IntlChar::isblank
Check if code point is a "blank" or "horizontal space" character
Description
public static boolnull IntlChar::isblank(intstring $codepoint)
The following are equivalent definitions:
-
true for Unicode White_Space characters except for "vertical space controls" where "vertical space controls" are
the following characters: U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS)
-
true for U+0009 (TAB) and characters with general category "Zs" (space separators) except Zero Width Space (ZWSP, U+200B).
Parameters
-
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}")
Return Values
Returns true if
codepoint is either a "blank" or "horizontal space" character, false if not. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::isblank("A"));
var_dump(IntlChar::isblank(" "));
var_dump(IntlChar::isblank("\t"));
?>
The above example will output:
bool(false)
bool(true)
bool(true)
See Also
- IntlChar::isspace
- IntlChar::isJavaSpaceChar
- IntlChar::isUWhiteSpace
- IntlChar::isWhitespace