IntlChar::digit

(PHP 7)

IntlChar::digit — Get the decimal digit value of a code point for a given radix

Description

public static int IntlChar::digit ( string $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.

Liste de paramètres

codepoint: La valeur codepoint de type integer (i.e. 0x2603 pour U+2603 SNOWMAN), ou le caractère encodé en UTF-8 de type string (i.e. "\u{2603}")
radix: The radix (defaults to 10).

Valeurs de retour

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.

Avertissement

Cette fonction peut retourner FALSE, mais elle peut aussi retourner une valeur équivalent à FALSE. Veuillez lire la section sur les booléens pour plus d'informations. Utilisez l'opérateur === pour tester la valeur de retour exacte de cette fonction.

Exemples

Exemple #1 Test de différents codepoint


<?php
var_dump(IntlChar::digit("0"));
var_dump(IntlChar::digit("3"));
var_dump(IntlChar::digit("A"));
var_dump(IntlChar::digit("A", 16));
?>

L'exemple ci-dessus va afficher :

int(0)
int(3)
bool(false)
int(10)

Voir aussi

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