本文執行個體講述了CI架構表單驗證的方法。分享給大家供大家參考，具體如下：
1、form頭部資訊的自動輸出函數(view)
<?php $attributes = array('class' => 'email', 'id' => 'myform'); echo form_open('email/send', $attributes); //上面一行代碼輸出： //<form method="post" accept-charset="utf-8" action="http://example.com/index.php/email/send" id="myform" class="email"/> /* * form_open_multipart() * 函數用法同上，加上了檔案上傳的資訊 上傳方式預設為post */?>
2、設定驗證規則(controller)
<?php//注意驗證規則的變數名必須設定成 config$config = array( array( 'field' => 'username', 'label' => '使用者名稱', 'rules' => 'required' ), array( 'field' => 'password', 'label' => '密碼', 'rules' => 'required' ), array( 'field' => 'passconf', 'label' => '確認密碼', 'rules' => 'required|matches[password]' ), array( 'field' => 'tel', 'label' => '手機', 'rules' => 'required|integer|exact_length[11]'), array( 'field' => 'email', 'label' => '郵箱', 'rules' => 'required|valid_email' ) );//上面的會自動//單獨設定規則$this->form_validation->set_rules('username', 'Username', 'trim|required|min_length[5]|max_length[12]|xss_clean');$this->form_validation->set_rules('password', 'Password', 'trim|required|matches[passconf]|md5');$this->form_validation->set_rules('passconf', 'Password Confirmation', 'trim|required');$this->form_validation->set_rules('email', 'Email', 'trim|required|valid_email');?>
3、規則對應的錯誤提示(controller)
<?php$this->form_validation->set_message('required', '必須填寫');$this->form_validation->set_message('valid_email', '不是有效email');?>
4、運行檢查錯誤資訊(controller)
<?php $this->load->helper(array('form', 'url')); //載入CI表單驗證庫 $this->load->library('form_validation'); //---------------------------------------- # 驗證規則及錯誤資訊代碼放在這裡 //---------------------------------------- if ($this->form_validation->run() == FALSE){ //提交失敗 重新載入表單部分 $this->load->view('myform'); }else{ //提交成功 表單處理 //跳轉成功頁面 $this->load->view('formsuccess'); }}
5、錯誤資訊的輸出函數(view)
<?php //1.一股腦兒的全部輸出(放在表單標籤的上方即可) echo validation_errors(); //2.針對單個表單單獨輸出(放在單個標籤附近 參數為對應表單元素的網域名稱) echo form_error('password'); //3.針對單個表單輸出的時候 需要修改定界符 顯示錯誤資訊樣式（控制器裡設定） $this->form_validation->set_error_delimiters('<span class="error">', '</span>'); //設定成內嵌元素比較好?>
6、錯誤後 重新回填表單(view)
<?php //一般元素 回填(放在標籤的values屬性中輸出) echo set_value('email'); //特殊元素select/checkbox/radio 第三個參數為true時 預設被選中 //第二個參數 是對應的表單元素的實際值 echo set_select('myselect', 'three'); //放在option的空白屬性裡 echo set_checkbox('mycheck[]', '1'); //放在checkbox的空白屬性裡 echo set_radio('myradio', '2'); //放在radio的空白屬性裡?>
html代碼：
<html> <head> <title>My Form</title> </head><body> <?php echo validation_errors(); ?> <?php echo form_open('form'); ?> <h5>Username</h5> <input type="text" name="username" value="<?php echo set_value('username'); ?>" size="50" /> <?php echo form_error('username'); ?> <h5>Password</h5> <input type="text" name="password" value="<?php echo set_value('password'); ?>" size="50" /> <?php echo form_error('password'); ?> <h5>Password Confirm</h5> <input type="text" name="passconf" value="<?php echo set_value('passconf'); ?>" size="50" /> <?php echo form_error('passconf'); ?> <h5>Email Address</h5> <input type="text" name="email" value="<?php echo set_value('email'); ?>" size="50" /> <?php echo form_error('email'); ?> <p><input type="submit" value="Submit" /></p></form></body></html>
以上就是本文的全部內容，希望對大家的學習有所協助，更多相關內容請關注topic.alibabacloud.com！
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
