retrieve selection / list option values PHP

Question

I have a dynamic build selection list. The selection list holds "Permit" strings what the user adds to a selection list before recording the form data.

I would like to save all the values of the select box to a string, selected or not selected. Can someone pl explain how would I proceed iterating through the selection box and appending to a string all option values of the dynamicly created selection?

thank you for your smarts and time

function PermitAdd() {
var formObject = document.frmJob
if (formObject.TxtPermitNr.value!="" && formObject.TxtPermitNr.value!="") {
    addOption(formObject.lstPermits,formObject.TxtPermitNr.value,formObject.TxtPermitNr.value)
} else {
    alert("Fill permit text field ")
}

}

....

    <tr>
  <td width="25%">Permit #: </td>
  <td width="9%"><input name="TxtPermitNr" type="text" id="TxtPermitNr" value="<?php echo $strTxtPermitNr;?>" size="10" maxlength="20" />        </td>
  <td width="10%"><input name="button2" type="button" onclick="PermitAdd()" value="Add"/></td>
  <td width="16%"><div align="center">
    <select name="lstPermits" size="4" multiple="multiple" id="lstPermits">
    </select>
  </div></td>
  <td width="40%"><input name="button" type="button" onclick="PermitDelete()" value="Del"/></td>
</tr>

...

now in my php code where I save the form to the database i would like to have a string of all the values in lstPermits

    $strTxtPermitArr[] = trim($_POST['lstPermits']);
foreach($strTxtPermitArr as $key => $value){
    $strTxtPermitNr .=  $key ." - " . $value ." ";
}

the values are not posted is it possible to read the selection objects options and values? — Vincent, Apr 24 '11 at 18:22
How is PHP supposed to know the options created by Javascript, if you don't POST or GET them to the PHP script? — Jürgen Thelen, Apr 24 '11 at 18:26
correct, the list I reuse later to rebuild a list where users can add or delete more permit data — Vincent, Apr 24 '11 at 18:29
can you come up with a solution? so I can save the permit list to a string and rebiuld later when needed — Vincent, Apr 24 '11 at 18:31
maybe i force, when the form gets recorded, all options to be selected in multiple select ? — Vincent, Apr 24 '11 at 18:33
You can not know all the values in PHP unless you POST them along. To do this just add a hidden text field and put all the option values in it with Javascript (since only Javascript knows what options there are). — Halcyon, Apr 24 '11 at 18:36
I think you want to POST all dynamically created option values, whether they were selected or not. Just use a `` field and populate the hidden field with all dynamically created option values. — Jürgen Thelen, Apr 24 '11 at 18:38
Jürgen I thought about this hidden field ... wanted to see if there would be another solution other then writing not only a append to the hidden field function as well I would need a delete a permit number from the hidden field string in case the user made a error. wished I just could save the permit list easier ... maybe the best is not to use a selection box — Vincent, Apr 24 '11 at 18:45

score 0 · Answer 1 · answered Apr 24 '11 at 18:37

you can do this simple by dynamic generating hidden field with all values - just edit your PermitAdd() to

add option as it does now
add value to your hidden element

Otherwise you can generate it in onSubmit action.

I think that select can send only selected values and not all of them.

score 0 · Answer 2 · edited May 23 '17 at 12:13

0

Maybe this question can give you some help. There are many questions of this type, just search for input, array and maybe php or html.

edited May 23 '17 at 12:13

Community

1
1

answered Apr 24 '11 at 18:44

Florian

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retrieve selection / list option values PHP

2 Answers2