IntlChar::isupper

(PHP 7, PHP 8)

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

Descrição

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

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

Nota:

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

Parâmetros

codepoint

O valor int do ponto de código (por exemplo, 0x2603 para U+2603 SNOWMAN) ou o caractere codificado como uma string UTF-8 (por exemplo, "\u{2603}").

Valor Retornado

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

Exemplos

Exemplo #1 Testando diferentes pontos de código

<?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"));
?>

O exemplo acima produzirá:

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

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