need help with php getting a selection from a drop down

[bettor]

I have the following html code:
[HTML]<form method="get">
<select name="zoni" onchange="showCustomer(this.value)">
<option value="0" selected="selected">[Select]</option>
<option value="1">zone А</option>
<option value="2">zone B</option>
<option value="3">zone C</option></select></form>[/HTML]

I am trying to create an if ... else statement in php to detect which option was selected and to echo certain text. I can't get the php to do it. any ideas? Any help would be highly appreciated.

[Dreea]

if ($_GET['zoni']==$your_value) 
      echo "some text"; 
else echo "other text";
 

I'm not sure i understand where you want to place the if -then statement, but if you want to echo select text depending on whether the value was selected or not you can do it like that:
[HTML]
<form method="get">
<select name="zoni" onchange="showCustomer(this.value)">
<option value="0" selected="selected">[Select]<?php if ($_GET['zoni']=='0') echo "is selected"?></option>
<option value="1">zone А <?php if ($_GET['zoni']=='1') echo "is selected";?></option>
<option value="2">zone B <?php if ($_GET['zoni']=='2') echo "is selected";?></option>
<option value="3">zone C <?php if ($_GET['zoni']=='3') echo "is selected";?></option>
</select>
</form>[/HTML]

If you want to do this more elegant, you should try this:

<?php
$selectOptions[0]="[Select]";
$selectOptions[1]="Zone A";
$selectOptions[2]="Zone B";
$selectOptions[3]="Zone C";
$i=0;
?>
<select name="zoni" onchange="showCustomer(this.value)">
<?php
while (isset($selectOptions[$i]))
{
   $text=$selectOptions[$i];
   if ($_GET['zoni']==$i) $text.=" is selected";
   echo '
    <option value="'.$i.'">'.$text.'</option>
   '; 
   $i++;
}
?>
</select>
 

Hope it helps

[pbmods]

Heya, bettor.

PHP does not communicate with the browser that way. You'd have to either submit the form or else use an AJAX call to send the value to PHP.

[bettor]

if ($_GET['zoni']==$your_value) 
      echo "some text"; 
else echo "other text";
 

I'm not sure i understand where you want to place the if -then statement, but if you want to echo select text depending on whether the value was selected or not you can do it like that:
[HTML]
<form method="get">
<select name="zoni" onchange="showCustomer(this.value)">
<option value="0" selected="selected">[Select]<?php if ($_GET['zoni']=='0') echo "is selected"?></option>
<option value="1">zone А <?php if ($_GET['zoni']=='1') echo "is selected";?></option>
<option value="2">zone B <?php if ($_GET['zoni']=='2') echo "is selected";?></option>
<option value="3">zone C <?php if ($_GET['zoni']=='3') echo "is selected";?></option>
</select>
</form>[/HTML]

If you want to do this more elegant, you should try this:

<?php
$selectOptions[0]="[Select]";
$selectOptions[1]="Zone A";
$selectOptions[2]="Zone B";
$selectOptions[3]="Zone C";
$i=0;
?>
<select name="zoni" onchange="showCustomer(this.value)">
<?php
while (isset($selectOptions[$i]))
{
   $text=$selectOptions[$i];
   if ($_GET['zoni']==$i) $text.=" is selected";
   echo '
    <option value="'.$i.'">'.$text.'</option>
   '; 
   $i++;
}
?>
</select>
 

Hope it helps

I tried this:

if ($_GET['zoni']==$your_value) 
      echo "some text"; 
else echo "other text";
 

as you said but it doesn't work. I don't know why. What I am trying to achieve here is a drop down menu which displays different values according the selected option via ajax. I am sure my ajax works but my php file which the js connects to doesn't. I guess I am writing my php in a wrong way. I just want an if...else statement which is able to detect which option has been selected by the user but no success so far.... However, I need a separate php file that has only the php code in it so I can call it with JS. :(