将 MySQL 查询转换为 CSV 的 PHP 代码 [英] PHP code to convert a MySQL query to CSV
本文介绍了将 MySQL 查询转换为 CSV 的 PHP 代码的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
请问在 PHP 中将 MySQL 查询转换为 CSV 的最有效方法是什么?
What is the most efficient way to convert a MySQL query to CSV in PHP please?
最好避免使用临时文件,因为这会降低可移植性(需要目录路径和设置文件系统权限).
It would be best to avoid temp files as this reduces portability (dir paths and setting file-system permissions required).
CSV 还应包含一个字段名称的顶行.
The CSV should also include one top line of field names.
推荐答案
SELECT * INTO OUTFILE "c:/mydata.csv"
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY "\n"
FROM my_table;
(相关文档在这里:http://dev.mysql.com/doc/refman/5.0/en/select.html)
或:
$select = "SELECT * FROM table_name";
$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";
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