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Accepted
Josep Giner
Asked: 2021-11-30 04:37:24 +0800 CST 2021-11-30 04:37:24 +0800 CST

How can I, depending on the variable, show according to the number set?

  • 772

I have a problem and it is that I have a box to enter a number and based on that the php program has to do a fibonacci as entered but the problem is that I don't know how to do it. Can somebody help me? I'd be really grateful

<form action="funciones.php" method="post" name="myForm">
Introduce Numero<br>
  <input type="int" name="numero" value=" "><br>

<input type="radio" id="age1" name="fib" >
  <label for="age1">Fibonacci</label><br>
  <input type="radio" id="age2" name="Fac" >
  <label for="age2">Factorial</label><br>  
  <input type="radio" id="age3" name="Sumax" >
  <label for="age3">Suma xifres</label><br><br>
  <input type="radio" id="age4" name="Capicua" >
  <label for="age4">Capicua</label><br><br>
  <input type="submit" value="Submit">

</form>

<?php
if(isset($_POST['fib'])){
    function fibonacci ($num){
        $numero=0;
        $j1=0;
        $j2=1;
        echo $j1.' '.$j2.'  ';
        while($numero < $num){
            $j3=$j2+$j1;
            echo $j3.' ';
            $j1=$j2;
            $j2=$j3;
            $numero=$numero + 1;
        }
        
    
    }
    fibonacci('fib');
}

?>
php

1 Answers

  1. Best Answer

    When you execute the function you have to pass it the variable that you want to act as $num. Your code should be like this.


    <input type="radio" id="age1" name="fib" >
  <label for="age1">Fibonacci</label><br>
  <input type="radio" id="age2" name="Fac" >
  <label for="age2">Factorial</label><br>  
  <input type="radio" id="age3" name="Sumax" >
  <label for="age3">Suma xifres</label><br><br>
  <input type="radio" id="age4" name="Capicua" >
  <label for="age4">Capicua</label><br><br>
  <input type="submit" value="Submit">

</form>

<?php
if(isset($_POST['fib'])){
    function fibonacci ($num){
        $numero=0;
        $j1=0;
        $j2=1;
        echo $j1.' '.$j2.'  ';
        while($numero < $num){
            $j3=$j2+$j1;
            echo $j3.' ';
            $j1=$j2;
            $j2=$j3;
            $numero=$numero + 1;
        }
        
    
    }
    fibonacci($_POST['fib']);
}

    In this case, the variable $_POST['fib'] will act as $num in your function.

    As long as you specify the need for a variable when you build the function:

        function fibonacci ($num){

    You will have to give it a value that occupies that function, in your case you had entered:

    fibonacci('fib');

    So you were passing a string to your function when it should be an int.

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