IntlChar::isblank()

版本：php7

(PHP 7)

Check if code point is a "blank" or "horizontal space" character

说明

publicstaticIntlChar::isblank(mixed $codepoint): bool

Determines whether the specified code point is a "blank" or "horizontal space", a character that visibly separates words on a line.

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).

参数

$codepoint

The integer codepoint value(e.g.0x2603forU+2603 SNOWMAN), or the character encoded as a UTF-8 string(e.g."u{2603}")

返回值

Returns TRUE if$codepointis either a "blank" or "horizontal space" character,FALSE if not.

范例

Testing different code points

<?php
var_dump(IntlChar::isblank("A"));
var_dump(IntlChar::isblank(" "));
var_dump(IntlChar::isblank("\t"));
?>

以上例程会输出：

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

参见

• IntlChar::isspace() Check if code point is a space character
• IntlChar::isJavaSpaceChar() Check if code point is a space character according to Java
• IntlChar::isUWhiteSpace() Check if code point has the White_Space Unicode property
• IntlChar::isWhitespace() Check if code point is a whitespace character according to ICU