fromCharCode vs chr

fromCharCode vs chr

echo off

set "fn=%*"

set php=d:/www/php5/php.exe

cls

echo.

%php% %fn%

pause>null

====================

JS 默认编码是 UTF-16 ,PHP 中对数据的处理编码是 UTF-8 ，对 ASCII 无所谓，但对汉字就影响大了，所以必须做转码

<?php

$encKey="12";

$str="1234abcASDF/?廣告服務    风《》<>您好";

echo 'PHP:'.$str."\r\n<br>";

$str=utf82Unicode($str);

$ex=encrypt_string($str);

function encrypt_string($input)

{

    global $encKey;

    $line = "";

    for($i = 0; $i < strlen($input); $i++) {

        $line .= chr(ord($input[$i]) + $encKey);//ord()返回字符的 ASCII 值。十进制

    }                                           //chr()从指定的 ASCII 值返回字符。

    return $line;

}

function deccrypt_string($input)

{

    global $encKey;

    $line = "";

    for($i = 0; $i < strlen($input); $i++){

        $line .= chr(ord($input[$i]) - $encKey);

    }

    return $line;

}

function Unicode2Utf8($str){

preg_match_all("/(\d{2,5})/", $str,$a);

$a = $a[0];

$utf = '';

foreach ($a as $dec){

if ($dec < 128) {

$utf .= chr($dec);

} else if ($dec < 2048) {

$utf .= chr(192 + (($dec - ($dec % 64)) / 64));

$utf .= chr(128 + ($dec % 64));

} else {

$utf .= chr(224 + (($dec - ($dec % 4096)) / 4096));

$utf .= chr(128 + ((($dec % 4096) - ($dec % 64)) / 64));

$utf .= chr(128 + ($dec % 64));

}

}

return $utf;

}

function utf82Unicode($str=""){

$unicode = array();

$values = array();

$lookingFor = 1;

for ($i = 0; $i < strlen($str); $i++ ) {

$thisValue = ord($str[$i]);

if ($thisValue < 128) {

$unicode[] = $thisValue;

} else {

if ( count( $values ) == 0 ) {

$lookingFor = ( $thisValue < 224 ) ? 2 : 3;

}

$values[] = $thisValue;

if ( count( $values ) == $lookingFor ) {

$number = ( $lookingFor == 3 ) ?

( ( $values[0] % 16 ) * 4096 ) + ( ( $values[1] % 64 ) * 64 ) + ( $values[2] % 64 ):

( ( $values[0] % 32 ) * 64 ) + ( $values[1] % 64 );

$unicode[] = $number;

$values = array();

$lookingFor = 1;

}

}

}

$return = '';

foreach($unicode as $val){

$return .= '&#'.$val.';';

}

return $return;

}

?>

JS:

<script>

var e="<? echo $ex; ?>";

var s= decrypt_string(e);

document.write(s);

function decrypt_string(estr){

var key = 12;

var str="";

var n = estr.length;

var i;

for(i=0; i<n; i++) {

dstr =estr.charCodeAt(i) - key;

str+=String.fromCharCode(dstr);

}

return str;

}

</script>