How to get multiple selected values of select box in php?

Question

I have a html form which has a select list box from which you can select multiple values because its multiple property is set to multiple. Consider form method is 'GET'. The html code for the form is as follows:

<html>
    <head>
    <title>Untitled Document</title>
    </head>
    <body>
    <form id="form1" name="form1" method="get" action="display.php">
      <table width="300" border="1">
        <tr>
          <td><label>Multiple Selection </label>&nbsp;</td>
          <td><select name="select2" size="3" multiple="multiple" tabindex="1">
            <option value="11">eleven</option>
            <option value="12">twelve</option>
            <option value="13">thirette</option>
            <option value="14">fourteen</option>
            <option value="15">fifteen</option>
            <option value="16">sixteen</option>
            <option value="17">seventeen</option>
            <option value="18">eighteen</option>
            <option value="19">nineteen</option>
            <option value="20">twenty</option>
          </select>
          </td>
        </tr>
        <tr>
          <td>&nbsp;</td>
          <td><input type="submit" name="Submit" value="Submit" tabindex="2" /></td>
        </tr>
      </table>
    </form>
    </body>
    </html>

I want to display the selected values in select list box on display.php page. So how are the selected values accessed on display.php page using $_GET[] array.

Are you allowed to rename `select2`? Or does someone else control the form? — Damian Yerrick, Apr 28 '17 at 16:30

Alex Jasmin · Accepted Answer · 2015-09-13T19:15:09.110

426

If you want PHP to treat $_GET['select2'] as an array of options just add square brackets to the name of the select element like this: <select name="select2[]" multiple …

Then you can acces the array in your PHP script

<?php
header("Content-Type: text/plain");

foreach ($_GET['select2'] as $selectedOption)
    echo $selectedOption."\n";

$_GET may be substituted by $_POST depending on the <form method="…" value.

edited Sep 13 '15 at 19:15

answered Mar 09 '10 at 07:52

Alex Jasmin

39,094
7
77
67

1

for me it seems, that browser does not send the post/get-parameter if nothing was selected of the multiple-select. how can you force to have an empty array, instead? – emfi Mar 11 '15 at 13:16
I had to use $_POST['select2'] instead of $_GET['select2'] – Kyle Bridenstine Apr 21 '15 at 05:05
3

This is an old answer, but this is a misleading answer! (name="select2[]") is correct as @Coufu answered! – meYnot Jan 09 '16 at 16:41
@emfi If you want the parameter to be sent there must be a value; you can add "selected" to the tag (ie ``) if you can tolerate having a default option in the list. You can also use CSS to make the default option invisible; however if someone selects a different option, then unselects everything.. you can wind up with no value being returned. So.. there's no clean solution using GET. – apraetor Mar 05 '17 at 22:40
1

Adding [] works for me both on POST and GET, but the resulting URI (with GET) is just too awful (..multiselect.php?ms%5B%5D=1&ms%5B%5D=2) – Teson May 03 '17 at 05:49

score 200 · Answer 2 · answered Mar 09 '10 at 07:54

200

Change:

<select name="select2" ...

To:

<select name="select2[]" ...

answered Mar 09 '10 at 07:54

Coufu

2,031
1
11
4

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In some cases, why might this still not work? I am not getting success with this. – Mike Kormendy Jun 26 '16 at 15:26

score 45 · Answer 3 · edited Oct 07 '13 at 06:22

You can use this code to retrieve values from multiple select combo box

HTML:

<form action="c3.php" method="post">
  <select name="ary[]" multiple="multiple">
    <option value="Option 1" >Option 1</option>
    <option value="Option 2">Option 2</option>
    <option value="Option 3">Option 3</option>
    <option value="Option 4">Option 4</option>
    <option value="Option 5">Option 5</option>
  </select>
  <input type="submit">
</form>

PHP:

<?php
$values = $_POST['ary'];

foreach ($values as $a){
    echo $a;
}
?>

score 35 · Answer 4 · answered Mar 09 '10 at 08:31

Use the following program for select the multiple values from select box.

multi.php

<?php
print <<<_HTML_
<html>
        <body>
                <form method="post" action="value.php">
                        <select name="flower[ ]" multiple>
                                <option value="flower">FLOWER</option>
                                <option value="rose">ROSE</option>
                                <option value="lilly">LILLY</option>
                                <option value="jasmine">JASMINE</option>
                                <option value="lotus">LOTUS</option>
                                <option value="tulips">TULIPS</option>
                        </select>
                        <input type="submit" name="submit" value=Submit>
                </form>
        </body>
</html>
_HTML_

?>

value.php

<?php
foreach ($_POST['flower'] as $names)
{
        print "You are selected $names<br/>";
}

