3 A.M. and my head is going to explode();

[chads2k2]

Ok kids here is what I have. 🙂 I have a form. Yes lovely forms ... within that form I have a series of Checkboxes that I dynamically create. Makes them look really pretty and fully functional.

Here is what I am trying to do. I want to see which checkboxes are checked. That is all! However the complication comes when there are 300 of them. 🙂 Typing those out would be a bitch. So I am looking for a gigantic if(isset()) statement. Is there a way to see which variables are assigned when they come back from the user and if so what their value is?

If anyone can help me out that would be great! I am tired as hell and frustrated. 🙁

Any help would be more than appreciated!!

Chad

[Weedpacket]

[man]in_array[/man] would be useful here. In fact, [man]array_intersect[/man] combined with [man]array_keys[/man] would do it. Get the keys of all the elements in the $POST[] array, and then intersect them with an array of all the checkbox names. What drops out are all the checkboxes listed in the array that also appeared in $POST[].

[Frederick]

I really don't think there is a shortcut for some 300 checkboxes. I use an evaluation for my checkboxes if this helps

if ($row["field1"] == 1) { $ck1 = "checked"; } else { $ck1 = ""; }
echo "<input type=\"checkbox\" name=\"field1\" value=\"1\" $ck1 border=\"0\">\n";

[khjart]

If the names of the boxes are "box1", "box2" etc you could use a for loop to get the contents of the boxes. Something like this:

for ($i=1; $i <= 300; $i++) {
		$box = $_POST['box'.$i];
}

[chads2k2]

I will give that last one a roll when I get home.

BTW is the new standard going to $_POST['var']; for forms? I am out of the loop when it comes to that stuff. I am still tired and now I am at work and tired. Thank you for the posts! Also if anyone else has an idea of how else we could do this then I am more than interested in hearing it. I have tried all combinations when I get home under the sun. I will try again later and let you know how it goes. THANKS!!

Chad

[chads2k2]

Just got home and nope nothing is working. Any other ideas?

Here is what I am using to create the checkboxes.

            <?php
            include("connection.inc");

        $sql = "select * from categories";
        $result = mysql_query($sql);
        while ($row = mysql_fetch_array($result)) {
              $category_id = $row['category_id'];
              $category_name = $row['category_name'];

              echo "\r\r<p><strong>$category_name<br>";

              $sqla = "select * from subcategories where ref_cat='$category_id'";
              $resulta = mysql_query($sqla);
              while ($row = mysql_fetch_array($resulta)) {
                    $sub_id = $row['sub_catid'];
                    $sub_title = $row['sub_title'];
                    echo "\r<input name='checkbox$sub_id' type='checkbox' class='text_boxes_contractor' value='$sub_id'></strong>$sub_title<br>";
                    $i++;
              }
        }
        ?>

Don't worry about all the connections and all that. They work great! An example of how the HTML will roll out is below:

<p><strong>Concrete<br>
<input name='checkbox6' type='checkbox' class='text_boxes_contractor' value='6'></strong>Precast Pipe<br>
<input name='checkbox7' type='checkbox' class='text_boxes_contractor' value='7'></strong>Bulk Cement<br>
<input name='checkbox8' type='checkbox' class='text_boxes_contractor' value='8'></strong>Fittings<br>
<input name='checkbox9' type='checkbox' class='text_boxes_contractor' value='9'></strong>Pre-stressed<br>
<input name='checkbox10' type='checkbox' class='text_boxes_contractor' value='10'></strong>Paving<br>

ANY HELP WOULD BE GREATLY APPRECIATED! THANK YOU!!!

Chad

[Frederick]

haven't tried this but give it a shot. Thought it out looking at your code.

echo "\r<input name='checkbox$sub_id' type='checkbox' class='text_boxes_contractor' value='$sub_id' "; if ($sub_id == 1){echo "checked";} echo "></strong>$sub_title<br>";

[chads2k2]

Well one problem with that. I hate being a stickler, but I want the variable name to come across the form and then check from there. You know what I mean? Like it's a huge form of checkboxes (hopefully) and then when they hit submit it will go back to the page and it will do something. Let me post the entire code so I can explain my point a little better. Sorry.

<?php
//Gets the session variables.
include("session_check.inc");

//Defines the functions needed.
include("functions.inc");

if(isset($create_project))
{
   include("connection.inc");

   $sql = "select * from categories";
   $result = mysql_query($sql);
   while ($row = mysql_fetch_array($result)) {
         $category_id = $row['category_id'];
   		$category_name = $row['category_name'];

