How to persist / fill the data of a form via PHP?

Just by the desired value in the value of the text fields, or option checked and selected in the checkboxes and selects

Example for text field:

$nome = $_GET['nome'];
$form_nome = htmlentities( $nome );

echo '<input type="text" name="nome" value="'.$form_nome.'">';

Example for select :

$metragem = $_GET['metragem'];

// EXEMPLO DIDATICO APENAS! Na prática pode ser switch ou um loop inteligente
// atrelado a um loop que gere o form, por exemplo, ou if ... elseif, etc:
if( $metragem == '100' ) $form_select100 = ' selected="selected"';
if( $metragem == '200' ) $form_select200 = ' selected="selected"';

echo '<select name ="metragem">';
echo '   <option value="100"'.$form_select100 .'>100m</option>';
echo '   <option value="200"'.$form_select200 .'>200m</option>';
echo '</select>';

Example for checkbox :

$avisar = $_GET['avisar'];

if( $avisar == 'sim' ) $form_avisar = ' checked="checked"';

echo '<input type="checkbox" name="avisar" value="sim"'.$form_avisar.'>Avisar</input>';

You just have to adapt to the specific case, and apply some basic logic to not doing field by field manually (that's a general programming question).

Important:

• The "long" version comes to the case only for compatibility with XML serialization, in HTML5 you can use the short version quietly:

  Em vez de:                                Pode usar simplesmente:
  <option value="x" selected="selected">    <option value="x" selected>
  <input id="abcde" checked="checked">      <input id="abcde" checked>
  

• In this case, remember to sanitize the text values with htmlentities() before in value .

• checkboxes remember that you have to separately identify each of them to avoid confusion, since empty checkboxes are not sent.

• Note that we always leave a blank space to separate from the previous attribute:

  $ch1 = ' checked="checked"'
          ^
  

Here's another example, for use of arrays . Similarly, didactic example, in the practical case can use an internal loop , or even switch. It depends on each case.

foreach( $dorm as $item ) {
    // apenas exemplo. use um loop no caso concreto.
    if( $item == '1' ) $ch1 = ' checked="checked"';
    if( $item == '2' ) $ch2 = ' checked="checked"';
    if( $item == '3' ) $ch3 = ' checked="checked"';
    if( $item == '4' ) $ch4 = ' checked="checked"';
}

echo '<input type="checkbox" name="dorm[]" value="1" id="dorm1"'.$ch1.'>';
echo '<input type="checkbox" name="dorm[]" value="2" id="dorm2"'.$ch2.'>';
echo '<input type="checkbox" name="dorm[]" value="3" id="dorm3"'.$ch3.'>';
echo '<input type="checkbox" name="dorm[]" value="4" id="dorm4"'.$ch4.'>';

And here's an inline version of the same logic:

echo '<input type="checkbox" name="dorm[]" value="1" '.($item=='1'?' checked':'').'>';

Separating the problem into parts:

If you really want to do this in JavaScript you need more information in this query string. Any% re_% that is repeated can not know which is which. Here's an idea to help:

To read query string information:

function getHASH() {
    var hash = window.location.search.slice(1);
    var pares = hash.split('&');
    var chaves = pares.map(function (par) {
        var chave_valor = par.split('=');
        return {
            chave: decodeURI(chave_valor[0]),
            valor: decodeURI(chave_valor[1])
        };
    });
    return chaves;
}

With this function you will receive an array of objects, in the example you put it like this:

"[
    {
        "chave": "tipo[]",
        "valor": "APARTAMENTO%2FAPTO+DUPLEX"
    },
    {
        "chave": "area_de",
        "valor": "50"
    },
    {
        "chave": "area_at",
        "valor": "100"
    }
]"

To iterate your HTML by applying these values:

var pares = getHASH();
pares.forEach(function (par) {
    var chave = Object.keys(par)[0];
    var valor = Object.keys(par)[1];
    $('input[name="' + chave + '"]').filter(function () {
        return ~this.value.indexOf(valor);
    })[0].checked = true;
});

With this code you will look for all inputs and check which of them has in your tipos[] the value that comes from the query string and mark it as value