How to pass a Javascript Array to PHP

Question

How to pass the Array newArray from Javascript to a PHP vector? The idea is to take the value id of each checkbox and put in a vector in PHP so that these id’s are treated in a database (as primary key). That code already takes checkbox id’s marked and shows them in a window.

---

Example:

Idcheckbox: 1, 2, 3

Vetorphp: [1,2,3]

---

function coletaDados() {
  var ids = document.getElementsByClassName('editar');
  coletaIDs(ids);
}

function coletaIDs(dados) {
  var array_dados = dados;
  var newArray = [];
  for (var x = 0; x <= array_dados.length; x++) {
    if (typeof array_dados[x] == 'object') {
      if (array_dados[x].checked) {
        newArray.push(array_dados[x].id)
      }
    }
  }
  if (newArray.length <= 0) {
    alert("Selecione um pelo menos 1 item!");
  } else {
    alert("Seu novo array de IDs tem os seguites ids [ " + newArray + " ]");
  }
}

<table border="1">
  <thead>
    <tr>
      <th>Id</th>
      <th>Nome</th>
      <th>Categoria</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><input class="editar" type="checkbox" id="01" value="Barco"></td>
      <td>Barco</td>
      <td>Não definido</td>
    </tr>
    <tr>
      <td><input class="editar" type="checkbox" id="02" value="Carro"></td>
      <td>Carro</td>
      <td>não definido</td>
    </tr>
    <tr>
      <td colspan="3">
        <button style="width:100%;" onclick="coletaDados()">Editar</button>
      </td>
    </tr>
  </tbody>
</table>

Answer 1

Assuming you can use jQuery and a form is not an option, you can try the Ajax method:

$.ajax({
url: '/caminho/do/seu/script.php',
type: 'POST',
dataType: 'JSON',
data: newArray,
success:function(e){
    console.log(e);
},
error:function(error){
    console.log(error);
}});

When receiving this data in PHP it depends entirely on how the array was mounted in javascript.

In Ajax the parameter DataType says what kind of data will be returned in the request, so your PHP should return a JSON in the case of my example. And data you will pass what you want to send in the POST.