IntlChar::isprint

(PHP 7, PHP 8)

IntlChar::isprint — Check if code point is a printable character

说明

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

Determines whether the specified code point is a printable character.

true for general categories other than "C" (controls).

参数

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}")

返回值

Returns true if codepoint is a printable character, false if not. Returns null on failure.

范例

示例 #1 Testing different code points

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

以上例程会输出：

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

参见

  • IntlChar::iscntrl() - Check if code point is a control character
  • IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT