CSC220 Self Reloading Php Form
--D. Thiebaut 23:30, 5 October 2010 (UTC)
<HTML>
<HEAD>
<TITLE>CSC220 -- ReloadForm</TITLE>
<meta http-equiv="Pragma" content="no-cache">
</HEAD>
<BODY>
<font size="small">(<a href="reloadform.txt">source</a>)</font><br>
<h1>Example of a form page in Php that calls itself</h1>
<?php
//--------------------------------------------------------------------
// testPage: checks to see if all three fields are given. If one or
// more missing, displays apropriate message.
//
//--------------------------------------------------------------------
function testPage( $name, $age, $occupation ) {
if ( !empty( $name ) && !empty( $age ) && !empty( $occupation ) ) {
displayFinalPage( $name, $age, $occupation );
return 3;
}
$params = 0;
if ( !empty( $name ) ) {
printf( "<h2>Hello %s</h2>\n", $name );
$params++;
}
else
printf( "<h2>Dear mysterious visitor...</h2>\n" );
if ( !empty( $age ) ) {
printf ("<P>You were born in %d...", 2010-$age );
$params++;
}
else
printf ("<P>We need your age to continue this application...\n" );
if ( !empty( $occupation ) ) {
printf ("<P>We have recorded that your occupation is %s\n", $occupation );
$params++;
}
else
printf( "<P>We are missing your occupation...\n" );
return $params;
}
//--------------------------------------------------------------------
// displayFinalpage: displays the final message of congratulations
//--------------------------------------------------------------------
function displayFinalPage( $name, $age, $occupation ) {
print "<h1>Dear $name</h1>
Thank you for providing us with the information we requested.
We have recorded your age of $age, and your occupation ($occupation).
<P>
Have a good day!";
}
//--------------------------------------------------------------------
// displayRequestArray: debug function to show contents of $_REQUEST
//--------------------------------------------------------------------
function displayRequestArray() {
print "<table width=\"50%\"><tr bgcolor=\"\#cc99cc\"><td><pre>\$_REQUEST = ";
print_r( $_REQUEST );
print "</pre></td></tr></table><P><P>\n";
}
//--- get the form parameters ---
$name = $_REQUEST['name'];
$age = $_REQUEST['age'];
$occu = $_REQUEST['occupation'];
//--- did we get all 3 params? ---
$noParamsSet = testPage( $name, $age, $occu );
if ( $noParamsSet < 3 ) {
printf( '<FORM ACTION="reloadform.php" METHOD="POST">
<P>
Name: <INPUT TYPE="text" NAME="name" VALUE="%s" SIZE="40">
<P>
Age: <INPUT TYPE="text" NAME="age" VALUE="%s" SIZE="5">
<P>
Occupation: <INPUT TYPE="text" NAME="occupation" VALUE="%s" SIZE="40">
<P>
<INPUT TYPE="SUBMIT" VALUE="Send">
</FORM>', $name, $age, $occu );
}
//--- for debugging ---
displayRequestArray();
?>
<P>
</BODY>
</HTML>
