Master to, about the socket in PHP problem!

A hardware to send data to the server port (packet soft to get the correct 16), the data captured by the capture software is normal (16), however, through the socket of PHP data (through the conversion is also 16 binary, not converted is garbled), the following code, Please help the master to see where the wrong. Why PHP socket gets the data and grab the package software to get the same

The correct code obtained by the catch package software is (16 binary): FA, FF AA, 0B, xx A3
Data obtained via the PHP socket (via Dechex (), Ord () converted, and software fetch is not the same, is wrong): FA 7 2 FA 2 0 9 F6 4 2c, FA 1

Paste the following PHP socket code:

 = $MAX _users) {$reject = "Server full.                                   Try again later.\n ";                }//Put the current client connection as Socket_select select $connections [$i] = $newconn;                               Enter the connection resource cache container $writefds [$i] = $newconn;                Not connected properly if ($reject) {$close [$i] = true;                                  } else {echo "Welcome to the PHP Chat server!\n";                }//initializes the cache container for the current connection read content $input [$i] = "";            Continue            }//Client connection $i = (int) $rfd;            Read $tmp = @socket_read ($RFD, Php_normal_read);                if (! $tmp) {//Cannot read content print "Connection closed on socket $i \ n";            Close ($i);    Continue            } $input [$i]. = $tmp;            $tmp = substr ($input [$i],-1);                /*if ($tmp! = "\ r" && $tmp! = "\ n") {//no end of line, more data coming            Continue            }*/$line = Trim ($input [$i]);            $input [$i] = ""; Echo ' Client >> '. $line. "  \ r \ n "; $data =str_split ($line); Print_r ($data); echo "\ r \ n";//$data = explode ("\ t", $line);//$data =str_split ($data); foreach ($data as $v) {echo Dechex (ord ($v)). "  \ t "; } echo "\ r \ n"; Socket_getpeername ($connections [$i],& $remoteIP,& $remotePort); Echo $remoteIP. " \ r \ n "Echo $remotePort." \ r \ n ";//$data =str_split ($buffer);//print_r ($data); $str =" \xfa\x01\x01\xff\xaa\xaa\x00\x01\x00\x00\x00\x00\x00\ X01 ";        Socket_send ($connections [$i], $str, strlen ($STR), 0);            } foreach ($writefds as $wfd) {$i = (int) $wfd;        $w = Socket_write ($wfd, "Hello"); }}}function Close ($i) {Global $connectioNS, $input, $close;    Socket_shutdown ($connections [$i]);    Socket_close ($connections [$i]);    Unset ($connections [$i]);       Unset ($input [$i]); Unset ($close [$i]); >

Reply to discussion (solution)

Fully simulate your site and code

$str = "\xfa\x01\x01\xff\xaa\xaa\x00\x01\x00\x00\x00\x00\x00\x01"; $line = $str; $data = Str_split ($line); foreach ($ Data as $v) {  echo Dechex (ord ($v)). " \ t ";}

Get
FA 1 1 ff AA AA 0 1 0 0 0 0 0 1

I don't see what the difference is.

Fully simulate your site and code

PHP Code

$str = "\xfa\x01\x01\xff\xaa\xaa\x00\x01\x00\x00\x00\x00\x00\x01";

$line = $str;
$data = Str_split ($line);
foreach ($data as $v) {
Echo Dechex (Ord ($v)). " \ t ";
}

Get
F......

You are the simulation of the data sent to the hardware is normal, my demand is: hardware data I accept the socket is not normal, through the packet capture tool to get the data is correct (FA, FF AA, 0B), and the data with the socket, in DOS The next is garbled, I passed Dechex (ORD (obtained data)) after conversion is: FA 7 2 FA 2 0 9 F6 4 2c in FA 1 (is wrong), I want to get the same data as the Grab kit tool (ie: FA) FF AA 03 00 01 00 0 B xx A3)

You have $line = Trim ($input [$i]); Is that the data you received?
1, remove trim, otherwise the incoming data may be truncated
2, because is binary data, you echo Base64_encode ($input [$i]); Post the results

You have $line = Trim ($input [$i]); Is that the data you received?
1, remove trim, otherwise the incoming data may be truncated
2, because is binary data, you echo Base64_encode ($input [$i]); Post the results

+gclavocaan2bcyi+geb+v/6aqh/qqoaaqaaaaaaafobaf+qqgabaaaa
This is the data that gets

$s = base64_decode (' +gclavocaan2bcyi+geb+v/6aqh/qqoaaqaaaaaaafobaf+qqgabaaaa ');p rint_r (Unpack (' H* ', $s));//or for ($ i=0; $i
  
  
 
  
  

  
You have $line = Trim ($input [$i]); Is that the data you received?
1, remove trim, otherwise the incoming data may be truncated
2, because is binary data, you echo Base64_encode ($input [$i]); Post the results
  
  
Is the data captured by the Grab tool (the correct data), how the 16-based data that is circled in the Shadow section is converted to the data referred to by the arrows, and how to turn back to the 16 binary
  
  
  
[img=http://bbs.php100.com/attachment/mon_1208/18_219521_355456b7c8c862b.jpg?93] [/IMG]
  
 
  
You're getting binary data, what are you going to do?
  
Those that you have in the red line are the hexadecimal representations of the data.
One byte is 8 bits, 1 hexadecimal digits are 4 bits
2 hexadecimal digits represent exactly one byte of the content.
 
  
The data I am now receiving with the PHP socket is the data that the arrows refer to (and placed in the variable $ A), and I now want to convert it to the data (that is, 16 binary) of the shadow part of the circle in the diagram.
 
  
  

  
You're getting binary data, what are you going to do?
   
Those that you have in the red line are the hexadecimal representations of the data.
One byte is 8 bits, 1 hexadecimal digits are 4 bits
2 hexadecimal digits represent exactly one byte of the content.
  
  
  
  
The data I am now receiving with the PHP socket is the data that the arrows refer to (and placed in the variable $ A), and I now want to convert it to the data (that is, 16 binary) of the shadow part of the circle in the diagram.
  
 
  
Didn't I #6 give you the code?
 
  
It feels a little messy, sorry.
 
  
Do you have an escape character?
 
  
  

  
Didn't I #6 give you the code?
  
  
  
  
Now it is possible to get the code, but 3 16 less data
  
  
  
The code obtained is: FA072502FA020009F6042C88FA0101FAFFFA0101FFAA030001000B00
  
  
  
The clutch is obtained: FA, FF AA, 0B, xx A3
  
  
  
That is, the less the XX A3
  
  
  
 
  
 
  
  

  
 
    
  
  
Can perfectly solve your problem ... I just saw this question of yours.
  
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