Ciao
ho trovato in questo sito web tra gli esempi questo script per generare immagini attraverso del codice php.

Pultroppo non sono molto brava con il codice......... e ho riscontrato qualche difficoltà.

Il testo originale era questo:
Codice:


codice:
<?php
/* form.php
Click Captcha Ver.1
Created on: 4/17/2007 by Ron Hickey
http://6tx.net/sc */
//buffer
ob_start('ob_gzhandler');
session_start();

// if submit
if (($_POST[x])&&(substr($_SESSION[igif], 17) === $_SESSION['afloat'])){

// posted
$x = $_POST[x];

// you can remove 4 lines below they are for demo
$fname = strip_tags($_POST[fname]);
$lname = strip_tags($_POST[lname]);
$fname = stripslashes(substr($fname, 0, 12));
$lname = stripslashes(substr($lname, 0, 12));
// you can remove 4 lines above they are for demo

// decode, strip string and round numbers
$a = base64_decode($_SESSION['afloat']);
$b = 0 + $a;
$a = explode(" ", $a);
$a = $a[3];
$bb = round($b);
$aa = round($a);

// x coords
$gc = explode(" ", '0 19 40 60 82 104 79 100 121 142 163 185');

// check if correct number has been clicked
$ac = $aa + 6;
if ($bb <= $aa){ $ac = $bb + 1; }

//demo wrong number clicked error message below
$mess = "ERROR: Sorry " . stripslashes($fname . "_" . $lname) . " wrong number clicked";
// if correct number clicked success
if (($x >= $gc[$ac-1]) && ($x <= $gc[$ac])){
// submit your form

//demo SUCCESS message below
$mess = "SUCCESS: Yes " . stripslashes($fname . "_" . $lname) . " correct number clicked";
}

//demo alert message below
?>
<script>
alert("<?=$mess;?>");
window.location = window.location;
</script>
<?
session_unset();
session_destroy();
ob_end_flush();
exit;
}
// afloat = base64_encoded random string
$afloat = base64_encode(" " . $num1 = rand(0,3) . "." . $num2 = rand(100,999) . "
 Float " . $num3 = rand(1,4) . "." . $num4 = rand(100,999) . "  ");

// rectangle x coord

$aler = "> 78";
if(round($num1 . "." . $num2) <= round($num3 . "." . $num4)) {$aler = "< 105";}

// create random image
$_SESSION[igif] = "create_gif.php?a=" . $afloat . "";
$_SESSION['afloat'] = $afloat;

?>
<html>
<head>
<style type="text/css">
/* click image */
.cd {
width: 185px;
height: 15px;
background-image: url(<?=$_SESSION[igif];?>);
background-repeat: no-repeat;
position: relative;
left:<?=rand(-100,100);?>px;
bottom:<?=rand(55,80);?>px;
z-index: 2;
}
</style>
<script language="JavaScript">
// submit form func
function submitform() {

// You can remove 6 lines below they are for demo
if (document.xcoords.fname.value == "") {
alert("Please Enter First Name.");
return false;}
if (document.xcoords.lname.value == "") {
alert("Please Enter Last Name.");
return false; }
// You can remove 6 lines above they are for demo

// if box coord submit else rectangle coord alert
// Do not edit  javascript below this line. you can edit the alert message

if (document.xcoords.x.value <?=$aler;?>) {
document.xcoords.submit();

} else {
alert("Click number in square identicale to number in rectangle to submit.");
}
}
// image x value
function xcoord(event) {
image = event.offsetX?(event.offsetX):event.pageX-document.getElementById("coord").offsetLeft;
document.xcoords.x.value = image;
}
</script>
</head>
<body bgcolor="#FFFFFF">
<div align=center>
<table border="0" cellspacing="5" cellpadding="5">
<tr>
<td align="center" style="font: 12px Arial; font-weight: normal; color: black; border-color: maroon; border-style: solid; border-width: 1px; background: #FFFFFF; height: 20px; width: 185px; padding-top: 5px; padding-right: 5px; padding-bottom: 5px; padding-left: 5px; position: relative; font-weight: normal;">Click Captcha Demo 

</td>
</tr>
</table>
<table border="0">
<tr>
<td>
<form name="xcoords" action="<?=$_SERVER['PHP_SELF']; ?>" method="post">
<table border="0" bgcolor="#FFFFFF" cellpadding="5" cellspacing="5" width="400" style="border: 1px solid maroon">
<tr>
<td align="right">
<table border="0" cellpadding="5" cellspacing="5" width="300" bgcolor="#FFFFFF">
<tr>
<td align="right" valign="middle" style="width: 70px; font: 12px Arial, Helvetica, sans-serif; color: #000000; background: #FFFFFF; border-left-width: 1px; border-left-style: solid; border-left-color: maroon; border-bottom-style: solid; border-bottom-color: maroon; border-bottom-width: 1px; padding-top: 2px; padding-right: 5px; padding-bottom: 1px; padding-left: 2px;">First Name:</td>
<td align="left" valign="top"><input type="text" name="fname" value="First" style="font: 12px Arial, Helvetica, sans-serif; color: maroon; border-color: maroon; border-style: solid; border-width: 1px; background: #FFFF99; height: 20px; width: 60px; position: relative; font-weight: normal; letter-spacing: 1px; text-align: left; padding-left: 3px;"></td>
</tr>
<tr>
<td align="right" valign="middle" style="width: 70px; font: 12px Arial, Helvetica, sans-serif; color: #000000; background: #FFFFFF; border-left-width: 1px; border-left-style: solid; border-left-color: maroon; border-bottom-style: solid; border-bottom-color: maroon; border-bottom-width: 1px; padding-top: 2px; padding-right: 5px; padding-bottom: 1px; padding-left: 2px;">Last Name:</td>
<td align="left" valign="top"><input type="text" name="lname" value="Last" style="font: 12px Arial, Helvetica, sans-serif; color: maroon; border-color: maroon; border-style: solid; border-width: 1px; background: #FFFF99; height: 20px; width: 60px; position: relative; font-weight: normal; letter-spacing: 1px; text-align: left; padding-left: 3px;"></td>
</tr>
</table>
</td>
</tr><input type="hidden" name="x" /><tr>
<td align="center"><table border="0"><tr><td style="font: 11px Arial; color: maroon; border-color: maroon; border-style: solid; border-width: 1px; background: #F8F8FF; height: 30px; width: 189px; padding-top: 5px; padding-right: 5px; padding-bottom: 5px; padding-left: 5px; position: relative; font-weight: normal;">Submit: click number in image square identicale to number in image rectangle</td>
</tr> <tr><td>

