On Jul 10, 2007, at 3:59 PM, k w wrote:
I'm trying to make a button execute some php code when the button is
clicked. I'm not sure if it is the button i'm coding wrong or the php
code.
Here is the code I am using.
<?php
echo "<button action='<?php
mysqli_query($connect,$query)?>'Click</button>";
?>
I've got all my variables stored in the php page, and I know they are
all
correct. But when I push the button it does nothing. I'm not quite
sure what
I am doing wrong.
I have also tried
<input type=button value="Click" OnClick= "<?php
mysqli_query($connect,$query); ?>">
and
<form onclick="<?php mysqli_query($connect,$query); ?>">
<input type=button value="Click">
</form>
Obviously i'm a complete newbie. I'd appreciate any help. Thanks.
You will have to use a form and set the action to the page that runs
the code, It can be the same page.
In which case the action in the form open tag will be the name of the
present file.
You have to have code in the top of the page to catch a $_POST or $_GET
variable.
The button will look something like this:
<form action='your code processing page.php' method='get or post, you
choose' name='form1'> NAME HERE IS IMPORTANT
<input type='button' name='you name the button'
onclick='document.forms,form1.submit(form)'> THIS IS WHY THE FORM NAME
ASSIGNMENT IS IMPORTANT
<!-- The document.forms.form1.submit(form) line is javascript. In most
browsers the word form must be entered as an argument for it to work.
-->
<input type='hidden' name='you name this hidden field' value='some
value for the processing code to look for so it knows when to do your
processing'>
</form>
In the top of the page you can do:
$some_variable = '';
if($_POST[hidden field name] or $_GET[hidden field name])
{
// run your code here
// assign the result to $some_variable
// assign extra hidden field values to variables that should persist
across page loads
}
Then in the page in the location you want it:
<?php print $some_variable; ?>
there is one catch, if you have variable values in the page before you
click the button and you want them to be there when the page reloads,
or another page sends the result, these variable values will also have
to be loaded into hidden fields, sent to the server and re entered in
the
returned data.
You can add hidden fields like so:
<input type='hidden' name='unique name for each field' value='<?php
print $your_variable; ?>''>
This will work with single or double quotes around the php code block
Each of these extra form fields will have to be inside the same form
tag set that the button is in.
JK
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