?>

score 8 · Answer 5 · answered Dec 21 '13 at 06:10

    <html>
<head>
<title>Untitled Document</title>
</head>
<body>
<form id="form1" name="form1" method="get" action="display.php">
  <table width="300" border="1">
    <tr>
      <td><label>Multiple Selection </label>&nbsp;</td>
      <td><select name="select2[]" size="3" multiple="multiple" tabindex="1">
        <option value="11">eleven</option>
        <option value="12">twelve</option>
        <option value="13">thirette</option>
        <option value="14">fourteen</option>
        <option value="15">fifteen</option>
        <option value="16">sixteen</option>
        <option value="17">seventeen</option>
        <option value="18">eighteen</option>
        <option value="19">nineteen</option>
        <option value="20">twenty</option>
      </select>
      </td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><input type="submit" name="Submit" value="Submit" tabindex="2" /></td>
    </tr>
  </table>
</form>
</body>
</html>

You can iterate it directly like this

foreach ($_GET['select2'] as $value)
    echo $value."\n";

or you can do it like this

$selectvalue=$_GET['select2'];
foreach ($selectvalue as $value)
    echo $value."\n";

score 5 · Answer 6 · edited Jun 05 '13 at 11:13

5

This will display the selected values:

<?php

    if ($_POST) { 
        foreach($_POST['select2'] as $selected) {
            echo $selected."<br>";
        }
    }

?>

edited Jun 05 '13 at 11:13

Gigala

143
2
10

answered May 27 '12 at 08:14

ahmed

75
1
1

4

This has multiple flaws: 1) the OP was using GET method; 2) it's lacking the most important step of appending square brackets to the form element name, like `name="select2[]"`. – charlie Mar 18 '15 at 15:50

Rynika · Answer 7 · 2013-06-18T20:25:08.707

5

// CHANGE name="select2" TO name="select2[]" THEN
<?php
  $mySelection = $_GET['select2'];

  $nSelection = count($MySelection);

  for($i=0; $i < $nSelection; $i++)
   {
      $numberVal = $MySelection[$i];

        if ($numberVal == "11"){
         echo("Eleven"); 
         }
        else if ($numberVal == "12"){
         echo("Twelve"); 
         } 
         ...

         ...
    }
?>

edited Jun 18 '13 at 20:25

answered Jun 18 '13 at 20:09

Rynika

51
1
2

score 4 · Answer 8 · answered Aug 16 '16 at 04:54

You could do like this too. It worked out for me.

<form action="ResultsDulith.php" id="intermediate" name="inputMachine[]" multiple="multiple" method="post">
    <select id="selectDuration" name="selectDuration[]" multiple="multiple"> 
        <option value="1 WEEK" >Last 1 Week</option>
        <option value="2 WEEK" >Last 2 Week </option>
        <option value="3 WEEK" >Last 3 Week</option>
         <option value="4 WEEK" >Last 4 Week</option>
          <option value="5 WEEK" >Last 5 Week</option>
           <option value="6 WEEK" >Last 6 Week</option>
    </select>
     <input type="submit"/> 
</form>

Then take the multiple selection from following PHP code below. It print the selected multiple values accordingly.

$shift=$_POST['selectDuration'];

print_r($shift);

score 0 · Answer 9 · answered Apr 16 '13 at 19:25

0

I fix my problem with javascript + HTML. First i check selected options and save its in a hidden field of my form:

for(i=0; i < form.select.options.length; i++)
   if (form.select.options[i].selected)
    form.hidden.value += form.select.options[i].value;

Next, i get by post that field and get all the string ;-) I hope it'll be work for somebody more. Thanks to all.

answered Apr 16 '13 at 19:25

Drako

769
1
8
23

1

This has multiple flaws: 1) is depending on the JavaScript being available; 2) does not separate the values when joining them into a single string, thus making it imposible to split the string back into values later on. – charlie Mar 18 '15 at 15:43
This answer gives me the necessary direction. Thx. – Oleg Popov Jul 18 '17 at 03:38

score 0 · Answer 10 · edited Aug 19 '15 at 17:40

0

foreach ($_POST["select2"] as $selectedOption)
{    
    echo $selectedOption."\n";  
}

edited Aug 19 '15 at 17:40

Giancarlo Abel Giulian

177
1
3
14

answered Oct 07 '13 at 05:51

SwR

612
1
8
21

score -1 · Answer 11 · answered Jan 02 '23 at 17:24

-1

form submit with enctype="multipart/form-data"

answered Jan 02 '23 at 17:24

Ehsan Gholami

85
2
5

How to get multiple selected values of select box in php?

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