尝试将使用group_concat从MySQL检索到的逗号分隔值打印到php的csv文件中

如何解决尝试将使用group_concat从MySQL检索到的逗号分隔值打印到php的csv文件中

我正在尝试在预期如下的csv文件上打印输出：

但它打印出意外的消息，如下所示：

或者，当我不使用爆炸功能将逗号分隔成数组时（如在下面的foreach中用于“ tezest”列），它只是在导出的csv文件的所有字段中按如下所示打印逗号分隔值：>

exe1，example1 @ gmail.com，example1、1234567890、11
exe2，example2 @ gmail.com，example2、2222567890、12

当我使用以下代码显示的print_f值正确时：

代码->

    $this->data['report_results'] = $this->Task_model->getReports($data);

    $this->data['reports_name'] = $this->Task_model->getFormName('form198');
    
    echo "<pre>";
    print_r($this->data['report_results']);die('qq');

输出->

Array
(
    [0] => Array
        (
            [id] => 5
            [name] => exe1
            [form_id] => form198
            [created_at] => 2020-09-13 13:14:29
            [fillup_id] => 64654b4040f57c827c75edc0e8
            [tezest] => exe1,[e-mail],example1,1234567890,11
            [formName] => Admission Form
        )

    [1] => Array
        (
            [id] => 5
            [name] => 12
            [form_id] => form198
            [created_at] => 2020-09-13 13:15:20
            [fillup_id] => b9c2259b74eb5c97aceadee956
            [tezest] => exe2,[e-mail],example2,2222567890,12
            [formName] => Admission Form
        )

)
qq

但是进入foreach循环后它只是打印错误。使用foreach循环可打印到csv文件的代码如下：

<?php
$this->data['report_results'] = $this->Task_model->getReports($data);

$this->data['reports_name'] = $this->Task_model->getFormName('form198');
            
//echo "<pre>";
//print_r($this->data['report_results']);die('qq');
                          
                         
            
if(!empty($this->data['report_results'])){
                
    $delimiter = ",";
    $filename = "report_" . date('Y-m-d') . ".csv";
    //create a file pointer
    $f = fopen('php://memory','w');
    //set column headers


    $fields = array("Sl. No","Form name","Token_id","Date",);
    if(!empty($this->data['reports_name'])){
        foreach($this->data['reports_name'] as $question){
            $this->data['reports_name'][] = array(
                      'name' =>  $question['name']
                        
                      );
            $fields[] = $question['name'];

        }        
    }
    fputcsv($f,$fields,$delimiter);


    $i=0;
                
    foreach($this->data['report_results'] as $result){      
                    
    $lineData = array(++$i,$result['roleName'],$result['form_id'],date('d/m/Y',strtotime($result['created_at'])));  

    
    foreach($this->data['report_results'] as $question){

        $this->data['report_results'][] = array(
                                 'tezest' =>  $question['tezest']
                        
                               );
        $arr=explode(",",$question['tezest']);


        $lineData[] = $arr;
    }
                               
    fputcsv($f,$lineData,$delimiter); 
}               
                
//move back to beginning of file
fseek($f,0);
    
//set headers to download file rather than displayed
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="' . $filename . '";');
    
//output all remaining data on a file pointer
fpassthru($f);
                                
exit(); 
                
  }
?>

请帮助我了解在实现正确输出方面我错了。

解决方法

使用explode将逗号分隔的字符串转换为数组：

$array=explode(",",$question['commaseperated-string']);