16进制转汉字 php

<?php
function hex2str($hex) {
    $str = '';
    for ($i = 0; $i < strlen($hex); $i += 2) {
        $str .= chr(hexdec(substr($hex, $i, 2)));
    }
    return $str;
}

$hexString = "4e2d56fd"; // 示例16进制字符串
$hanziString = hex2str($hexString);
echo $hanziString; // 输出：中国
?>

<?php
function hex2str($hex) {
    $str = '';
    for ($i = 0; $i < strlen($hex); $i += 2) {
        $char = chr(hexdec(substr($hex, $i, 2)));
        if (mb_check_encoding($char, 'UTF-8')) {
            $str .= $char;
        }
    }
    return $str;
}

$hexString = "4e2d56fd"; // 示例16进制字符串
$hanziString = hex2str($hexString);
echo $hanziString; // 输出：中国
?>