Ca m'afficehe une icone d'image qui n'exitse pas voici le code de image.php :
<?php
include 'captcha.php';
/*
* Préparation des paramètres
*/
if( is_array($captcha['font_file']) )
$captcha['font_file'] = $captcha['font_file'][ rand(0,count($captcha['font_file'])-1) ];
$captcha['font_file'] = font_path($captcha['font_file']);
$captcha['nb_char'] = rand($captcha['nb_char_min'], $captcha['nb_char_max']);
$captcha['font_color'] = convert_color($captcha['font_color']);
$captcha['background_color'] = convert_color($captcha['background_color']);
$captcha['border_color'] = convert_color($captcha['border_color']);
/*
* Génération du code
*/
$code = '';
for($i=0; $i<$captcha['nb_char']; $i++)
{
$char = $captcha['char_list'][ rand(0,strlen($captcha['char_list'])-1) ];
if( !strstr($code, $char) ) $code .= $char;
else $i--;
}
if( !$captcha['casse_sensitive'] ) $code = strtoupper($code);
$_SESSION['captcha_code'] = md5($code);
/*
* Génération de l'image
*/
$image = imageCreate($captcha['width'], $captcha['height']);
$background_color = imageColorAllocate(
$image,
$captcha['background_color']['R'],
$captcha['background_color']['G'],
$captcha['background_color']['B']
);
$last_x = 5;
for($i=0; $i<strlen($code) ; $i++)
{
$font_color = color_variation($captcha['font_color'], $captcha['font_color_variation']);
$size = rand($captcha['font_size_min'], $captcha['font_size_max']);
$angle = $captcha['rotation'] - rand(0, 2*$captcha['rotation']);
$x = $last_x;
$last_x += $size+5;
$y = $captcha['height']-($captcha['height']-$size)/2;
$font_color = imageColorAllocate(
$image,
$font_color['R'],
$font_color['G'],
$font_color['B']
);
$char = $code[$i];
imagettftext(
$image,
$size,
$angle,
$x,
$y,
$font_color,
$captcha['font_file'],
$char
);
}
$decallage = ($captcha['width']-$last_x)/2;
// On centre le texte
$image2 = imageCreate($captcha['width'], $captcha['height']);
$background_color = imageColorAllocate(
$image2,
$captcha['background_color']['R'],
$captcha['background_color']['G'],
$captcha['background_color']['B']
);
imagecopy(
$image2,
$image,
$decallage,
0,
0,
0,
$captcha['width'],
$captcha['height']
);
/*
* Affichage de l'image
*/
header('Content-type: image/jpeg');
header('Cache-Control: no-store, no-cache, must-revalidate');
imagejpeg($image2,'',$captcha['quality']);
imageDestroy($image);
imageDestroy($image2);
/*
* Diverses fonctions utiles
*/
function convert_color($hexcolor)
{
$hexcolor = ltrim($hexcolor, '#');
$color['R'] = hexdec(substr($hexcolor,0,2));
$color['G'] = hexdec(substr($hexcolor,2,2));
$color['B'] = hexdec(substr($hexcolor,4,2));
return $color;
}
function color_variation($color, $variation)
{
if( is_array($color) )
{
$color['R'] = color_variation($color['R'], $variation);
$color['G'] = color_variation($color['G'], $variation);
$color['B'] = color_variation($color['B'], $variation);
}
else
{
$v = $variation - rand(0, 2*$variation);
$color += $v;
if($color<0) $color = 0;
if($color>255) $color = 255;
}
return $color;
}
function font_path($font_file)
{
return realpath('./fonts') . ((ereg('/',realpath('./fonts')))?'/':'\\') . $font_file;
}
?>
et de captcha.php : <?php
/*
* Tiny Captcha
* Réalisé par seebz - http://seebz.be
*
* Source et documentation :
* http://seebz.be/blog/38-tiny-captcha-un-captcha-anti-spam-leger-et-personnalisable.html
*
*/
/*
* Configuration
*/
$captcha['width'] = 80;
$captcha['height'] = 20;
$captcha['font_file'] = 'luggerbu.ttf';
$captcha['font_color'] = '000000';
$captcha['font_color_variation'] = 150;
$captcha['font_size_min'] = 11;
$captcha['font_size_max'] = 13;
$captcha['background_color'] = 'ffffff';
$captcha['char_list'] = 'BCDJKLMNPRTWXY389';
$captcha['nb_char_min'] = 4;
$captcha['nb_char_max'] = 4;
$captcha['rotation'] = 20;
$captcha['quality'] = 70;
$captcha['casse_sensitive'] = false;
/*
* Initialisation
*/
if( session_id()== ) @session_start();
$captcha['basepath'] =
str_replace($_SERVER['DOCUMENT_ROOT'],,str_repla
ce('\\','/',dirname(__FILE__)))."/";
/*
* Diverses fonctions utiles
*/
function captcha_image()
{
global $captcha;
echo '<img src="' , $captcha['basepath'] , 'image.php" id="tinycaptchaimg" />';
}
function captcha_field()
{
global $captcha;
if( !$captcha['casse_sensitive'] )
$style = 'style="text-transform:uppercase"';
echo <<< FIELD
<input type="text" name="tinycaptcha" maxlength="{$captcha['nb_char_max']}" size="{$captcha['nb_char_max']}" {$style} />
FIELD;
}
function captcha_refresh()
{
global $captcha;
$html = '<img src="' . $captcha['basepath'] . 'refresh.png" alt="Refresh" />';
echo <<< REFRESH
<span
onclick="document.getElementById('tinycaptchaimg')
.src='{$captcha['basepath']}image.php?'+Math.round
(Math.random(0)*1000);" style="cursor:pointer">{$html}</span>
REFRESH;
}
function captcha_verif($code=false)
{
global $captcha;
if( !$code )
$code = $_POST['tinycaptcha'];
if( !$captcha['casse_sensitive'] )
$code = strtoupper($code);
return md5($code)==$_SESSION['captcha_code'];
}
?>
