IntlChar::digit - Get the decimal digit value of a code point for a given radix
Вернуться к: IntlChar
IntlChar::digit
(PHP 7)
IntlChar::digit — Get the decimal digit value of a code point for a given radix
Описание
$codepoint
[, int $radix = 10
] )Returns the decimal digit value of the code point in the specified radix.
If the radix is not in the range 2<=radix<=36 or if the value of codepoint
is not a valid digit in the specified radix, FALSE is returned.
A character is a valid digit if at least one of the following is true:
- The character has a decimal digit value. Such characters have the general category "Nd" (decimal digit numbers) and a Numeric_Type of Decimal. In this case the value is the character's decimal digit value.
- The character is one of the uppercase Latin letters 'A' through 'Z'. In this case the value is c-'A'+10.
- The character is one of the lowercase Latin letters 'a' through 'z'. In this case the value is ch-'a'+10.
- Latin letters from both the ASCII range (0061..007A, 0041..005A) as well as from the Fullwidth ASCII range (FF41..FF5A, FF21..FF3A) are recognized.
Список параметров
Возвращаемые значения
Returns the numeric value represented by the character in the specified radix,
or FALSE if there is no value or if the value exceeds the radix.
Эта функция
может возвращать как boolean FALSE, так и не-boolean значение,
которое приводится к FALSE. За более подробной информацией обратитесь к разделу
Булев тип. Используйте оператор === для проверки значения,
возвращаемого этой функцией.
Примеры
Пример #1 Testing different code points
<?php
var_dump(IntlChar::digit("0"));
var_dump(IntlChar::digit("3"));
var_dump(IntlChar::digit("A"));
var_dump(IntlChar::digit("A", 16));
?>
Результат выполнения данного примера:
int(0) int(3) bool(false) int(10)
Смотрите также
- IntlChar::forDigit() - Get character representation for a given digit and radix
- IntlChar::charDigitValue() - Get the decimal digit value of a decimal digit character
- IntlChar::isdigit() - Check if code point is a digit character
IntlChar::PROPERTY_NUMERIC_TYPE
Вернуться к: IntlChar