Conditional Rendering in React Complete Guide with Examples 2026

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  Conditional Rendering in React Conditional Rendering is one of the most useful concepts in React. It means showing different content on the screen depending on a condition. For example: If a user is logged in → show Logout If a user is not logged in → show Login If a student has passed → show Congratulations If a product is available → show Buy Now If data is loading → show Loading... React does not have a separate if rendering tag. Instead, we use normal JavaScript conditions such as if, the ternary operator, &&, and switch to decide what should appear in the UI.
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registration form in php

    PHP Registration form 

registration form in php


Registration Form

(USE TO HTML LANGUAGE)

Example ::-




<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="
width=device-width, initial-scale=1.0">
    <title>Document</title>
  </head>
<body class="">
   
        <form action="index.php" method="post">
            <h1>Register Here</h1>
      <label>Name</label>
    <input type="text" name="unm" required><br>

       <label>Mobile No</label> <input
type="text" name="umob" required><br>

            <label>Email Address</label>
  <input type="email" name="uem" required><br>

            <label>Password</label>
 <input type="password" name="upwd"required><br>


           <select class="form-control mt-2"
name="uque" required>
                <option disabled selected>
--select sequrity Quetion--</option><br>
               
                <option class=
"What is your hobby?">What Is Your Hobby ?
</option>
            <option class="What is your
favourite color?">What is your
Favourite color?</option>
        <option class="What is your School
name?">What is your School name?</option>
        </select><br>

       
        <label>Answer</label>
        <input type="text" name="uans"
class="form-control " required> <br>
     

       

        <input type="submit" value="Register"
        name="b1">
       
        <a href="login.php" >
            Already Have an Account?</a>
   
    </form>
    </div>
   
</body>
</html>

Registration Form

Output

registration form (use html) output

Registration Form 

Example ::-

(Use to Bootstrap language )


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet"
href="css/bootstrap.css">
</head>
<body class="">
    <div class="col-md-4 bg-white shadow-lg
mx-auto mt-4 p-3">
        <form action="index.php" method="post">
            <h1 class="text-primary">Register
Here</h1>
            <label>Name</label>
            <input type="text" name="unm"
class="form-control" required>

            <label>Mobile No</label>
            <input type="text" name="umob"
class="form-control" required>

            <label>Email Address</label>
            <input type="email" name="uem"
class="form-control" required>

            <label>Password</label>
            <input type="password" name="upwd"
class="form-control" required>


           <select class="form-control mt-2"
name="uque" required>
                <option disabled selected>
--select sequrity Quetion--</option>
               
                <option class="
What is your hobby?">What Is Your Hobby ?
</option>
            <option class="What is your
favourite color?">What is your Favourite color?
</option>
        <option class="What is your School
name?">What is your School name?</option>
        </select>

       
        <label>Answer</label>
        <input type="text" name="uans"
class="form-control " required>
     

        <div class="text-center mt-2">

        <input type="submit" value="Register"
        class="btn btn-primary" name="b1">
       
        <a href="login.php" class="btn
btn-danger">
            Already Have an Account?</a>
    </div>
    </form>
    </div>
   
</body>
</html>

Registration Form

(Use to Bootstrap language )

Output::-

Registration form (use to bootstrap) output

Registration Form 

(Use  PHP language)
Example :-


<?php
include 'connection.php';

    if(isset($_POST['b1']))
    {
       $name = $_POST['unm'];
       $mob = $_POST['umob'];
       $email = $_POST['uem'];
       $pass = $_POST['upwd'];
       $que = $_POST['uque'];
       $ans= $_POST['uans'];

       $qS="SELECT * FROM userdetails
WHERE uem = '$email'";
      // echo $qS;
      $rs = mysqli_query($cn,$qS);
      $count = mysqli_num_rows($rs);
      //echo $count;
        if($count == 1)
        {
            echo "<script>
            alert('Username Already Exist');
            </script>";
        }

        else
        {
            $qI="INSERT INTO userdetails
(unm,uem,upwd,umob,uque,uans)
            VALUES('$name','$email','$pass'
,$mob,'$que','$ans')";
          //  echo $qI;

          if(mysqli_query($cn,$qI))
          {
            echo "<script>
            alert('Register Successfully');
            window.location.href='login.php';
            </script>";

          }

          else
          {
            echo "<script>
            alert('Failed To register');
            </script>";
          }
        }
    }

?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content=
"width=device-width, initial-scale=1.0">
    <title>User Registration</title>
    <link rel="stylesheet" href="
css/bootstrap.css">
</head>
<body class="">

        <h1 class=" text-center mt-3">
            <?php
        $qC ="SELECT count(uid) as x
FROM userdetails";
        $rsC=mysqli_query($cn,$qC);
        $dataC= mysqli_fetch_assoc($rsC);
       
            ?>
            Total Register User - <?php
echo $dataC['x']?>
        </h1>
   
        <div class="col-md-4 bg-white
shadow-lg mx-auto mt-5
        p-3">
           
          <h1 class="text-center text-primary">
                Register Here
            </h1>

        <form action="index.php" method="post">
            <label>Name</label>
            <input type="text" name="unm"
class="form-control mb-1"
            required>

            <label>Mobile No</label>
            <input type="text" name="umob"
class="form-control mb-1"
            required>

            <label>Email Address</label>
            <input type="email" name="uem"
class="form-control mb-1"
            required>

            <label>Password</label>
            <input type="password" name="upwd"
class="form-control mb-1"
            required>

            <select class="form-control mb-1"
name="uque" required>
                <option disabled selected>
                     --Select Sequrity
Quetion --
                </option>

           <option value="What is your Hobby">
What is your Hobby?</option>
        <option value="What is your Favourite
color">What is your
Favourite color?</option>
                <option value="What is your
School Name">What is your School Name?
</option>
            </select>

            <label>Answer</label>
            <input type="text" name="uans"
class="form-control mb-1"
            required>

            <div class="text-center">
                <input type="submit"
value="Register"
            name="b1" class="btn btn-primary">

                <a href="login.php" class="
btn btn-danger">Already Have an Account ?
</a>
            </div>
            </form>
        </div>
</body>
</html>

Registration Form 

Output ::- 

(output store in the database)

             1] you can create the database 
            2] php code to call the database name 
               for example ::- wallet is database name. 

<?php

$cn = mysqli_connect("localhost","root","",
"wallet");
?>

registration form php /output

registration form php use/output

MYSQL  OUTPUT 

registration form php use mysql /output


Related Post :-

html radio button

how to create login forms

php program to check whether a number is positive or negative

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