IntlChar::iscntrl

(PHP 7)

IntlChar::iscntrl — Check if code point is a control character

Description

public static IntlChar::iscntrl ( mixed $codepoint ) : bool

Determines whether the specified code point is a control character.

A control character is one of the following:

  • ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
  • IntlChar::CHAR_CATEGORY_CONTROL_CHAR (Cc)
  • IntlChar::CHAR_CATEGORY_FORMAT_CHAR (Cf)
  • IntlChar::CHAR_CATEGORY_LINE_SEPARATOR (Zl)
  • IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR (Zp)

Liste de paramètres

codepoint

La valeur codepoint de type integer (i.e. 0x2603 pour U+2603 SNOWMAN), ou le caractère encodé en UTF-8 de type string (i.e. "\u{2603}")

Valeurs de retour

Returns TRUE if codepoint is a control character, FALSE if not.

Exemples

Exemple #1 Test de différents codepoint

<?php
var_dump(IntlChar::iscntrl("A"));
var_dump(IntlChar::iscntrl(" "));
var_dump(IntlChar::iscntrl("\n"));
var_dump(IntlChar::iscntrl("\u{200e}"));
?>

L'exemple ci-dessus va afficher :

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

Voir aussi

  • IntlChar::isprint() - Check if code point is a printable character
  • IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT