


How to implement Socket creation and monitoring in php, phpsocket creation and monitoring_PHP tutorial
Socket creation and monitoring implementation method in php, phpsocket creation and monitoring
The example in this article describes the implementation method of Socket creation and monitoring in php. Share it with everyone for your reference. The details are as follows:
Here is an example of socket-related functions in PHP, such as creating a Socket, accepting a socket connection, writing a Socket and initializing the connection. The specific example code is as follows:
$port=1000; //Define port
$socket=socket_create(af_inet,sock_stream,sol_tcp); //Create socket
$bind=socket_bind($socket,$ip,$prot); //Bind a socket
$listen=socket_listen($socket); //Listen to socket
$msg=socket_accept($socket); //Accept a socket connection
$welcome="Welcome to php service/n"; //Define string
socket_write($msg,$welcome,strlen($welcome)); //Write a socket
socket_close($socket); //Close socket
*/
$ip="127.0.0.1"; //Define ip address
$port=1000; //Define port
$socket=socket_create(af_inet,sock_stream,sol_tcp); //Create socket
socket_clear_error($socket); //Clear the socket error message
socket_close($socket); //Close socket
/*
*/
$sockets=array(); //Define an array
/*Create a pair of sockets and store them in an array*/
if(!socket_create_pair(af_unix,sock_stream,0,$sockets)) //If the socket is not successfully created
{
echo socket_strerror(socket_last_error()); //Output error message
}
/*Use the created socket to send and receive information*/
if(!socket_write($sockets[0],"abcdef123n",strlen("abcdef123n"))) //If the socket write fails
{
cho socket_strerror(socket_last_error()); //Output error message
}
if(!$data=socket_read($sockets[1],strlen("abcdef123n"),php_binary_read)) //If reading information fails
{
echo socket_strerror(socket_last_error()); //Output error message
}
var_dump($data); //Output socket data information
/*Close socket*/
socket_close($sockets[0]); //Close socket1
socket_close($sockets[1]); //Close socket2
/*
*/
$ip="127.0.0.1"; //Define ip address
$port=1000; //Define port
$socket=socket_create(af_inet,sock_stream,sol_tcp); //Create socket
socket_set_nonblock($socket); //Set the non-locked state
socket_connect($socket,$ip,$port); //Initialize connection
socket_set_block($sock); //Lock socket
switch(socket_select($r=array($socket),$w=array($socket),$f=array($socket),5))
{
case 2:
echo "Connection refused! n";
Break;
case 1:
echo "Successfully connected n";
Break;
case 0:
echo "Connection timeout n";
Break;
}
/*
*/
/*The following code defines a socket listening class*/
class socketlistener extends socket
{
function __construct($port=null) //Define __construct method
{
$this->stream=@socket_create_listen($port?$port:port); //Open the port to accept connections
}
function isactive() //Define isactive method
{
If($this->stream) //If there is a connection
{
return true; }
else else //No connection
{
return false; }
}
}
I hope this article will be helpful to everyone’s PHP programming design.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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