		$sqla = "select * from subcategories where ref_cat='$category_id'";
     $resulta = mysql_query($sqla);
     $MAX_NUM = mysql_num_rows($resulta);
	while ($row = mysql_fetch_array($resulta)) {
                    $sub_id = $row['sub_catid'];
			//I NEED IT TO DO SOMETHING HERE! :)
			//This is where I intend to check the variables.
			//Heck anything you can think of in here will be great.
		}
   }
	exit();
}
include("contractor_header.inc");
?>
        <tr>
          <td width="16" height="17"></td>
          <td width="575" valign="top" class="current_bids_box"> <span class="logged_in_text"><strong>&gt; Create A Project! &lt; </strong> </span></td>
        <td width="15"></td>
        </tr>
        <tr>
          <td height="6"></td>
          <td></td>
          <td></td>
        </tr>
        <tr>
          <td height="266"></td>
          <td valign="top" class="current_bids_box"><form name="contractor_project_insert" method="GET" action="contractor.create.project.php">
            <p><strong>PROJECT GENERAL DETAILS:<br>
                <span class="style1">* = REQUIRED!</span><br>
                <br>
            </strong><strong>
            </strong><span class="style1">*</span> Project Title:
              <input name="textfield" type="text" class="text_boxes_contractor" size="40">
                <br>
                <span class="style1">*</span> Describe Your Project:<br>
                <textarea name="textarea" cols="50" rows="8" class="text_boxes_contractor"></textarea>
                <br>
                <span class="style1">*</span> Days to leave on site:
                <select name="select" class="text_boxes_contractor">
                  <option value="5">5</option>
                  <option value="7">7</option>
                  <option value="14">14</option>
                </select>
                <br>
               Maximum Bid Accepted:
               <input name="textfield" type="text" class="text_boxes_contractor" size="30">
                <br>
                <br>
                <strong>PROJECT DETAILS:<br>
                </strong><span class="style1">*</span> State:
                <select name="select" class="text_boxes_contractor">
                  <option value="OH">OH</option>
                </select>
                <br>
                County:
                <input name="textfield" type="text" class="text_boxes_contractor" size="30">
                <br>
                Date Materials Are Needed:
                <input name="textfield" type="text" class="text_boxes_contractor" value="MM/DD/YYYY" size="15" maxlength="10">
                <br>
                <br>
                <strong>CHOOSE WHICH CATEGORIES YOU WOULD LIKE TO ADVERTISE IN:
              </strong>
            <blockquote>Choose the boxes that apply from the list below. If none are chosen then your project will not be sent to anyone. These categories will be used to cross refrence our database to put your project in the hands of only the suppliers who can offer the materials you need.</blockquote>


        <?php
        include("connection.inc");

        $sql = "select * from categories";
        $result = mysql_query($sql);
        while ($row = mysql_fetch_array($result)) {
              $category_id = $row['category_id'];
              $category_name = $row['category_name'];

              echo "\r\r<p><strong>$category_name<br>";

              $sqla = "select * from subcategories where ref_cat='$category_id'";
              $resulta = mysql_query($sqla);
              while ($row = mysql_fetch_array($resulta)) {
                    $sub_id = $row['sub_catid'];
                    $sub_title = $row['sub_title'];
                    echo "\r<input name='checkbox$sub_id' type='checkbox' class='text_boxes_contractor' value='$sub_id'></strong>$sub_title<br>";
                    $i++;
              }
        }
        ?>
        </p><p>
          <input name="create_project" type="submit" class="text_boxes_contractor" id="create_project" value="Create Project!">
        </p>
        </form>
	  </td>
    <td></td>
    </tr>
    <tr>
      <td height="2"></td>
      <td></td>
      <td></td>
    </tr>
</table>
</td>
  </tr>
<?php
include("contractor_footer.inc");
?>

Thank you for all yoru time and man it sucks but I solved this last night and didn't keep the answer. I thought I could make it better. Stupid me (3 A.M. does that to the best). Thanks everyone!

Chad

[chads2k2]

THANK YOU, to everyone who checked out this problem. Let me post the final solution here.

IT was taken off of php.net's site :: A user posted this:

epr3
11-Feb-2004 11:40 
there is more simple to generate the checkbox and recognize
which box is clicked

<?php 

echo '<script language="JavaScript" type="text/JavaScript">

var t = 0;

</script>';

for($i = 0 ;$i <5 ;$i++){

  echo '
  <script language="JavaScript" type="text/JavaScript">

  t++;

  document.writeln(t);
  document.writeln("<input type=\"checkbox\" name=\"cbx_foo[]\" value=\"" + t + "\">");

  </script>
  '; 
}

foreach($_POST['cbx_foo'] as $value) {

   echo "<BR>You clicked checkbox number " . $value . "\n";    

}

?> 

I just adapted the array idea and it worked fine. I don't know why it didn't dawn on me. Thanks so much to everyone!! Now I gotta go get coding, I am now a day behind schedule. :-D

Chad

[Weedpacket]

Originally posted by chads2k2
I will give that last one a roll when I get home.

BTW is the new standard going to $_POST['var']; for forms?

Introduced in 4.1.0, it's been the standard since 4.2.0.

[chads2k2]

Ohhh ... as you can see I just define the incoming by::

$incoming_var

I guess I will start using $_POST['incoming_var'] instead.

What is the advantage of that?

Chad

[Weedpacket]

Originally posted by chads2k2
I guess I will start using $_POST['incoming_var'] instead.

What is the advantage of that?

Um.... it's more likely to work? Plus it's a bit more secure and a bit faster (reasons for all three can be found in the manual).