在MYSQL查询后使用phpexcel从excel中删除字段

Question

我使用PHPExcel从MYSQL数据库导出数据，并将其导入excel文件。

我有一个像这样的数据库(这也是我使用PHPExcel生成excel文件时的样子)：

======================================================
|           Question                  |   Answer     |
=========+===========+===============================|
| Do you listen to music?             |    YES       |            
|----------------------------------------------------|
| Who is your favorite music artists? | Justin Beiber| 
|----------------------------------------------------|
| <p> Select an Answer<p>             |              | 
|----------------------------------------------------|
|Are you a Male or female             |      M       | 
|----------------------------------------------------|

我希望我的excel文件看起来像这样：

======================================================
|           Question                  |   Answer     |
=========+===========+===============================|
| Do you listen to music?             |    YES       |            
|----------------------------------------------------|
| Who is your favorite music artists? | Justin Beiber| 
|----------------------------------------------------|
|Are you a Male or female             |      M       | 
|----------------------------------------------------|

我正在使用以下代码：

$objPHPExcel = new PHPExcel();

$col = 1; 
while($row_data = mysql_fetch_assoc($result)) {
    $row = 1;
    if ($col == 1) {
        $row_headings = array_keys($row_data);
        foreach($row_headings as $value) {
            $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $value);
            $row++;
        }
        $row = 1;
        $col++;
    }
    foreach($row_data as $value) {
      if (!strstr('<p>', $value)){
        $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $value);

    $row++;
         }
    }
    $col++;
}

Answer 1

一种选择是在执行SQL查询时排除<p> Select an Answer<p>，您将选择列和行，然后从您的选择中选择DELETE WHERE question = "<p> Select an Answer<p> "。

如果列Anwser值为null或""，而Question值为<p> Select an Answer<p>，则也可以这样说：

if($value !== null)
{
  // Output...
} 

例如：

$objPHPExcel = new PHPExcel();

$col = 1; 
while($row_data = mysql_fetch_assoc($result)) {
    $row = 1;
    if ($col == 1) {
        $row_headings = array_keys($row_data);
        foreach($row_headings as $value) {
            $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $value);
            $row++;
        }
        $row = 1;
        $col++;
    }
    foreach($row_data as $value) {
        if($value !== null || $value !== '')
        {
         $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $value);
         $row++;
        }
    }
    $col++;
}

或者，您只需删除包含<p> Select an Answer<p>的行，除非需要它们。