sessions and value = 0

[paldo]

I'm still working on sessions.

Here my page1:

<?php
session_start();

echo "<form name=\"aaaa\" method=\"post\"  action=\"sessions_select_page2.php\">";
?>

<?php



function select( $selection , $values )
{
    echo "<select name=\"$selection\">\n";
    foreach( $values AS $val ) {
        if ( isset( $_SESSION["$selection"] ) AND $_SESSION["$selection"] == $val )
            $selected = " selected=\"selected\"";
        else
            $selected = "";

    echo "\t<option value=\"$val\"$selected>$val</option>\n";
}
print "</select>\n";
}


echo 'Please choose item 1:'; select( "selection1" , array( "0", "6", "12", "18" ) );



echo 'Please choose item 2: '; select( "selection2" , array( "0", "6", "12", "18" ) );




?>

Is the value of the selected item equal to 0 (zero), there should not be the print out on page 2 . There should be a print out only for values bigger then 0 (zero). How to construct this "if else " function?

Here page 2:

<?php
session_start();

$_SESSION['selection1'] = $_POST['selection1'];

$_SESSION['selection2'] = $_POST['selection2'];

?>

<?php

$selection1 = $_POST['selection1'];
$selection2 = $_POST['selection2'];

 print"You choose: $selection1 item1<br/>";
 print"You choose: $selection2 item2";

 ?>

<p>

 <input type="submit" name="submit"  value="  confirm" onClick="location.href='sessions_select_page3.php'">

</p> 

Thanks for your help.

See here for this example.

[paldo]

It works and I'm proud but I don't know if the syntax is clean.

<?php
session_start();

$_SESSION['selection1'] = $_POST['selection1'];

$_SESSION['selection2'] = $_POST['selection2'];

?>

<?php


$selection1 = $_POST['selection1'];
$selection2 = $_POST['selection2'];


if ( $_SESSION['selection1'] != 0) {

    print"You choose $selection1 item1.<br/> "; 

} 

if ( $_SESSION['selection2'] != 0) {

    print"You choose $selection2 item2.<br/> "; 

}



 ?>

<p>

 <input type="submit" name="submit"  value="  confirm" onClick="location.href='sessions_select_page3.php'">

</p> 

[bradgrafelman]

Are the selections related? (For example, are they all part of a single group?) If so, I wouldn't give the HTML elements names' numbers at the end, I'd name all of them with the same name and append '[]' to the end (e.g. "selection[]"). That way, $_POST['selection'] would be an array of selected values; you could then use a [man]foreach/man loop to loop over all selections and do whatever processing you want.