我有一個captch php文件，我想創建一個可以引導我的recaptcha文件

我已經創建了一個帶有驗證碼的註冊表單，但是我需要驗證碼，它可以工作在客戶端但不是服務器端，所以我想開發一個recaptcha文件在客戶端工作，任何人都可以幫助我。在此先感謝我有一個captch php文件，我想創建一個可以引導我的recaptcha文件

MY圖形驗證碼是

session_start(); 
//Settings: You can customize the captcha here 
$image_width = 120; 
$image_height = 40; 
$characters_on_image = 6; 
$font = './monofont.ttf'; 

//The characters that can be used in the CAPTCHA code. 
//avoid confusing characters (l 1 and i for example) 
$possible_letters = '23456789bcdfghjkmnpqrstvwxyz'; 
$random_dots = 0; 
$random_lines = 20; 
$captcha_text_color="0x142864"; 
$captcha_noice_color = "0x142864"; 

$code = ''; 

$i = 0; 
while ($i < $characters_on_image) { 
    $code .= substr($possible_letters, mt_rand(0, strlen($possible_letters)-1), 1); 
    $i++; 
} 

$font_size = $image_height * 0.75; 
$image = @imagecreate($image_width, $image_height); 

/* setting the background, text and noise colours here */ 
$background_color = imagecolorallocate($image, 255, 255, 255); 

$arr_text_color = hexrgb($captcha_text_color); 
$text_color = imagecolorallocate($image, $arr_text_color['red'], 
     $arr_text_color['green'], $arr_text_color['blue']); 

$arr_noice_color = hexrgb($captcha_noice_color); 
$image_noise_color = imagecolorallocate($image, $arr_noice_color['red'], 
     $arr_noice_color['green'], $arr_noice_color['blue']); 

/* generating the dots randomly in background */ 
for($i=0; $i<$random_dots; $i++) { 
    imagefilledellipse($image, mt_rand(0,$image_width), 
    mt_rand(0,$image_height), 2, 3, $image_noise_color); 
} 

/* generating lines randomly in background of image */ 
for($i=0; $i<$random_lines; $i++) { 
    imageline($image, mt_rand(0,$image_width), mt_rand(0,$image_height), 
    mt_rand(0,$image_width), mt_rand(0,$image_height), $image_noise_color); 
} 

/* create a text box and add 6 letters code in it */ 
$textbox = imagettfbbox($font_size, 0, $font, $code); 
$x = ($image_width - $textbox[4])/2; 
$y = ($image_height - $textbox[5])/2; 
imagettftext($image, $font_size, 0, $x, $y, $text_color, $font , $code);  

/* Show captcha image in the page html page */ 
header('Content-Type: image/jpeg');// defining the image type to be shown in browser widow 
imagejpeg($image);//showing the image 
imagedestroy($image);//destroying the image instance 
$_SESSION['6_letters_code'] = $code; 

function hexrgb ($hexstr) 
{ 
    $int = hexdec($hexstr); 
    return array("red" => 0xFF & ($int >> 0x10), 
       "green" => 0xFF & ($int >> 0x8), 
       "blue" => 0xFF & $int); 
}

來源

2012-08-01 yasin

您是否試圖實施reCaptcha並更換您的當前系統？看看他們的文檔：https：//developers.google.com/recaptcha/docs/display#AJAX – 2012-08-01 06:26:24

你想100％的客戶端驗證碼？這不否認使用驗證碼的點？如果所有的驗證都是在客戶端完成的，服務器請求會立即變成可僞造的... – DaveRandom 2012-08-01 06:32:52

我的註冊表單中有很多文本字段，在提交表單輸入驗證碼之前，輸入錯誤的captcha整個頁面數據變成空白註冊頁面，我需要客戶端驗證 – yasin 2012-08-01 06:39:51