PHP解密Unicode及Escape加密字符串函数 | LsevenTT博客-站群哥
   

LsevenTT博客-站群哥

认真你就输了

PHP解密Unicode及Escape加密字符串函数

<?php
function uni_decode($s) {
	preg_match_all('/\&\#([0-9]{2,5})\;/', $s, $html_uni);
	preg_match_all('/[\\\%]u([0-9a-f]{4})/ie', $s, $js_uni);
	$source = array_merge($html_uni[0], $js_uni[0]);
	$js = array();
	for($i=0;$i<count($js_uni[1]);$i++) {
		$js[] = hexdec($js_uni[1][$i]);
	}
	$utf8 = array_merge($html_uni[1], $js);
	$code = $s;
	for($j=0;$j<count($utf8);$j++) {
		$code = str_replace($source[$j], unicode2utf8($utf8[$j]), $code);
	}
	return $code;//$s;//preg_replace('/\\\u([0-9a-f]{4})/ie', "chr(hexdec('\\1'))",  $s);
}

function unicode2utf8($c) {
	$str="";
	if ($c < 0x80) {
		 $str.=chr($c);
	} else if ($c < 0x800) {
		 $str.=chr(0xc0 | $c>>6);
		 $str.=chr(0x80 | $c & 0x3f);
	} else if ($c < 0x10000) {
		 $str.=chr(0xe0 | $c>>12);
		 $str.=chr(0x80 | $c>>6 & 0x3f);
		 $str.=chr(0x80 | $c & 0x3f);
	} else if ($c < 0x200000) {
		 $str.=chr(0xf0 | $c>>18);
		 $str.=chr(0x80 | $c>>12 & 0x3f);
		 $str.=chr(0x80 | $c>>6 & 0x3f);
		 $str.=chr(0x80 | $c & 0x3f);
	}
	return $str;
}

$str='%u5927%u5BB6%u597D%uFF0C<br />\u8FD9\u662F\u6D4B\u8BD5\u6587\u672C\uFF01';
echo uni_decode($str); // 这是测试文本!


相关阅读

评论被关闭