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php 汉字转化成 二进制 十进制 十六进制 数目字

Jun 13, 2016 am 10:49 AM
bin echo str

php 汉字转化成 二进制 十进制 十六进制 数字

<?php/** * 把一个汉字转为unicode的通用函数,不依赖任何库,和别的自定义函数,但有条件 * 条件:本文件以及函数的输入参数应该用utf-8编码,不然要加函数转换 * 其实亦可轻易编写反向转换的函数,甚至不局限于汉字,奇怪为什么PHP没有现成函数 * @author xieye * * @param {string} $word 必须是一个汉字,或代表汉字的一个数组(用str_split切割过) * @return {string} 一个十进制unicode码,如4f60,代表汉字 “你” * * @example    echo "你 ".getUnicodeFromOneUTF8("你");    echo "<br />";    echo "好 ".getUnicodeFromOneUTF8("好");    echo "<br />";    echo "你好 ".getUnicodeFromOneUTF8("你好");    echo "<br />";    echo "你好吗 ".getUnicodeFromOneUTF8("你好吗");    你 20320    好 22909    你好 251503099357000    你好吗 4.21952182258E+21 */function getUnicodeFromOneUTF8($word) {    //获取其字符的内部数组表示,所以本文件应用utf-8编码!    if (is_array( $word))        $arr = $word;    else        $arr = str_split($word);    //此时,$arr应类似array(228, 189, 160)    //定义一个空字符串存储    $bin_str = '';    //转成数字再转成二进制字符串,最后联合起来。    foreach ($arr as $value)        $bin_str .= decbin(ord($value));    //此时,$bin_str应类似111001001011110110100000,如果是汉字"你"    //正则截取    $bin_str = preg_replace('/^.{4}(.{4}).{2}(.{6}).{2}(.{6})$/','$1$2$3', $bin_str);        //此时, $bin_str应类似0100111101100000,如果是汉字"你"    return bindec($bin_str);    //返回类似20320, 汉字"你"    //return dechex(bindec($bin_str));    //如想返回十六进制4f60,用这句}echo "你 ".getUnicodeFromOneUTF8("你");echo "<br />";echo "好 ".getUnicodeFromOneUTF8("好");echo "<br />";echo "你好 ".getUnicodeFromOneUTF8("你好");echo "<br />";echo "你好吗 ".getUnicodeFromOneUTF8("你好吗");exit;?>
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