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Function to generate random string in php_PHP tutorial

WBOY
WBOYOriginal
2016-07-13 17:10:17913browse

Introducing an article about the function that generates random encryption in PHP. If you need it, you can refer to it. It is a self-defined function and does not come with the system.

The code is as follows
 代码如下 复制代码

function encrypt_str( $TXT, $KEY )
{
        srand( ( double )microtime( ) * 1000000 );
        $ENCRYPT_KEY = md5( rand( 0, 32000 ) );
        $CTR = 0;
        $TMP = "";
        $I = 0;
        for ( ;    $I < strlen( $TXT );    ++$I    )
        {
                if ( $CTR == strlen( $ENCRYPT_KEY ) )
                {
                        $CTR = 0;
                }
                $TMP .= substr( $ENCRYPT_KEY, $CTR, 1 ).( substr( $TXT, $I, 1 ) ^ substr( $ENCRYPT_KEY, $CTR, 1 ) );
                ++$CTR;
        }
        return keyed_str( $TMP, $KEY );
}

function decrypt_str( $TXT, $KEY )
{
        $TXT = keyed_str( $TXT, $KEY );
        $TMP = "";
        $I = 0;
        for ( ;    $I < strlen( $TXT );    ++$I    )
        {
                $MD5 = substr( $TXT, $I, 1 );
                ++$I;
                $TMP .= substr( $TXT, $I, 1 ) ^ $MD5;
        }
        return $TMP;
}

function keyed_str( $TXT, $ENCRYPT_KEY )
{
        $ENCRYPT_KEY = md5( $ENCRYPT_KEY );
        $CTR = 0;
        $TMP = "";
        $I = 0;
        for ( ;    $I < strlen( $TXT );    ++$I    )
        {
                if ( $CTR == strlen( $ENCRYPT_KEY ) )
                {
                        $CTR = 0;
                }
                $TMP .= substr( $TXT, $I, 1 ) ^ substr( $ENCRYPT_KEY, $CTR, 1 );
                ++$CTR;
        }
        return $TMP;
}
Copy code
function encrypt_str( $TXT, $KEY )
{
srand((double)microtime() * 1000000);
$ENCRYPT_KEY = md5( rand( 0, 32000 ) );
         $CTR = 0;
         $TMP = "";
         $I = 0;
for ( ; $I < strlen( $TXT ); ++$I )
                                                                                      {
If ( $CTR == strlen( $ENCRYPT_KEY ) )
                                                                                                $CTR = 0;
                                                                                                                            $TMP .= substr( $ENCRYPT_KEY, $CTR, 1 ).( substr( $TXT, $I, 1 ) ^ substr( $ENCRYPT_KEY, $CTR, 1 ) );
                   ++$CTR;
           }
          return keyed_str( $TMP, $KEY );
} function decrypt_str( $TXT, $KEY )
{
$TXT = keyed_str( $TXT, $KEY );
         $TMP = "";
         $I = 0;
for ( ; $I < strlen( $TXT ); ++$I )
                                                                                      {
                    $MD5 = substr( $TXT, $I, 1 );
                                              ++$I;                       $TMP .= substr( $TXT, $I, 1 ) ^ $MD5;
                                                      return $TMP;
} function keyed_str( $TXT, $ENCRYPT_KEY )
{
          $ENCRYPT_KEY = md5( $ENCRYPT_KEY );
         $CTR = 0;
         $TMP = "";
         $I = 0;
for ( ; $I < strlen( $TXT ); ++$I )
                                                                                               If ( $CTR == strlen( $ENCRYPT_KEY ) )
                                                                                                 $CTR = 0;
                                                                                                                           $TMP .= substr( $TXT, $I, 1 ) ^ substr( $ENCRYPT_KEY, $CTR, 1 );
                   ++$CTR;
                                                      return $TMP;
}

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629683.htmlTechArticleIntroduces an article about the function that generates random encryption in php. If you need it, friends can refer to it. It is a customized one. The function does not come with the system. The code is as follows Copy code function encr...
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