</td></tr>
</table></td>
</tr></table></form></td><tr>

<td width="390" align="center" valign="top">

<div id="coord" onclick="submitform(xcoord(event))" class="cd"></div></td>
</tr></table></div>
<? ob_end_flush(); ?>
e la pagina per generare immagini che porta questo codice:
Codice:
codice:
 
<?php
/* create_gif.php
Click Captcha Ver.1
Created on: 4/17/2007 by Ron Hickey
http://6tx.net/sc */
//buffer
ob_start('ob_gzhandler');
session_start();
//DEC 67
//get a and decode
//
$a = $_GET['a'];
if ($a == $_SESSION['afloat']){
$a = base64_decode($a);
$im = imagecreatetruecolor (185, 15);
//DEC 79
//random numbers
//
$myn =  array($ooon = rand(81,99), $tooo = rand(61,$ooon-1), $trif = rand(41,$tooo-1),
$foey = rand(21,$trif-1), $flit = rand(11,$foey-1));
$rn = array_rand($myn, 5);
$mynum = " " . $myn[$rn[0]] . " " . $myn[$rn[1]] . " " . $myn[$rn[2]] . " " . $myn[$rn[3]] . " " . $myn[$rn[4]] . "";

//DEC 68
//get first numbers from string b.bbb"
//
$b = 0 + $a;
//DEC 69
//get last numbers from string "a.aaa
//
$a = explode(" ", $a);
$a = $a[3];
//DEC 66
//round < a.aaa> to nearest number = round a
//
$aa = round($a);
//DEC 89
//round < b.bbb > to nearest number = round b
//
$bb = round($b);
//DEC 82
//string, random click number and line coord
//
$na = 79;
$nb = 185;
$nc = 82;
$nd = 182;
$ims = -1;
$ab = explode(" ", $mynum);
$mystring = "Click $ab[$aa]  $mynum";
//DEC 79
//if bb <= aa reverse string and line coord. click number aa = bb + 1
//
if ($bb <= $aa){
$aa = $bb + 1;
$mystring = "" . $mynum . " Click $ab[$aa] ";
$na = 0;
$nb = 106;
$nc = 4;
$nd = 104;
$ims = -9;
}
//DEC 78
//random image color
//
$change = rand(1,9);
$lime = imagecolorallocate($im,0,255,0);
$yellow = imagecolorallocate($im,255,255,0);
$white = imagecolorallocate($im,255,255,255);
$lgray = imagecolorallocate($im,206,206,206);
$gray = imagecolorallocate($im,115,115,115);
$black = imagecolorallocate($im,0,0,0);
$green = imagecolorallocate($im,1,107,0);
$grc = " $lime $yellow $white $lgray $yellow $white $gray $black $green";
$rc = explode(" ", $grc);
$bgc = $rc[$change];
//DEC 72
//line & number colors
//
$bc = imagecolorallocate ($im, 0, 0, 0);
$rd = imagecolorallocate ($im, 255, 0, 0);
$wh = imagecolorallocate ($im, 255, 255, 255);
//DEC 73
//if color = this change line & number color
//
if (($change > 3) && ($change < 7)) { $bc = $rd;}
elseif ($change > 6) { $bc = $wh;}
//DEC 67
//fill image color
//
imagefilledrectangle ($im, 1, 1, 184, 15, $bgc);
imagerectangle ($im, 0, 0, 184, 14, $bc);
//DEC 75
//vertical lines
//
for($i=$na;$i<=$nb;$i+=21)
imageline($im,$i,0,$i,15,$bc);

//DEC 69
//image string
//
imagestring ($im, 3, $ims, 1, " $mystring", $bc);
//DEC 89
//header content
//
header("Content-Type: image/gif");
//DEC 48
//send image
//
imagegif($im);
//DEC 55
//destroy image
//
imagedestroy($im);
}
//flush
ob_end_flush();
?>
Adesso io stò cercando di adattare il codice alla mia pagina web che vedete qui:
www.designgroup.it

Ma come potete vedere voi stessi la pagina non funziona come dovrebbe, non viene carricata nessuna immagine. ho fatto numerosi tentavi ma senza risultato.

Poi vorrei che cliccando sul tasto il tutto fosse inviato a questa pagina contatti

????????? vi chiedo un aiutino per finire queste due pagine.



Vi mando anche il link ai due esempi che ho scaricato, magari ho saltato qualcosa per questo non funzionano:

Pagina script
Pagina immagine

Grazie a tutti
Sabri