Form Validation With PHP

PartyMarty

Ok I'm having some troubles and I'm sure I'm doing something stupid ok basic form processing As I see it. I'm using phpnuke and this is the basic form layout

echo "<FORM ACTION='modules.php?name=$module_name' method=POST>";

.....form stuff

... then the submit and reset buttons

echo "<input type='hidden' name='action' value='submit'>";
echo "<TR><TD><INPUT type = 'submit' value = 'Submit' onclick = 'return FormDataTest()' ></TD>";
echo "<TD><INPUT type = 'reset' value = 'Reset'></TD></TR>";

#----------------------------------------------------------------------------------------
function FormDataTest()
{
$Errors = Array();
$SubmitFail = true;
if (CheckNum($POST['AprtSize'],'F')== true)
{
$Errors[]= 'Please enter a valid Apartment Size';
$SubmitFail = false;
}
if (CheckNum($POST['AprtRooms'],'F')== true)
{
$Errors[]= 'Please enter a valid Number of Rooms';
$SubmitFail = false;
}
if (CheckNum($POST['RENT'],'F')== true)
{
$Errors[]= 'Please enter a valid Rent amount';
$SubmitFail = false;
}
if (CheckNum($POST['FindersFee'],'F')== true)
{
$Errors[]= 'Please enter a valid Finders fee amount ';
$SubmitFail = false;
}
if (CheckNum($POST['Invest'],'F')== true)
{
$Errors[]= 'Please enter a valid Invest amount';
$SubmitFail = false;
}
if (CheckNum($POST['Deposit'],'F')== true)
{
$Errors[]= 'Please enter a valid Deposit amount';
$SubmitFail = false;
}
if (CheckDistrict()== true)
{
$Errors[]= 'Please Select a District';
$SubmitFail = false;
}

DisplayAlert($Errors);
return $SubmitFail;

}

function DisplayAlert($Errors)
{

  ?> 
    <script><!-- 
        alert("hello"); 
    --></script> 
<?php ;

}

Ok This all kind of works except that the alert is displayed to late.
the page has allready started updating when the alert is displayed. I think I need to hold the page until the onclick command returns but i have no idea how. Have look is you have any comments please please post them any thing would help

PartyMarty

Ok after reading some thing on the web I'm not sure this attemp is correct. But I have to say I am now completely stumped on this problem

Could somebody either post or point me to a simple example of a form where form vaildation is done using php once the submit button is pressed.

I would like to get away from the alert function. What I would really like to do is have the user click on submit the form validation occurs and either the form is submited or the user present the form again with the values still entered and a list on the top of the page displaying the errors and also all the failed fields marked with a red star. If anybody has a simple example of this please post it 🙂

thorpe

your trying to do client side validation with serverside php. onsubmit events are client side ie javascript.

just set the forms action to point to your validation script. the validation script can then validate the form, and submit it to wherever it needs to go.

of course this could all be done in a single page too. just point the forms action back to itself, then check if the form has been submitted.

something like

<?php

if (isset($_POST["submit"]) {

// validate and submit form

} else {

// display the form

}