Syntax error, unexpected T_CONSTANT_ENCAPSED_STRIN

问题:

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Closed 6 years ago.

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";

in the above code in query string i.e string in side mysql_quey

we are getting following error

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

in query string '\n' charter is not identifying as string thats why above error getting

回答1:

You need to escape the double quote as: \" instead of ""

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

An un-escaped " will prematurely terminate the string.

Example:

This is incorrect: "A " is a double quote"
This is correct: "A \" is a double quote"