Show only the specific indexed array - php

Question

How can I show only the specific index? For example, here's my UI.
As you can see in the picture I have 3 checkboxes and 3 textboxes with array value.
Let's say these are the name of the element.
<input type="checkbox" name="check[]">
<input type="text" name="textbox[]">
Then print the array:
$check = $_POST['check'];
$total_rec = $_POST['textbox'];
echo 'Check Array<br>';
print_r($check);
echo '<br<br><br><br>';
echo 'TextBox Array<br>';
print_r($textbox);
Result:
Check Array
Array ( [0] => 2 )
TextBox Array
Array ( [0] => [1] => 2 [2] => )
As you can see in textbox array all index showed, all I want is to show only the specific index with value and that is the 1 => 2 only.

Answer 1

use empty(), return true if contain value, example :
//iterate each $total_rec's member
foreach($total_rec as each){
//if $each not empty, do something
if(!empty($each)){
echo $each;
}
}

Answer 2

You are using $total_rec for post values of both checkbox and text. You can filter the array of text input like this:
$total_rec_text = $_POST['textbox'];
$total_rec_text = array_filter($total_rec_text, function($arr){
return !empty($arr) ? true : false;
});

Answer 3

You need to loop over $_POST array and check if checkbox is checked.
If checked, then only, get/print value.
Also, in HTML, you need to add specific counters to both checboxes and
textboxes.
As only checked checboxes get posted and texboxes get posted by
default.
<input type="checkbox" name="check[0]">
<input type="text" name="textbox[0]">
<input type="checkbox" name="check[1]">
<input type="text" name="textbox[1]">
<input type="checkbox" name="check[2]">
<input type="text" name="textbox[2]">
if (isset($_POST['check'])) {
foreach ($_POST['check'] as $idx => $value) {
echo "<br/>" . $_POST['check'][$idx] . ' ' . $_POST['textbox'][$idx];
}
}