asdf\n\r\t", 'string2' => 'arf12', 'string3' => 'LKA#@%.54');
foreach ($strings as $name => $testcase) {
    if (ctype_graph($testcase)) {
        echo "The string '$name' consists of all (visibly) printable characters.\n";
    } else {
        echo "The string '$name' does not consist of all (visibly) printable characters.\n";
    }
}

Результат выполнения данного примера:

The string 'string1' does not consist of all (visibly) printable characters. The string 'string2' consists of all (visibly) printable characters. The string 'string3' consists of all (visibly) printable characters.

Смотрите также: ctype_alnum(), ctype_print(), ctype_punct().

Описание на ru2.php.net
Описание на php.ru