PHP | mysqli_stmt_field_count() 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_stmt_field_count() Function.

The built-in PHP mysqli_stmt_field_count() function accepts a statement object as a parameter and returns the number of fields in the result of the given statement.

Syntax

Following below is the syntax to use this function -

mysqli_stmt_field_count($stmt);

READ: PHP | mysqli_stmt_affected_rows() Function

Parameter Details

Sr.No	Parameter & Description
1	stmt(Mandatory) This is an object representing a statement executing an SQL query.

Return Value

This built-in PHP function returns an integer value indicating the number of rows in the resultset returned by the statement.

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 demonstrates the usage of the built-in PHP mysqli_stmt_field_count() function (in a procedural style) -

<?php
   $con = mysqli_connect("localhost", "root", "password", "mydb");

   mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
   print("Table Created.....\n");
   mysqli_query($con, "INSERT INTO myplayers values(1, 'Kennedy', 'Nkpara', 'PortHarcourt', 'Nigeria')");
   mysqli_query($con, "INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')");
   mysqli_query($con, "INSERT INTO myplayers values(3, 'Queen', 'Douglas', 'Texas', 'UnitedStates')");
   print("Record Inserted.....\n");

   //Retrieving the contents of the table
   $stmt = mysqli_prepare($con, "SELECT * FROM myplayers");

   //Executing the statement
   mysqli_stmt_execute($stmt);

   //Field Count 
   $count = mysqli_stmt_field_count($stmt);
   print("Field Count: ".$count);

   //Closing the statement
   mysqli_stmt_close($stmt);

   //Closing the connection
   mysqli_close($con);
?>

Output

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

Table Created.....
Record Inserted.....
Field Count: 5

Example2

In an object oriented style the syntax of this function is $stmt->field_count(); Following is the example of this function in an object oriented style -

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

   $con -> query("CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
   print("Table Created.....\n");
   $con -> query("INSERT INTO myplayers values(1, 'Kennedy', 'Nkpara', 'PortHarcourt', 'Nigeria')");
   $con -> query("INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')");
   print("Records Inserted.....\n");

   //Retrieving Data
   $stmt = $con ->prepare("SELECT First_Name, Last_Name, Country FROM myplayers");

   //Executing the statement
   $stmt->execute();

   //Field Count
   $count = $stmt->field_count;
   print("Field Count: ".$count);

   //Closing the statement
   $stmt->close();

   //Closing the connection
   $con->close();
?>

Output

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

Table Created.....
Records Inserted.....
Field Count: 3

READ: PHP | mysqli_stmt_fetch() 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 PHP mysqli_stmt_free_result() Function.

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