IntlChar::isupper

(PHP 7, PHP 8)

IntlChar::isupperCheck if code point has the general category "Lu" (uppercase letter)

Description

public static IntlChar::isupper(int|string $codepoint): ?bool

Determines whether the specified code point has the general category "Lu" (uppercase letter).

Note:

This misses some characters that are also uppercase but have a different general category value. In order to include those, use IntlChar::isUUppercase().

Liste de paramètres

codepoint

La valeur codepoint de type entier (i.e. 0x2603 pour U+2603 SNOWMAN), ou le caractère encodé en UTF-8 de type chaîne de caractères (i.e. "\u{2603}")

Valeurs de retour

Returns true if codepoint is an Lu uppercase letter, false if not. Returns null on failure.

Exemples

Exemple #1 Test de différents codepoint

<?php
var_dump
(IntlChar::isupper("A"));
var_dump(IntlChar::isupper("a"));
var_dump(IntlChar::isupper("Φ"));
var_dump(IntlChar::isupper("φ"));
var_dump(IntlChar::isupper("1"));
?>

L'exemple ci-dessus va afficher :

bool(true)
bool(false)
bool(true)
bool(false)
bool(false)

Voir aussi

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