从sql语句创建多个CSV文件

时间:2014-11-11 13:56:44

标签: php mysql csv

我正在运行如下所示的sql来选择我的数据库中具有已定义兴趣代码的所有行。现在,我想将所有选定的结果导出为CSV,但这大约会发生30次,因为有大约30个兴趣代码。有没有办法让我循环遍历1个sql,每次使用新SQL查询的结果创建一个新的CSV?

两个sql查询的示例。

select * from subscribers where list=27 and custom_fields LIKE '%\%CV\%%';
select * from subscribers where list=27 and custom_fields LIKE '%\%JJC\%%';

依此类推...每次创建一个全新的CSV文件。 30个文件。

我发现了以下内容(尚未经过测试),但我认为这将是php,但需要继续使用1 sql。

$select = "select * from subscribers where list=27 and custom_fields LIKE '%\%CV\%%';";

$export = mysql_query ( $select ) or die ( "Sql error : " . mysql_error( ) );

$fields = mysql_num_fields ( $export );

for ( $i = 0; $i < $fields; $i++ )
{
    $header .= mysql_field_name( $export , $i ) . "\t";
}

while( $row = mysql_fetch_row( $export ) )
{
    $line = '';
    foreach( $row as $value )
    {                                            
        if ( ( !isset( $value ) ) || ( $value == "" ) )
        {
            $value = "\t";
        }
        else
        {
            $value = str_replace( '"' , '""' , $value );
            $value = '"' . $value . '"' . "\t";
        }
        $line .= $value;
    }
    $data .= trim( $line ) . "\n";
}
$data = str_replace( "\r" , "" , $data );

if ( $data == "" )
{
    $data = "\n(0) Records Found!\n";                        
}

header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=your_desired_name.xls");
header("Pragma: no-cache");
header("Expires: 0");
print "$header\n$data";

1 个答案:

答案 0 :(得分:2)

我写了一个创建单个导出的函数,然后在不同代码的循环中调用它。像这样:

function export($code)
{
    $query = "select * from subscribers where list=27 and custom_fields LIKE '%\%" . $code . "\%%'";
    // put the results for this query in $data as in your example
    file_put_contents('/path/to/file/for/code_' . $code, $data);
}

$codes = array('CV', 'JCC', '...');
foreach ($codes as $code) {
    export($code);
}