How to reset/change a variables value if while loop condition false in php

Question

I have situation where i want to set some value to a php variable in a while loop. Please have a look at my code for better understanding.

$radioChecked = '';
$j=1;

while($j <= $someNumber){
$radioChecked = 'checked';
$j++; 
}

Now i want after finishing while loop my $radioChecked variable should have an empty string.

Actually i am trying to do this: i have some Radio buttons and i want to check some of them. how many checkboxes will be checked it will be depending on $someNumber variable.

Then i have checkboxes down:

    for ($i = 0; $i < $total_radios; $i++){
    <input type="radio" <?php echo $radioChecked; ?> />
    }

Now here is the problem:

if i have 4 $total_radios then i am getting 4 radios displayed on the page which is good as i expecting that. If $someNumber is 2 then i want first 2 radio buttons to be checked. If $someNumber is 3 then i want first 3 radio buttons to be checked and so on.

But in my case it is checking all the Radio Buttons. I need some logic to reset $radioChecked variable to empty string if condition while loop condition false.

How can i do this? Thanks.

"Now i want after finishing while loop my $checkbox variable should have an empty string." There is no $checkbox variable. — user8034901
– user8034901, Commented Sep 18, 2018 at 9:47

Joel Hinz · Accepted Answer · 2018-09-18 09:49:46Z

3

Why not just do it in the loop?

foreach ($total_radios as $i => $total){
    <input type="radio" <?php if ($i < $someNumber) echo 'checked'; ?> />
}

Mish-mash between php and html but the provided example is the same.

answered Sep 18, 2018 at 9:49

Joel Hinz

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3 Comments

Rakesh K Over a year ago

Thanks for reply. The problem is $total_radios is not an array . it is an integer.

Joel Hinz Over a year ago

foreach (range(0, $total_radios - 1) ... then :)

Rakesh K Over a year ago

Thank you very much. Looks like this is also a good solution. i Will give a try sure. Thank you for the answer. )

Barmar · Accepted Answer · 2018-09-18 10:02:32Z

1

Perform the test against $someNumber around the echo statement.

for ($i = 0; $i < $total_radios; $i++){ ?>
    <input type="radio" <?php if ($i < $someNumber) echo $radioChecked; ?> />
<?php 
}

You were also missing the ?> and <?php around the HTML body of the for loop.

answered Sep 18, 2018 at 10:02

Barmar

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1 Comment

Rakesh K Over a year ago

I am using Laravel blade i just recreated this scenario to understand better.

Barmar · Accepted Answer · 2018-09-18 09:59:35Z

0

I think this would also work as a solution:

for ($i = 0; $i < $total_radios; $i++){
    <input type="radio" <?php echo $radioChecked; ?> />
    $j--;
    if ($j == 0) {
        $radioChecked = '';
    }
}

edited Sep 18, 2018 at 9:59

Barmar

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answered Sep 18, 2018 at 9:53

noid

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1 Comment

Barmar Over a year ago

You're missing ?> before the <input

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