Geração de códigos captcha em formulários HTML com PHP e PostgreSQL
Publicado por Cláudio Souza Jr. (última atualização em 06/01/2015)
[ Hits: 4.529 ]
Requerimentos:
- PostgreSQL 9.2
- Apache 2
- PHP 5 (5.4.35)
- NTP (facultativo)
- Extensões PHP: php5-gd e php5-pgsql
- A opção global "date.timezone" do "php.ini" foi configurada
- O navegador tem que suportar JavaScript.
Segue anexada a classe e os códigos dos demais arquivos.
Obs.: o path aqui no meu servidor é: "http://localhost/testes/php/classes_php/captcha_simples". Ao mudar isso, atente para o modo "3" do método "CriaCaptcha", em "classe.php".
Críticas construtivas, sugestões e análises são bem-vindas.
::: Código do arquivo index.php ::: <?php include 'classe.php'; $Captcha = new Captcha(); $Captcha->Definicao(); ?> <!DOCTYPE html> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> <title>Teste Captcha Simples</title> <link rel='icon' type='image/png' href=''> <link rel='stylesheet' href='style.css' type='text/css'> </head> <body onload="<?=$Captcha->body_onload?>" onunload="<?=$Captcha->body_onunload?>"> <div class="corpo"> <?php if($Captcha->passo == '1') { $Captcha->FormCaptcha($Captcha->passo, $Captcha->captcha_id, $Captcha->captcha_cod); } elseif($Captcha->passo == '2') { $Captcha->CriaCaptcha('1', $Captcha->captcha_id, $Captcha->captcha_cod); }?> </div> <script type="text/javascript" src="javascript.js"></script> </body> </html> -------------------------------------------------------------------------------------- ::: Código do arquivo captcha.php ::: <?php header("Content-type: image/png"); include_once 'classe.php'; $captcha = new Captcha(); $captcha->CriaImgCaptcha($_SESSION['captcha_cod']); ?> -------------------------------------------------------------------------------------- ::: Código do arquivo style.css::: .corpo { margin-left: 120px; margin-right: 120px; margin-top: 120px; padding-left: 120px; padding-right: 120px; } .input-text { border: solid 1px; border-color: #2f96b4; padding: 2px; text-transform: uppercase; } -------------------------------------------------------------------------------------- ::: Código do arquivo javascript.js::: /** * Script de validacao e funcoes genericas */ function RefreshThisPage(){ window.location = window.location; } function SetFormData(){ sessionStorage["captcha_cod"] = document.FormCaptcha.captcha_cod.value; sessionStorage["form_texto"] = document.FormCaptcha.form_texto.value; } function LoadFormData(){ var captcha_cod = sessionStorage.captcha_cod; var form_texto = sessionStorage.form_texto; if (captcha_cod != undefined ||form_texto != undefined){ document.FormCaptcha.captcha_cod.value = captcha_cod; document.FormCaptcha.form_texto.value = form_texto; } } function UnsetFormData(){ sessionStorage.removeItem('captcha_cod'); sessionStorage.removeItem('form_texto'); } function ValidaForm(){ if(document.FormCaptcha.form_texto.value === ""){ alert('Informe o texto!'); document.getElementById('form_texto').focus(); return false; } if(document.FormCaptcha.captcha_cod.value === ""){ alert('Informe o codigo captcha!'); document.getElementById('captcha_cod').focus(); return false; } if(document.FormCaptcha.captcha_cod.value.length < '6'){ alert('O codigo captcha possui 6 digitos!'); document.getElementById('captcha_cod').focus(); return false; } return true; } -------------------------------------------------------------------------------------- ::: Tabela do banco de dados ::: DROP TABLE IF EXISTS tb_captcha CASCADE; CREATE TABLE tb_captcha ( captcha_id integer NOT NULL, -- Id do registro dos dados do sistema captcha_cod character varying, -- Código captcha captcha_data date, -- Data de alteração CONSTRAINT captcha_id PRIMARY KEY (captcha_id) ) WITH (OIDS=FALSE); COMMENT ON TABLE tb_captcha IS 'Dados do sistema, informações gerais'; COMMENT ON COLUMN tb_captcha.captcha_id IS 'Id do registro dos dados do sistema'; COMMENT ON COLUMN tb_captcha.captcha_cod IS 'Código captcha'; COMMENT ON COLUMN tb_captcha.captcha_data IS 'Data de alteração'; INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (1, '0880A2', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (2, 'A7D3E4', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (3, '765C4B', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (4, '2B7C80', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (5, '323FD0', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (6, '967F69', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (7, 'A79653', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (8, 'FE42A3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (9, 'D2A67C', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (10, 'C27EC0', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (11, '304C6B', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (12, '823F10', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (13, 'DA599E', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (14, '1199D9', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (15, 'DDE76B', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (16, '4D7BA5', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (17, '749E4E', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (18, 'DBB6E9', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (19, '69380A', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (20, 'D5A082', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (21, '4403DC', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (22, '73570A', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (23, '61E5B0', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (24, '6FCE3C', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (25, '8AC22D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (26, 