31797167/DEMO-print-input-arrays-by-rows

<?php

include __DIR__ .'/GroupFieldMap.php';

// -------------------------------------------------------------------------
echo '<pre>';
print_r($_POST);
echo '</pre>';

// ------------------------------31797167/class-map-POST-array-to-required-group-structure-------------------------------------------
$fieldGroup  = array(array('title'),          // only one of these
                      array('label', 'value'), // may be many of these
               );
/**
 * Map GroupIdx => fields / fieldGroups
 *
 * The $_POST array has the indexes in the wrong order hence the
 * required 'mapping' functions.
 *
 * I put them in a class - it is easier for maintenance.
 */
$map = new GroupFieldMap($_POST, $fieldGroup);


if (!empty($_POST)) {

    $groupIdx = 0;
    while ($map->groupExists($groupIdx)) {
        echo '<br />', 'groupIdx: ', $groupIdx;

        echo '<br />', 'groupIdx Summary: ', $groupIdx;
        // group field summary
        foreach($map->fields() as $fieldIdx => $field) {
            echo '<br />', 'fieldName: ', $field,
                 ' count (group): ', $map->groupFieldCount($groupIdx, $field);
        }

        // group field details
        /*
        foreach ($map->fieldGroup() as $fieldList) { // array of related fields
            foreach ($fieldList as $field) {
                echo '<br />', 'fieldName: ', $field,
                    ' Value: ', $map->groupFieldValue($groupIdx, $field, $fieldIdx);
            }
        }
         *
         */
        $groupIdx++;
    }
}
?>

<form action="" method='post'>
<div class="row">
    <input type="text" value="T_0_0" name="title[0][]" />

    <input type="text" value="L_0_0" name="label[0][]" />
    <input type="text" value="V_0_0" name="value[0][]" />

    <input type="text" value="L_0_1" name="label[0][]" />
    <input type="text" value="V_0_1" name="value[0][]" />

    <input type="text" value="L_0_2" name="label[0][]" />
    <input type="text" value="V_0_2" name="value[0][]" />
</div>
<br />
<div class="row">
    <input type="text" value="T_1_0" name="title[1][]" />

    <input type="text" value="L_1_0" name="label[1][]" />
    <input type="text" value="V_1_0" name="value[1][]" />

    <input type="text" value="L_1_1" name="label[1][]" />
    <input type="text" value="V_1_1" name="value[1][]" />
</div>
<br />

<div class="row">
    <input type="text" value="T_2_0" name="title[2][]" />
    <input type="text" value="L_2_0" name="label[2][]" />
    <input type="text" value="V_2_0" name="value[2][]" />
</div>
<br />
    <input type="submit" value="doit" name="submit" />
</form>

<?php  exit; // end of processing

/* old processing
    var_dump($groupIdx, isset($_POST['title'][$groupIdx]));
    while (isset($_POST['title'][$groupIdx])) {

        echo '<br />', 'One complete group for groupId: ', $groupIdx;

        reset($fieldGroups); // internal iterator
        while (current($fieldGroups) !== false) {

            $currentFieldGroup = current($fieldGroups);

            $currentFieldIdx = 0;
            $currentFieldName = current($currentFieldGroup);

            while (isset($_POST[$currentFieldName][$groupIdx][$currentFieldIdx])) {
                foreach ($currentFieldGroup as $fieldName) {
                    echo '<br />', 'GroupId: ', $groupIdx,
                          ', FieldName: ', $fieldName,
                          ', FieldIdx: ', $currentFieldIdx,
                          ', Value: ', $_POST[$fieldName][$groupIdx][$currentFieldIdx];
                }
                $currentFieldIdx++;
            }
            $currentFieldGroup = next($fieldGroups);
        }

       $groupIdx++; // next group to be processed
    }
 *
 */