(PHP 7, PHP 8)
IntlChar::isdefined — Check whether the code point is defined
$codepoint
): ?boolDetermines whether the specified code point is "defined", which usually means that it is assigned a character.
true
for general categories other than "Cn" (other, not assigned).
Nota:
Note that non-character code points (e.g., U+FDD0) are not "defined" (they are Cn), but surrogate code points are "defined" (Cs).
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}"
)
Returns true
if
codepoint
is a defined character, false
if not. Returns null
on failure.
Exemplo #1 Testando diferentes pontos de código
<?php
var_dump(IntlChar::isdefined("A"));
var_dump(IntlChar::isdefined(" "));
var_dump(IntlChar::isdefined("\u{FDD0}"));
?>
O exemplo acima produzirá:
bool(true) bool(true) bool(false)