'C4DBA5', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (27, '47DBD6', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (28, 'C50453', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (29, '484B1F', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (30, 'DEB59D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (31, 'DC3EA6', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (32, 'BA46E1', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (33, 'A335E1', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (34, 'F39EF0', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (35, '3923B9', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (36, '2D794C', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (37, '991AA2', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (38, 'F4F648', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (39, 'AE5E8F', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (40, '811C71', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (41, '002C60', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (42, '7D7CC3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (43, '3A480A', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (44, '979E0F', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (45, '5D7379', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (46, '2D7E9D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (47, '075FB7', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (48, 'C3F1D7', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (49, 'CC9C8A', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (50, '24086C', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (51, 'C8CDC8', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (52, '072CCE', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (53, '285DE3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (54, '0B9586', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (55, 'AC47E0', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (56, '59B8BD', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (57, '4CE688', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (58, 'CBABA3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (59, '363435', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (60, '55717A', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (61, '60199D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (62, 'BAF01B', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (63, 'AFE56E', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (64, '11E096', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (65, '717695', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (66, 'F01062', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (67, '18DC86', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (68, '63420D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (69, '94F9F5', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (70, '04893A', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (71, '02F6C3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (72, '2B906C', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (73, 'E553B6', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (74, '8ECF62', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (75, 'C77C40', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (76, 'B2C017', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (77, '10C9E4', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (78, '0FCE1B', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (79, 'E7A71E', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (80, '18FD78', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (81, '77C4F3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (82, '3CEA7C', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (83, '9D5611', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (84, 'BD7D5F', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (85, 'D2A9E3', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (86, 'FDF115', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (87, '12C1FB', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (88, '0BBFCF', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (89, 'F45DBE', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (90, '5A2EE5', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (91, '62CA57', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (92, '1B6F5B', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (93, '8B2C7D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (94, '1CD166', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (95, '130DEF', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (96, '91ED08', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (97, 'C3807D', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (98, 'E3599F', '2014-12-31'); INSERT INTO tb_captcha (captcha_id, captcha_cod, captcha_data) VALUES (99, 'A9BFBB', '2014-12-31');
Whois Buscando dominios nacionais e internacionais
Paginação com qualidade em PHP
Pegando tweets de forma simples
Nenhum comentário foi encontrado.
Enviar mensagem ao usuário trabalhando com as opções do php.ini
Meu Fork do Plugin de Integração do CVS para o KDevelop
Compartilhando a tela do Computador no Celular via Deskreen
Como Configurar um Túnel SSH Reverso para Acessar Sua Máquina Local a Partir de uma Máquina Remota
Configuração para desligamento automatizado de Computadores em um Ambiente Comercial
Compartilhamento de Rede com samba em modo Público/Anônimo de forma simples, rápido e fácil
Cups: Mapear/listar todas as impressoras de outro Servidor CUPS de forma rápida e fácil
Criando uma VPC na AWS via CLI
Arch Linux - Guia para Iniciantes (2)
Problemas ao instalar o PHP (11)
Tem como instalar o gerenciador AMD Adrenalin no Ubuntu 24.04? (15)
Tenho dois Link's ( IP VÁLIDOS ), estou tentando fazer o failover... (0)