(PHP 7 >= 7.2.0, PHP 8)
mb_chr — Return character by Unicode code point value
$codepoint
, string|null $encoding = null
) : string|falseReturns a string containing the character specified by the Unicode code point value, encoded in the specified encoding.
This function complements mb_ord().
codepoint
A Unicode codepoint value, e.g. 128024 for U+1F418 ELEPHANT
encodingencoding
参数为字符编码。如果省略或是 null，则使用内部字符编码。
A string containing the requested character, if it can be represented in the specified
encoding 或者在失败时返回 false.
| 版本 | 说明 |
|---|---|
| 8.0.0 |
现在 encoding 可以为 null。
|
Example #1 Testing different code points
<?php
$values = [65, 63, 0x20AC, 128024];
foreach ($values as $value) {
var_dump(mb_chr($value, 'UTF-8'));
var_dump(mb_chr($value, 'ISO-8859-1'));
}
?>
以上例程会输出：
string(1) "A" string(1) "A" string(1) "?" string(1) "?" string(3) "�" bool(false) string(4) "??" bool(false)