PHP uses Socket to send and receive hexadecimal data.

The following is an analysis of the implementation code for sending and receiving hexadecimal data through Socket in PHP. For more information, see

The following is an analysis of the implementation code for sending and receiving hexadecimal data through Socket in PHP. For more information, see

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The Code is as follows:

$ SendStr = '30 32 30 34 03 30 33'; // hexadecimal data

$ SendStrArray = str_split (str_replace ('','', $ sendStr), 2); // convert hexadecimal data into two arrays.

$ Socket = socket_create (AF_INET, SOCK_STREAM, getprotobyname ("tcp"); // create a Socket

If (socket_connect ($ socket, "192.168.1.100", 8080) {// connection
For ($ j = 0; $ j <count ($ sendStrArray); $ j ++ ){
Socket_write ($ socket, chr (hexdec ($ sendStrArray [$ j]); // send group-by-group data
}

$ ReceiveStr = "";
$ ReceiveStr = socket_read ($ socket, 1024, PHP_BINARY_READ); // receives data in binary mode.
$ ReceiveStrHex = bin2hex ($ receiveStr); // convert binary data into hexadecimal data

Echo "client:". $ receiveStrHex;
}
Socket_close ($ socket); // close the Socket
?>