IntlChar::isIDIgnorable

(PHP 7, PHP 8)

IntlChar::isIDIgnorable — Check if code point is an ignorable character

Description

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

Determines if the specified character should be regarded as an ignorable character in an identifier.

true for characters with general category "Cf" (format controls) as well as non-whitespace ISO controls (U+0000..U+0008, U+000E..U+001B, U+007F..U+009F).

Note:

Note that Unicode just recommends to ignore Cf (format controls).

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 ignorable in identifiers, false if not. Returns null on failure.

Exemples

Exemple #1 Test de différents codepoint

<?php
var_dump(IntlChar::isIDIgnorable("A"));
var_dump(IntlChar::isIDIgnorable(" "));
var_dump(IntlChar::isIDIgnorable("\u{007F}"));
?>

L'exemple ci-dessus va afficher :

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

Voir aussi

  • IntlChar::isIDStart() - Check if code point is permissible as the first character in an identifier
  • IntlChar::isIDPart() - Check if code point is permissible in an identifier
  • IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT