PHP Unicode代码点到字符

Question

我想将 Unicode 代码点转换为字符。这是我尝试过的:

$point = dechex(127468);  // 1f1ec

echo "\u{1f1ec}";         // this works
echo "\u{$point}";        // this outputs '\u1f1ec'
echo "\u{{$point}}";      // Parse error: Invalid UTF-8 codepoint escape sequence
echo "\u\{{$point}\}";    // outputs \u\{1f1ec\}
echo "\u{". $point ."}";  // Parse error; same as above

Answer 1

您不需要将整数转换为十六进制字符串，而是使用 IntlChar::chr :

echo IntlChar::chr(127468);

直接来自 IntlChar::chr 的文档:

Return Unicode character by code point value