Replace array keys and values [duplicate]

Try this block of code:

// Assuming the array you have is called $mainArray.
// The output will be $outputArray.
$outputArray = array();

foreach ($mainArray as $index => $array) { // Iterate through all the arrays inside the main array.
// foreach ($mainArray as $array) { // Use this if the numeric index order doesn't matter.
    foreach ($array as $key => $value) { // Iterate through each inner array.
        // Load the multidimensional array with the first key as one of (id, name, message, date_create) and second key as the numeric index (if you need it).
        $outputArray[$key][$index] = $value;
        // $outputArray[$key][] = $value; // Use this if the numeric index order doesn't matter.
    }
}

print_r($outputArray);