How to pass values to a PHP on the same page and keep them selected

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How to pass values to a PHP on the same page and keep them selected

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#1 by (2 votes)
#2 by (0 votes)

0

In this case I am sending values (of a select and a number), the values pass normally, but the problem is that when I select one, the other one is deselected, but what I would like is that they be selected (if is that you select the two), as you could do so that when you select a value, it is marked in your select.

  <!DOCTYPE html>
  <html>
 <head>
 <title></title>
 </head>
 <body>
 <h2>Pasar Valores</h2>
 <form action="buscar.php">
    <select name="miselector" id="miselector" onchange="this.form.submit()">
        <option value="">seleccionar</option>
        <option value="coches">coches</option>
        <option value="casas">casas</option>
    </select>

  <input type="Number" name="semana" id="semana" style="width: 50px; height: 25px; text-align: center;position: center" step="1">
  </form>

   <?php
     if (isset($_GET['miselector']) or isset($_GET['semana'])) {
       echo "<br>estado: ".$_GET["miselector"];
       echo "<br>semana: ".$_GET["semana"];
     }
   ?>
</body>
 </html>

html php

asked by kev 18.06.2018 в 22:16

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2 answers

2

In that case, you should use a select multiple , and here you would need a button to submit the form (the selected values) to be able to read them from php, since otherwise, the onchange event will be executed as soon as you select the first element of your select.

This example is very clear.

answered by 18.06.2018 в 22:25

Get JavaScript textbox value Print button if a value is empty

score 0 · Accepted Answer

You can add JS to solve this case, for example the following case

 <!DOCTYPE html>
  <html>
 <head>
 <title></title>
 </head>
 <body>
 <h2>Pasar Valores</h2>
 <form action="index.php">
    <select name="miselector" id="miselector" onchange="this.form.submit()">
        <option value="">seleccionar</option>
        <option value="coches">coches</option>
        <option value="casas">casas</option>
    </select>

  <input type="Number" name="semana" id="semana" style="width: 50px; height: 25px; text-align: center;position: center" step="1">
  </form>

   <?php
     if (isset($_GET['miselector']) or isset($_GET['semana'])) {
       echo "<br>estado: ".$_GET["miselector"];
       echo "<br>semana: ".$_GET["semana"];
     }
   ?>
</body>

<script>
document.getElementById("miselector").value = "<?php echo($_GET["miselector"]);?>";
document.getElementById("semana").value = "<?php echo($_GET["semana"]);?>";
</script>

 </html>