php - 语法错误，PHP 中出现意外的 T_CONSTANT_ENCAPSED_STRING

Question

mysql_connect("localhost","root","");
mysql_select_db("hitnrunf_db");

$result=mysql_query("select * from jos_users INTO OUTFILE 'users.csv' FIELDS ESCAPED BY '""' TERMINATED BY ',' ENCLOSED BY '"'
 LINES TERMINATED BY '\n' ");

header("Content-type:  text/plain");
header("Content-Disposition: attachment; filename=your_desired_name.xls");
header("Content-Transfer-Encoding: binary");
header("Pragma: no-cache");
header("Expires: 0");
print "$header\n$data";

在查询字符串中的上述代码中，即 mysql_quey 中的字符串

我们收到以下错误

Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in C:\wamp\www\samples\mysql_excel\exel_outfile.php on line 8

在查询字符串 '\n' 中，charter 未识别为字符串，这就是为什么出现上述错误

Answer 1

您需要将双引号转义为：\"而不是""

$result=mysql_query("select * from jos_users INTO OUTFILE 'users.csv' FIELDS ESCAPED BY '\"' TERMINATED BY ',' ENCLOSED BY '\"' LINES TERMINATED BY '\n' ");

未转义的"将过早终止字符串。

例子：

这是不正确的："A " is a double quote"
这是正确的："A \" is a double quote"