php question

[Mike Teezie]

I know next to nothing about php.

What I'm trying to do, is get my php to ignore (and not output) the boxes that aren't checked.

Here is my html:

      <form action="checkboxes.php" method="post">
                
                <img src="http://mnjordan.com/images/doggie.jpg">
				<h3>DD_01</h3>
				<br>
                <input type="checkbox" name="4x6"<?php if($4x6 == "on"){echo" CHECKED";}?>4x6
			<input type="checkbox" name="5x5"<?php if($5x5 == "on"){echo" CHECKED";}?>5x5
                <input type="checkbox" name="5x7"<?php if($5x7 == "on"){echo" CHECKED";}?>5x7
                <input type="checkbox" name="8x10"<?php if($8x10 == "on"){echo" CHECKED";}?>8x10
                <br>
			<input type="checkbox" name="8x12"<?php if($8x12 == "on"){echo" CHECKED";}?>8x12
			<input type="checkbox" name="10x10"<?php if($10x10 == "on"){echo" CHECKED";}?>10x10
                <input type="checkbox" name="11x14"<?php if($11x14 == "on"){echo" CHECKED";}?>11x14
                <input type="checkbox" name="12x18"<?php if($12x18 == "on"){echo" CHECKED";}?>12x18
			<br>
			<input type="checkbox" name="16x20"<?php if($16x20 == "on"){echo" CHECKED";}?>16x20
			<input type="checkbox" name="8_Wal"<?php if($8_Wal == "on"){echo" CHECKED";}?>8 wallets
                <input type="checkbox" name="24_Wal"<?php if($24_Wal == "on"){echo" CHECKED";}?>24 wallets
                <br>
				<input type="submit" name="submit" value="Submit">
            </form>

And here is my php:

<?php if (condition) {echo $_POST["4x6"];} ?>4x6
<br><?php if (condition) {echo $_POST["5x5"];} ?>5x5
<br><?php if (condition) {echo $_POST["5x7"];} ?>5x7
<br><?php if (condition) {echo $_POST["8x10"];} ?>8x10
<br><?php if (condition) {echo $_POST["8x12"];} ?>8x12
<br><?php if (condition) {echo $_POST["10x10"];} ?>10x10
<br><?php if (condition) {echo $_POST["11x14"];} ?>11x14
<br><?php if (condition) {echo $_POST["12x18"];} ?>12x18
<br><?php if (condition) {echo $_POST["16x20"];} ?>16x20
<br><?php if (condition) {echo $_POST["8_Wal"];} ?>8_Wal
<br><?php if (condition) {echo $_POST["24_Wal"];} ?>24_Wal

Here is a link:

http://mnjordan.com/checkboxes.htm

What I would like to see the php generate is - say you selected 4x6 and 5x7, just 4x6 and 5x7 on the page.

Like I said, my knowledge of php is non-existant. Please don't flame me if I've done something incredibly dumb.

Thanks!

 

[nightelf]

You need to set a value to each checkbox.

<input type="checkbox" name="4x6" value="true" <?php if ($_POST['4x6']) echo 'checked="checked"'; ?>/> 4x6

<?php if ($_POST['4x6']) echo '4x6<br />'; ?>

 

[pengu]

i suggest you do something a bit more robust, such as this:

<?php

function checkVar($varName, $checkBox = false)
{
	if(isset($_POST[$varName]) && !empty($_POST[$varName]))
	{
		if($checkBox)
		{
			echo 'checked="checked"';
		}
		else
		{
			echo $_POST[$varName];
		}
	}
}


?>
<input type="checkbox" name="4x6" value="true" <?php checkVar('4x6', true); ?>/> 4x6

<?php checkVar('4x6'); ?><br />

 

[Mike Teezie]

Guys, thanks so much for the help!

If I wanted to use a text field, so a user could input a value there, how much more difficult would it be?

For instance, if say a person put a "2" in the text field next to 4x6, I would like it to output "4x6 - 2" or something similar.

Seriously though, thanks for all the help guys.

 

[pengu]

then it becomes:

<?php

function checkVar($varName)
{
    if(isset($_POST[$varName]) && !empty($_POST[$varName]))
    {
     echo $_POST[$varName];
    }
}


?>
<input type="text" name="4x6" value="<? checkVar('4x6'); ?>"/> 4x6

4x6 - <?php checkVar('4x6'); ?><br />

 

[Mike Teezie]

Thanks pengu!

One more question - if no value is entered in a field, I want nothing at all to show up.

"4x6 -" <?php checkVar('4x6'); ?><br />

I realize the "4x6 -" outside the php is being generated by html. So I guess I'm asking how to make it show up only if a value is entered in the form.

Here are the test files I'm working with:

http://mnjordan.com/textfields2.htm and

http://mnjordan.com/order.php

Thanks a ton, you are teaching me a lot!

 

[pengu]

ok, so you only want it to actually the label for 4x6 if it has a value?

the simplest way (if you aren't doing anything else in the same form) would be this:

foreach($_POST as $key => $val)
{
if($key != 'submit_button_name')
{
if(!empty($_POST[$key]))
{
echo("$key: $_POST[$key] <br />");
}

} 

}

extend the first if statement to ignore any other fields you have. the other way would be to set the input boxes to have the same name, such as '<input type="text" name="myField[4x6]" />'

and then do a foreach on $_POST[myField[]]. PHP will recognize that you want the fields with the [] in the name as an array.