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用PHP开展简单的字符加密

WBOY
WBOYOriginal
2016-06-13 11:58:35837browse

用PHP进行简单的字符加密

原作者:http://www.verydemo.com/demo_c116_i52209.html

无事可做,想试试加密,于是就使用了自己熟悉的PHP来写了...

原理:

把字符转化成ASCII码,然后对ASCII码进行换算,把结果再转化成字符,加密完成.

?

实现:


输入要加密的字符:

?

error_reporting(255);
if ( isset($val) )
{
?//进行加密
??for($i=0; $i
?{
??$c = $value[$i];
??$c = ord($c);
??if ( $c>31 && $c??{
???$c = $c+20;
???print( "加密前的字符: ". $val );
???print( "
加密后的字符: ". chr($c) );
???print( "

");
??}?
??elseif ( $c>106 && $c??{
???$c = $c-75;
???print( "加密前的字符: ". $val );
???print( "
加密后的字符: ". chr($c) );
???print( "

");??
??}
?}
}
else
{
?print("请输入你要加密的字符");
}

?>

对asc进行转换的过程中要注意一些问题,比如asc是从0-127,那么进行转化的时候就不能出现大于127或者小于0的asc,这个要控制好,最好成绩自己列张表看看.

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