PHP Random Array with no duplicates

Question

I'm trying to get something right when I reload the browser the array changes randomly with no duplicate. When I reload the browser I saw duplicate array coming randomly, please help me.

Here is the code

<html>
    <head></head>
    <body>
        <?php


        $size = 3; $strl = "what"; $fitness1 = array("steps $strl", "dizziness $strl", "$strl symptoms  ", "treatment $strl", "obesity $strl","$strl discharge");

        $fitness1 = array_unique($fitness1);

        $number = 1;

        for ($b = 0; $b < $size ;$b++){


           echo $number++ . "<table><tr><td> " . $fitness1[array_rand($fitness1)] . "<td></tr></table>";echo $number++ . "<table><tr><td> " . $fitness1[array_rand($fitness1)] . "<td></tr></table>";




    for ($i = 0; $i < $size; $i++){



        }
    } 

        ?>
    </body>
</html>

So table needs to have unique values? Also, please indent your code — mighty_dev
– mighty_dev, Commented Feb 25, 2020 at 19:14
When you reload the browser, there's nothing keeping track of anything from previous requests. You'll need to maintain that somehow, probably using session. Here's an example of something like that: stackoverflow.com/questions/51458831/… — Don't Panic
– Don't Panic, Commented Feb 25, 2020 at 19:19

ash__939 · Accepted Answer · 2020-02-25 19:52:00Z

0

$i = 0;
$number = 1;
do {
    shuffle($fitness1);
    echo "<tr><td>" . ($number++) ."</td><td>" . array_shift($fitness1) ."</td></tr>";
    echo "<tr><td>" . ($number++) ."</td><td>" . array_shift($fitness1) ."</td></tr>";
    $i++;
} while ($i < $size && !empty($fitness1));

shuffle() This function shuffles (randomizes the order of the elements in) an array Blockquote

So each time you reload the page, the order will be different

https://www.php.net/manual/en/function.shuffle.php

array_shift() shifts the first value of the array off and returns it, shortening the array by one.

https://www.php.net/manual/en/function.array-shift.php

Once the value is printed, it will be removed from the array. So no repeated values

answered Feb 25, 2020 at 19:52

ash__939

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1 Comment

Odion Usiobaifo Over a year ago

Thanks, it works well, I really appreciate, you save my time.

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