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passing varaible between pages ussing sessions

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Join Date: Feb 2008

Posts: 39

Reputation: mr_scooby is an unknown quantity at this point

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mr_scooby

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passing varaible between pages ussing sessions

Oct 13th, 2009

Hello, I have 2 php forms, the first that takes the input and sends it to the second form which checks to see if the fields are empty.

What I have to do is if both fields are not entered is return to the main page and highlight the field/s that is not fill with an asterix, If one of the fields was entered I need to return that value to the textbox on the first page and then link back to the first page to enter in the missing field.

here is the first page input.php

 Help with Code Tags 
 PHP Syntax (Toggle Plain Text) 
$asterixFirst = "";
$asterixLast = "";
// check for asterix value
if ($checkFirst == false)
{
	$asterixFirst = "* required";
}
else
{
	$asterixFirst = "";
}
if ($checkLast == false)
{
	$asterixLast = "* required";
}
else
{
	$asterixLast = "";
}
 
 
echo "<form action=\"inputcheck1.php\" method=\"post\">";
echo "<p>Enter first name: <input type=\"text\" name=\"first\" />", $asterixFirst, "</p>";
echo "<p>Enter last name: <input type=\"text\" name=\"last\"/>", $asterixLast, "</p>";
echo "<input type=\"submit\" value=\"Process\"/>";
 
echo "</form>";
?>
</body>
</html>
$asterixFirst = "";
$asterixLast = "";
// check for asterix value
if ($checkFirst == false)
{
	$asterixFirst = "* required";
}
else
{
	$asterixFirst = "";
}
if ($checkLast == false)
{
	$asterixLast = "* required";
}
else
{
	$asterixLast = "";
}


echo "<form action=\"inputcheck1.php\" method=\"post\">";
echo "<p>Enter first name: <input type=\"text\" name=\"first\" />", $asterixFirst, "</p>";
echo "<p>Enter last name: <input type=\"text\" name=\"last\"/>", $asterixLast, "</p>";
echo "<input type=\"submit\" value=\"Process\"/>";

echo "</form>";
?>
</body>
</html>

here is the 2nd page

 Help with Code Tags 
 PHP Syntax (Toggle Plain Text) 
<?php
if ((checkFirst() == false) && (checkLast() == true))
{
	echo "First name needed";
}
elseif ((checkFirst() == true) && (checkLast() == false))
{
	echo "Last name needed";	
}
elseif ((checkFirst() == false) && (checkLast() == false))
{
	echo "Both fields need filing";
}
else
{
	echo "First Name: ", $_POST['first'];
	echo "<p>Last Name: ", $_POST['last'], "</p>";
	echo "<a href=\"emptyinput1.php\">return to main page</a>";
}
?>
 
<?php
function checkFirst()
{	
	$_POST['first'] = trim($_POST['first']);
	if (isset($_POST['first']) && $_POST['first'] !== '')
	{	
		//echo "First Name: ", $_POST['first'];
		return true;
	}
	else
	{
		return false;
	}
}
 
function checkLast()
{
	$_POST['last'] = trim($_POST['last']);
	if (isset($_POST['last']) && $_POST['last'] !== '')
	{	
		//echo "<p>Last Name: ", $_POST['last'], "</p>";
		return true;
	}
	else
	{		
		return false;
	}
}
?>
<?php
if ((checkFirst() == false) && (checkLast() == true))
{
	echo "First name needed";
}
elseif ((checkFirst() == true) && (checkLast() == false))
{
	echo "Last name needed";	
}
elseif ((checkFirst() == false) && (checkLast() == false))
{
	echo "Both fields need filing";
}
else
{
	echo "First Name: ", $_POST['first'];
	echo "<p>Last Name: ", $_POST['last'], "</p>";
	echo "<a href=\"emptyinput1.php\">return to main page</a>";
}
?>

<?php
function checkFirst()
{	
	$_POST['first'] = trim($_POST['first']);
	if (isset($_POST['first']) && $_POST['first'] !== '')
	{	
		//echo "First Name: ", $_POST['first'];
		return true;
	}
	else
	{
		return false;
	}
}
	
function checkLast()
{
	$_POST['last'] = trim($_POST['last']);
	if (isset($_POST['last']) && $_POST['last'] !== '')
	{	
		//echo "<p>Last Name: ", $_POST['last'], "</p>";
		return true;
	}
	else
	{		
		return false;
	}
}
?>

I have the checks working ok, just not sure how to pass the value of a entered field gathered by form 2 back to that field on the first form and then how to send the asterix check either.

I assuming it needs to be done using the $_SESSION command somehow.

any help much appreciated

Last edited by mr_scooby; Oct 13th, 2009 at 3:48 am.

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Join Date: Jul 2006

Posts: 867

Reputation: pritaeas will become famous soon enough

Solved Threads: 140

pritaeas

Offline

Practically a Posting Shark

Oct 13th, 2009

Insert this at the top of both pages:

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
if (! session_id())
  session_start();
if (! session_id())
  session_start();

Then you can use

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
$_SESSION['first'] = $_POST['first'];
$_SESSION['first'] = $_POST['first'];

in the second file. In the first file you can use:

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
if (isset($_SESSION['first']))
  // first name was set by second page, you can use it
if (isset($_SESSION['first']))
  // first name was set by second page, you can use it