Random Questions PHP

[Robianosa]

Hello everyone,

I want to make random questions using PHP, but I want it to display only one question and after I answer that question I want it to display another question and I want all that to be randomly.

I tried to use random array, but the problem is how to make it show the other question without duplicate or forget questions and how to make it go to another question right after I choose an answer ( the answer will be a pictures and you choose by clicking on them).

Thanks!

[planetsim]

The easiest solution would be to keep track of questions you have already asked e.g.

$questions = array(
1,
2,
3,
4,
5
);

$asked_questions = array(
2,
5
);

The questions array is just all the questions to ask, the asked_questions array is keys or even the questions themselves stored. Once you ask a question you store it so it can be checked when finding a new random question to display.

A very simplistic example of what Im talking about.

function randomQuestion()
{
    $index = rand(1,5);
    if ( in_array( $index, $asked_questions ) )
        return randomQuestion();

$asked_questions[] = $index;
return $questions[ $index ];
}

[Robianosa]

So I did this code, but I think there is something wrong with 'While'

Can anyone help ?

<?php

$co1='';
$co2='';
$co3='';
$co4='';

$c1_1='1';
$c1_2='2';
$c1_3='3';
$c1_4='4';

$c2_1='1';
$c2_2='2';
$c2_3='3';
$c2_4='4';

$c1=array($c1_1,$c1_2,$c1_3,$c1_4);
$c2=array($c2_1,$c2_2,$c2_3,$c2_4);
shuffle($c1);


if($c1[0]==1){
echo 1;
$co1='1';
$c2_1='';
}
if($c1[0]==2){
echo 2;
$co2='2';
$c2_2='';
}
if($c1[0]==3){
echo 3;
$co3='3';
$c2_3='';
}
if($c1[0]==4){
echo 4;
$co4='4';
$c2_4='';
}

shuffle($c2);

/*do{
  shuffle($c2);
} while(empty($c2[0]));*/

while($c2[0]==''){
   shuffle($c2);
}

if($c2[0]==1){
echo 1;
$co1='1';
}
if($c2[0]==2){
echo 2;
$co2='2';
}
if($c2[0]==3){
echo 3;
$co3='3';
}
if($c2[0]==4){
echo 4;
$co4='4';
}

[anoopmail]

You made it complicated 😉

[zyon_z]

Just store the array key in session,and on next page check if the key of the element u want to show is different than stored one.

[zyon_z]

Or if u want to use that function u made,pass the array as an argument by reference and unset the element,that way once displayed the element will not exist in the array anymore so no duplicates.