Thursday, 4 June 2015

Simple script to passing persistent and growing array between recalls of one page (manipulate little stack).

<html>
<body>

<form method=post >
<select name=choices[] multiple>
<option>uno
<option>due
<option>tre
<option>quattro
<option>cinque
</select>
<input type=submit value=Ok>
<hr>
<?php
    $lastInsert=$HTTP_POST_VARS[choices];
    
    if ($lastInsert) {
        
        $n0=count($stack);
        for ($i=0;$i<$n0;$i++) {
            echo "<input type=hidden name=\"stack[]\" value=\"$stack
[$i]\" >";
        }    
        
        $n1=count($lastInsert);
        for ($i=0;$i<$n1;$i++) {
            echo "<input type=hidden name=\"stack[]\" value=
\"$lastInsert[$i]\" >";
        }    
                
/*Uncomment this to see temporary values: only for debugging purpouses.        
    
    
        for($i=0;$i<$n0;$i++) {
            echo "<h2>STACK:</h2> $stack[$i]<br>";
        }
        
        for($i=0;$i<$n1;$i++) {
            $value=$lastInsert[$i];
            echo "<h2>lastInsert:</h2> $value<br>";
        }
    
*/
    }

?>

<?php
    $stack=$HTTP_POST_VARS[stack];
    $n=count($stack);
    for($i=0;$i<$n;$i++) {
        echo "$i) ".$stack[$i]."<br>";
    }
    $ultimi=$HTTP_POST_VARS[choices];
    $n=count($ultimi);
    for($i=0;$i<$n;$i++) {
        echo "-> ".$ultimi[$i]."<br>";
    }
?>
</form>
</body>
</html>

0 comments:

Post a Comment

Subscribe to: Post Comments (Atom)