PHP 5.6.36 Released

IntlChar::iscntrl

(PHP 7)

IntlChar::iscntrlCheck if code point is a control character

Beschreibung

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

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)

Parameter-Liste

codepoint

Der Integer-Wert des Codepoints (z.B. 0x2603 für U+2603 SNOWMAN) oder das Zeichen als UTF-8 String kodiert (z.B. "\u{2603}")

Rückgabewerte

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

Beispiele

Beispiel #1 Testen unterschiedlicher Codepoints

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

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

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

Siehe auch

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

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