PHP | mysqli_thread_id() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP mysqli_thread_id() Function.

The built-in PHP mysqli_thread_id() function accepts a connection object and returns the thread id of the given connection.

Syntax

Following below is the syntax to use this function -

mysqli_thread_id($con);

READ: PHP | mysqli_set_charset() Function

Parameter Details

Sr.No	Parameter & Description
1	con(Mandatory) This is an object representing a connection to MySQL Server.

Return Value

It returns an integer value representing the thread id of the given connection.

PHP Version

This PHP function was first introduced in PHP version 5 and works in all the later versions.

Example1

The following below is an example which shows the usage of PHP mysqli_thread_id() function (in a procedural style) -

<?php
   //Creating the connection
   $con = mysqli_connect("localhost","root","password","test");

   //Id of the current thread
   $id = mysqli_thread_id($con);
   print("Current thread id: ".$id);
?>

Output

When the above code is executed, it will produce the following result -

Current thread id: 55

Example2

In an object oriented style the syntax of this function is $con->thread_id; The following is an example of this PHP function in object oriented style -

<?php
   //Creating the connection
   $con = new mysqli("localhost","root","password","test");

   //Current thread id
   $id = $con->thread_id;

   print("Current thread id: ".$id);
?>

Output

When the above code is executed, it will produce the following result -

Current thread id: 55

Example3

Following is another example of the PHP mysqli_thread_id() function. It retries the I'd of the current thread and kills it $minus;

<?php
   //Creating the connection
   $con = mysqli_connect("localhost","root","password","test");

   $id = mysqli_thread_id($con);

   mysqli_kill($con, $id);

   $res = mysqli_query($con, "CREATE TABLE Sample (name VARCHAR(255))");

   if($res){
      print("Successful.....");
   }else{
      print("Failed......");
   }
?>

Output

When the above code is executed, it will produce the following result -

Failed.....

Example4

In an object oriented style the syntax of this function is $con->kill(); The following below is an example of this built-in function in an object oriented style $minus;

<?php
   $connection_mysql=mysqli_connect("localhost","root","password","mydb");
   
   if (mysqli_connect_errno($connection_mysql)){
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
   }
   
   $t_id = mysqli_thread_id($connection_mysql);
   
   $res = mysqli_thread_id($connection_mysql,$t_id);
   
   if($res){
	   print("Thread terminated successfully......");
   }
?>

Output

When the above code is executed, it will produce the following result -

Thread terminated successfully......

READ: PHP | mysqli_stmt_init() Function

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the mysqli_thread_safe() Function in PHP.

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