Question

我的问题是，我键入第一行文本框中的兄弟细节，我选中复选框没有错误显示。如果我没有选中该复选框，则会显示以下错误。你能说点什么吗？我是CodeIgniter的新手。

我收到错误消息:(我如何解决错误）

A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 1
Filename: controllers/registration.php
Line Number: 288

在我的代码下面：

foreach($querystud_frm->result() as $row)
        {
            echo "<tr><td>".$i.")</td>";
            $data=array('name'=>'s_sibling_name[]','class'=>'textbox','value'=>$row->s_sibling_name,'style'=>'text-transform:uppercase;');
            echo "<td >".form_input($data)."</td>";
            $data=array('name'=>'s_sibling_nric[]','class'=>'textbox','value'=>$row->s_sibling_nric,'style'=>'text-transform:uppercase;');
            echo "<td >".form_input($data)."</td>";
            $sib_dob=date('d-m-Y',strtotime(trim($row->s_sibling_dob)));
            $data=array('name'=>'s_sibling_dob[]','class'=>'textbox','value'=>$sib_dob,'style'=>'text-transform:uppercase;');
            echo "<td >".form_input($data)."</td>";
            $data=array('name'=>'s_sibling_relation[]','class'=>'textbox','value'=>$row->s_sibling_relation,'style'=>'text-transform:uppercase;');
            echo "<td >".form_input($data)."</td>";
            $data=array('name'=>'s_sibling_occupation[]','class'=>'textbox','value'=>$row->s_sibling_occupation,'style'=>'text-transform:uppercase;');
            echo "<td >".form_input($data)."</td>";
            $data=array('name'=>'s_sibling_income[]','class'=>'textbox','value'=>$row->s_sibling_income,'style'=>'text-transform:uppercase;');
            echo "<td >".form_input($data)."</td>";
                $sib_yes = $row->s_sibling_yes;
            echo $sib_yes;
            if($sib_yes == 'YES')
            {
            $data= array('name' => 's_sibling_yes[]', 'id' => 's_sibling_yes', 'value' => 'YES', 'checked' => TRUE);
            echo "<td >".form_checkbox($data)."</td>";
            }
            else
            {
            $data= array('name' => 's_sibling_yes[]', 'id' => 's_sibling_yes', 'value' => 'NO', 'checked' => FALSE);
            echo "<td >".form_checkbox($data)."</td>";
            }

    echo "</tr>"; 
                $i++;
        }

        if($i<10)
        {
            $var=array("s_sibling_name","s_sibling_nric","s_sibling_dob","s_sibling_relation","s_sibling_occupation","s_sibling_income");
            for($j=$i;$j<=10;$j++)
            {
                echo "<tr><td>".$j.")</td>";
                foreach($var as $value)
                {
                    $value=$value.'[]';
                $data_val=array('name'=>$value,'class'=>'textbox','value'=>'','style'=>'text-transform:uppercase;');
                echo "<td>".form_input($data_val)."</td>";
                }
            if($sib_yes == 'YES')
            {
            $data= array('name' => 's_sibling_yes[]', 'id' => 's_sibling_yes', 'value' => 'YES', 'checked' => TRUE);
            echo "<td >".form_checkbox($data)."</td>";
            }
            else
            {
            $data= array('name' => 's_sibling_yes[]', 'id' => 's_sibling_yes', 'value' => 'NO', 'checked' => FALSE);
            echo "<td >".form_checkbox($data)."</td>";
            }

    echo "</tr>"; 
            }
            unset($var);
        }

        $querystud_frm->free_result();
    }
    else 
    {
        $var=array("s_sibling_name","s_sibling_nric","s_sibling_dob","s_sibling_relation","s_sibling_occupation","s_sibling_income");
        $var_sib=array("s_sibling_yes");            
        for($i=1;$i<=10;$i++)
        {
            echo "<tr><td>".$i.")</td>";
            foreach($var as $value)
            {
                $name=$value.'[]';  
                $data=array('name'=>$name,'class'=>'textbox','value'=>'','style'=>'text-transform:uppercase;');
                echo "<td >".form_input($data)."</td>";
            }
                $data= array('name' => 's_sibling_yes[]', 'id' => 's_sibling_yes', 'value' => 'YES', 'checked' => FALSE);
                echo "<td >".form_checkbox($data)."</td>";
    echo "</tr>"; 

        }
        unset($var,$i,$data,$var_sib);
    }

控制器/和registration.php

            if($this->input->post('siblingsfrm'))
        {
            $this->data['nric']=$this->input->post('s_nric');
            //echo $this->input->post('name');
            $name=$this->input->post('s_sibling_name');
            $nric=$this->input->post('s_sibling_nric');
            $dob=$this->input->post('s_sibling_dob');
            //$dob=strtotime($dob);
            //$dob=date('Y-m-d',strtotime($dob));
            $relation=$this->input->post('s_sibling_relation');
            $occupation=$this->input->post('s_sibling_occupation');
            $income=$this->input->post('s_sibling_income');
            $sib_yes=$this->input->post('s_sibling_yes');
            $sib_id=$this->input->post('s_sibling_id');
            //print_r($sib_id);
            //print_r($name);
            //exit();
            //$this->load->helper('date');
            for($i=0;$i<count($name);$i++)
            {
                if($name[$i]!='')
                {
                    $income[$i]=trim($income[$i]);
                    if($income[$i]=='')
                    $income[$i]=0;
                    if($sib_yes[$i]!= 'YES')
                    $sib_yes[$i]='NO';
                    $date=date('Y-m-d',strtotime(trim($dob[$i])));
                $insert_values=array('s_nric'=>$this->data['nric'],'s_sibling_name'=>strtoupper(trim($name[$i])),
                                    's_sibling_nric'=>strtoupper(trim($nric[$i])),'s_sibling_dob'=>$date,
                                    's_sibling_relation'=>strtoupper(trim($relation[$i])),
                                    's_sibling_occupation'=>strtoupper(trim($occupation[$i])),
                                    's_sibling_income'=>strtoupper(trim($income[$i])),
                                    's_sibling_yes'=>trim($sib_yes[$i]));
                if(is_array($sib_id) && isset($sib_id[$i]) )
                {
                    $where=array('s_sibling_id'=>$sib_id[$i]);
                    $this->db->update('si_student_siblings',$insert_values,$where);
                }
                else
                {
                    //print_r($insert_values);
                    $this->db->insert('si_student_siblings',$insert_values);
                }
                }
            }
            $this->data['level']=7;
        }

Answer 1

问题是如果没有选中复选框，它将不会向服务器发送任何数据。所以，这行代码......

$name=$this->input->post('s_sibling_name');

...实际上会将$name变量设置为FALSE（请参阅{{3>}中的 $ this-＆gt; input-＆gt; post（）文档）

因此，第一次通过循环，您的代码正在$name[0]查找数组项，而实际上$name甚至不是数组，它是FALSE。

你可以用if / else语句包围你的for循环来解决这个问题（不是最优雅的解决方案，但它会起作用）：

if (is_array($name) && count($name) > 0)
{
  for($i=0;$i<count($name);$i++)
  {
    if($name[$i]!='')
      //etcetera...
  }
}

如何使用codeigniter插入和检索复选框值？

1 个答案: