What potential issues can arise when using fwrite in PHP to send data over a TcpSocket connection?

One potential issue that can arise when using fwrite in PHP to send data over a TcpSocket connection is that the data may not be sent in its entirety, leading to incomplete transmissions. To solve this issue, you can use a loop to continue writing the data until the entire message has been sent. 

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_connect($socket, '127.0.0.1', 8080);

$data = "Hello, World!";
$totalBytes = strlen($data);
$totalSent = 0;

while ($totalSent < $totalBytes) {
    $bytesSent = socket_write($socket, substr($data, $totalSent));
    if ($bytesSent === false) {
        // handle error
        break;
    }
    $totalSent += $bytesSent;
}

socket_close($socket);

Keywords

fwrite PHP TcpSocket data transmission potential errors

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