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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PHP Program factorial number program

Factorial number 

Factorial number

Factorial number 


1] Factorial numbers "!" It is indicated by the icon.

2]  means that all negative numbers are less than 
   f or equal to the product of the given positive numbers

factorial number program in php

Example :-

<?php
$number=9;
$factorial=1;
for($a=$number;$a>=1;$a--)
{
    $factorial=$factorial*$a;
}
echo "Factorial of $number is $factorial";
?>

factorial number program in php

Output :-

factorial number check

factorial number using form php

Example :-

<form method="post">
    Enter The Number <br><br>
    <input type="number" name="number"id="number"><br><br>
    <input  type ="submit" name="submit" value="submit">
</form>
<?php
if($_POST){
    $factorial = 1;
    $number= $_POST['number'];
    echo "Factorial of $number;<br><br>";
    for ($i=1;$i<=$number; $i++){
        $factorial=$factorial*$i;      
    }
    echo $factorial;

}
?>

Output :-

factorial number check

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php program to print alphabet pattern M

file upload html

how to run php program

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