PHP Conference Nagoya 2025

Normalizer::isNormalized

normalizer_is_normalized

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

Normalizer::isNormalized -- normalizer_is_normalized Checks if the provided string is already in the specified normalization form

Beschreibung

Objektorientierter Stil

public static Normalizer::isNormalized(string $string, int $form = Normalizer::FORM_C): bool

Prozeduraler Stil

normalizer_is_normalized(string $string, int $form = Normalizer::FORM_C): bool

Checks if the provided string is already in the specified normalization form.

Parameter-Liste

string

The input string to normalize

form

One of the normalization forms.

Rückgabewerte

true if normalized, false otherwise or if there an error

Beispiele

Beispiel #1 normalizer_is_normalized() example

<?php
$char_A_ring
= "\xC3\x85"; // 'LATIN CAPITAL LETTER A WITH RING ABOVE' (U+00C5)
$char_combining_ring_above = "\xCC\x8A"; // 'COMBINING RING ABOVE' (U+030A)

$char_orig = 'A' . $char_combining_ring_above;
$char_norm = normalizer_normalize( 'A' . $char_combining_ring_above, Normalizer::FORM_C );

echo (
normalizer_is_normalized($char_orig, Normalizer::FORM_C) ) ? "normalized" : "not normalized";
echo
'; ';
echo (
normalizer_is_normalized($char_norm, Normalizer::FORM_C) ) ? "normalized" : "not normalized";
?>

Beispiel #2 OO example

<?php
$char_A_ring
= "\xC3\x85"; // 'LATIN CAPITAL LETTER A WITH RING ABOVE' (U+00C5)
$char_combining_ring_above = "\xCC\x8A"; // 'COMBINING RING ABOVE' (U+030A)

$char_orig = 'A' . $char_combining_ring_above;
$char_norm = Normalizer::normalize( 'A' . $char_combining_ring_above, Normalizer::FORM_C );

echo (
Normalizer::isNormalized($char_orig, Normalizer::FORM_C) ) ? "normalized" : "not normalized";
echo
'; ';
echo (
Normalizer::isNormalized($char_norm, Normalizer::FORM_C) ) ? "normalized" : "not normalized";
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

not normalized; normalized

Siehe auch

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