two select boxes and populate to another form as hidden field doubt in php

[thread_PHP]

Hi all
I have one doubt

in a page i have two forms one form contains two select boxes with multiple selection

on change of 1st select box second select box will fill up and i need to pass these two values in second form in the same page and second form contains another select box data along with first two select boxes along with third select box data to next page on post value

please help me

thanks in advance

[dalecosp]

<?php

--- there's a beginning. Have you any code to show?

[thread_PHP]

<form name='frm_search_jobs' method='post' action='selectexample2.php'>
			<table border="0" cellpadding="0" cellspacing="0">						
			<tr>			
			<td width='166' valign='top' class="text">

			 <table border="0" cellpadding="0" cellspacing="0">
			<tr bgcolor="#75C5F0">
			<td  width="274" height="16" colspan='3' valign='middle' class='heading'><strong>&nbsp;<em>Search by Location</em></strong></td>				
			</tr>
			<tr>
			<td height="10" colspan='3'>

			<select name="cbo_location" id="cbo_location"  size="7" multiple onChange="if (cbo_location.value!='0') { submit(); }">
				 <option value="0" >-----ALL Locations -----</option>
				  <option value="1">America</option>
				    <option value="2">Brazil</option>
					  <option value="3">Canada</option>
					  <option value="4">China</option>
					  <option value="5">France</option>
					  <option value="6">India</option>
			</select>	

			</td>			
			</tr>


			</table>
		</td>
		<td width='4'></td>
		<td width='26'></td>
		<td width='4'></td>
		<td width="329" align='left' valign='top' class='text'>
			<table width="264" border="0" cellpadding="0" cellspacing="0">
			<tr bgcolor="#75C5F0">
			<td width="223" height="17" colspan='3' valign='middle' class='heading'><strong>&nbsp;<em>Search by Job Area</em> </strong></td>				
			</tr>
			<tr>
			<td height="10" colspan='3'>

			<select name="cbo_cat_id1" id="cbo_cat_id1"  size="12" multiple onchange="fillsearchvalue(this.value);">
					<option value="0" >-----------All------------ </option>
					  <?php  	 

						$mysql_cat="select category_name,sno from category";
						$rs_cat=$conn->Execute($mysql_cat);
							if($rs_cat)
							{
								 while(!$rs_cat->EOF)
								 {
									$lv_cat_id=$rs_cat->fields[1];
									$lv_cat=$rs_cat->fields[0];
									$sel = ($lv_cat_id==$lv_post_cat_id?"selected=selected":"");
									echo "<option value='$lv_cat_id' $sel>$lv_cat</option>";
									$rs_cat->MoveNext();
								}
							}

						?>
					  </select>			</td></tr>

			</table></form>
		</td>
		</tr>

		<form name='frm_search_location' method='post' action='result.php'>  
		 <input type="hidden" name="txt_emp_code" value="<? echo $lv_post_cat_id;?>">
		<tr><td> <input type="hidden" name="hdn_hidden_location" value="<? echo @$lv_post_location; ?>" >
		 <input type="hidden" name="hdn_hidden_category" value="<? echo @$lv_post_cat_id; ?>" >
		</td></tr>
		<tr><td  colspan="3" class='text' align="center">Sort By&nbsp;&nbsp;</td>
		<td colspan="2" align="left">
			<select name="cbo_sortby" id="cbo_sortby">
				<option value="0">Location</option>
				<option value="1">Function</option>
			</select> 
			</td></tr>
			<tr><td colspan='3' class='text' align="right"><input type="submit" value="Search Jobs" name="submit" class="Button1"></td><td colspan="2">&nbsp;&nbsp;&nbsp;&nbsp;</td></tr></form>			
	

please find my code

i am not getting values in this hidden fields

<input type="hidden" name="txt_emp_code" value="<? echo $lv_post_cat_id;?>">
			<tr><td> <input type="hidden" name="hdn_hidden_location" value="<? echo @$lv_post_location; ?>" >
			 <input type="hidden" name="hdn_hidden_category" value="<? echo @$lv_post_cat_id; ?>" >

[dalecosp]

Well, I'm not trying to offend, but it's not surprising, since I don't see any assignment of $lv_post_cat_id anywhere in what you've posted.

[thread_PHP]

hi dalecosp
thanks for reply
i have declared on top of the html page like this

<?php
$lv_post_cat_id=@$HTTP_POST_VARS["cbo_cat_id1"];
if($lv_post_cat_id !="") $lv_post_cat_id=@$HTTP_POST_VARS["cbo_cat_id1"];
$lv_post_location=@$HTTP_POST_VARS["cbo_location"];
if($lv_post_location !="") $lv_post_location=@$HTTP_POST_VARS["cbo_location"];
if($lv_post_location == "") $lv_post_location = @$HTTP_POST_VARS["cbo_location"];	
$m_emp_code=@$HTTP_POST_VARS["txt_emp_code"];
?>

thanks in advance for help