PHP - agregar filas dinamicas a una tabla con datos de otra tabla

<?php

function add(button) {

  var row = button.parentNode.parentNode;

  var cells = row.querySelectorAll('td:not(:last-of-type)');

  addToCartTable(cells);

}

function remove() {

	var row = this.parentNode.parentNode;

    document.querySelector('#target tbody')

        .removeChild(row);

}

function addToCartTable(cells) {

   var code = cells[1].innerText;

   var name = cells[2].innerText;

   var price = cells[3].innerText;

   var newRow = document.createElement('tr');

   newRow.appendChild(createCell(code));

   newRow.appendChild(createCell(name));

   newRow.appendChild(createCell(price));

   var cellInputQty = createCell();

   cellInputQty.appendChild(createInputQty());

   newRow.appendChild(cellInputQty);

   var cellRemoveBtn = createCell();

   cellRemoveBtn.appendChild(createRemoveBtn())

   newRow.appendChild(cellRemoveBtn);

   document.querySelector('#target tbody').appendChild(newRow);

}

function createInputQty() {

  var inputQty = document.createElement('input');

  inputQty.type = 'number';

  inputQty.required = 'true';

  inputQty.min = 1;

  inputQty.className = 'form-control'

  return inputQty;

}

function createRemoveBtn() {

  var btnRemove = document.createElement('button');

  btnRemove.className = 'btn btn-xs btn-danger';

  btnRemove.onclick = remove;

  btnRemove.innerText = 'Descartar';

  return btnRemove;

}

function createCell(text) {

  var td = document.createElement('td');

  if(text) {

  	td.innerText = text;

  }

  return td;

}

*, *:before, *:after {

  box-sizing: border-box;

  margin: 0;

  padding: 0;

}

#target td {

  /* para centrado vertical de contenido */

  vertical-align: middle;

}

?>