How to convert an output array to a string or variable using PHP?

Question

I am getting an output in array:

    array (size=3)
  8 => string 'Mexico' (length=6)
  24 => string 'UAE' (length=3)
  34 => string 'India' (length=5)

    array (size=9)
  2 => string '' (length=0)
  8 => string 'Large' (length=5)
  14 => string '' (length=0)
  19 => string '' (length=0)
  23 => string '' (length=0)
  24 => string 'Micro' (length=5)
  34 => string 'Large' (length=5)
  35 => string '' (length=0)
  38 => string '' (length=0)

I want the output in the following format: Which means need to compare the id of both.

Mexico - Large (8)
UAE - Micro (24)
India - Large (34)

PHP SRIPT

<?php
  $entities = $check_list = [];

  foreach($_POST as $k => $v) {
    if(preg_match("/^check_list(\d+)$/", $k, $matches))
      $check_list[intval($matches[0])] = $v;
    unset($matches);
    if(preg_match("/^entity_selected(\d+)$/", $k, $matches))
      $entities[intval($matches[0])] = $v;
  };
            var_dump($_POST['check_list']);

            var_dump($_POST['entity_selected']);

            echo implode(" ",$_POST['entity_selected'])."<br>";

            echo implode(" ",$_POST['check_list'])."<br>";
?>

I need to compare the variable and insert the data accordingly to the DB. But i am not able to make this data into variables. How can I do that?

This is my PHP Form script:

<form method="POST" action="nextpage1.php">
  <table border="1">
    <?php
      $i = 0;
      while($row1 = mysqli_fetch_array($result_country))  {
        $country1 = $row1['country'];
        $entity1 = $row1['entity'];
        echo "<tr>";
        ?>
          <td>
            <input name="check_list[<?php echo $i; ?>]" type="checkbox" value="<?php echo $country1;?>"> <?php echo $country1;?>
          </td>
          <td>
            <?php
              if($entity1=="Yes") {
                ?>
                  <select class="form-control selectpicker" name="entity_selected[<?php echo $i; ?>]">
                                      <option value="">Select</option>

                    <option value="Micro">Micro</option>
                    <option value="Small">Small</option>
                    <option value="Large">Large</option>
                  </select>
                <?php
              };
            ?>
          </td>
        <?php
        $i++;
        echo "</tr>";
      };
    ?>
  </table>

Basically the form script consists of some countries with checkboxes and a drop down to select the entities. So which ever check box is selected that value (country name) and the entity has to be captured and inserted to the DB.

John Conde · Accepted Answer · 2020-05-16 19:04:17Z

1

You are over complicating it. Just loop through $_POST['check_list'] and use its key to find the associated value in $_POST['entity_selected']:

foreach ($_POST['check_list'] as $key => $country) {
    echo $country . ' - ' . $_POST['entity_selected'][$key] . ' (' . $key . ')'. "\n";
}

This assumes there is always a corresponding key in $_POST['entity_selected'] as in $_POST['check_list'].

If you want to make the output a little bit easier on the eyes you can also use printf() to help with the formatting:

foreach ($_POST['check_list'] as $key => $country) {
    printf('%s - $s (%u)%s', $country, $_POST['entity_selected'][$key], $key, "\n");
}

edited May 16, 2020 at 19:04

answered May 16, 2020 at 18:44

John Conde

220k100 gold badges464 silver badges504 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Reed Over a year ago

Here's my personal take for making the code nice-looking. I'd change $key to $id, then $size = $_POST['entity_selected'][$id] ?? 'size unknown'; then echo "{$country} - {$size} ({$id})";

Sudha Over a year ago

Thank you. @ John. I have updated the question with the form script also from where i am generating this array.

Sudha Over a year ago

iam getting an error while running the first script. Parse error: syntax error, unexpected '$_POST' (T_VARIABLE), expecting ',' or ';'

Sudha Over a year ago

And also i need to show the entity name also here. Its not showing that

Collectives™ on Stack Overflow

How to convert an output array to a string or variable using PHP?

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related