how to get values from multiple select/listboxes in php?

Question

i want to know that how to get multiple selectbox values in php means that i have more than 1 select box on a page and it can be increased when user click on addmeans that a page can contain numerous selectboxes now plz tell me how to get the values from that boxes and also how do i get know that how many select boxes were used by user

i think an array should be used but i dont know how??

    <select name="select" id="select">

<option value="1">value1</option>

<option value="2">value2</option>

<option value="3">value2</option>

</select>

    <select name="select" id="select">

<option value="1">value1</option>

<option value="2">value2</option>

<option value="3">value2</option>

</select>



    <select name="select" id="select">

<option value="1">value1</option>

<option value="2">value2</option>

<option value="3">value3</option>

</select>

like in above example how do i get know that how many selectboxes were used and how to get value of each box

code for adding the new dropdown

function addRow()
            {
                var newRow = document.all("tblGrid").insertRow();


                var oCell = newRow.insertCell();
                oCell.innerHTML = "<select name='select' id='select'><option value='1'>1</option><option value='2'>2</option><option value='3'>3</option></select>";

possible duplicate of How to deal with multiple values of <select> in PHP? — goat
– goat, Commented May 20, 2012 at 5:02

Naveed · Accepted Answer · 2012-05-20 05:09:19Z

1

First of all you need to use unique id and name for each select box. Otherwise it is difficult to manage them after post.

So you can do it something like this:

<select name="myselect[]" id="select1">

<select name="myselect[]" id="select2">

<select name="myselect[]" id="select3">

After form post you can get all select box values:

print_r( $_POST['myselect'] );

For number of select boxes on page you can try:

echo count( $_POST['myselect'] );

edited May 20, 2012 at 5:09

answered May 20, 2012 at 5:04

Naveed

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7 Comments

Naveed Over a year ago

Can you please show your code which is adding new select boxes.

Mohsin Over a year ago

function addRow() { } var newRow = document.all("tblGrid").insertRow(); //add 3 cells (<td>) to the new row and set the innerHTML to contain text boxes var oCell = newRow.insertCell(); oCell.innerHTML = "<select name='select' id='select'><option value='1'>1</option><option value='2'>2</option><option value='3'>3</option></select>";

Naveed Over a year ago

You need to use some counter in following line to get a unique id and name:

oCell.innerHTML = "<select name='select' id='select'><option value='1'>1</option><option value='2'>2</option><option value='3'>3</option></select>";

Naveed Over a year ago

Try:

oCell.innerHTML = "<select name='select[]' class='select'><option value='1'>1</option><option value='2'>2</option><option value='3'>3</option></select>";

Mohsin Over a year ago

Thanks NAVEED this works tell me 1 more thing that how we can use php values in that javasctipt code

|

Selvam Palanimalai · Accepted Answer · 2012-05-20 04:54:58Z

1

Change the name attribute value in each tag to something unique like 'select1','select2','select3' . To refer these values in PHP use $_POST['select1'] and so on. OR use $_GET['select1'] incase of get method is used in the form.

answered May 20, 2012 at 4:54

Selvam Palanimalai

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2 Comments

Mohsin Over a year ago

one dropdown box is shown on main page while other are created when user click on add other dropdown were clone of the main dropdown

verisimilitude Over a year ago

+1. no matter how many dropboxes you create, they'll be POSTed even they are contained within a <form> tag. As directed above, make them unique.

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