IntlChar::isalnum

(PHP 7, PHP 8)

IntlChar::isalnum — Check if code point is an alphanumeric character

Descrizione

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

Determines whether the specified code point is an alphanumeric character (letter or digit). true for characters with general categories "L" (letters) and "Nd" (decimal digit numbers).

Elenco dei parametri

codepoint: The int codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

Valori restituiti

Returns true if codepoint is an alphanumeric character, false if not. Returns null on failure.

Esempi

Example #1 Testing different code points

<?php
var_dump(IntlChar::isalnum("A"));
var_dump(IntlChar::isalnum("1"));
var_dump(IntlChar::isalnum("\u{2603}"));
?>

Il precedente esempio visualizzerà:

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

Vedere anche:

IntlChar::isalpha() - Check if code point is a letter character
IntlChar::isdigit() - Check if code point is a digit character
ctype_alnum() - Controlla i caratteri alfanumerici

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