PHP。 将下载的csv传输到mysql数据库-如何在PHP内存中存储下载的csv文件

Question

I would like to store data downloaded from a website into my mysql database.

I use my function "CallAPI("GET", $url, $data = false)" to access the database using a url such as " http://www.xflow1.com/xGlobalHist.csv/ "...

So my call $results = CallAPI($method, $url, $data = false); returns a comma delimted array that is saved in the variable "$results". I can echo $results in a web page and it show me the data, all comma delimited. All good `til here.

To upload the csv to my mysql database I want to use the "LOAD DATA INFILE" function as so:

$upload = <<<eof
LOAD DATA INFILE $results
INTO TABLE X_Adjusted_All
FIELDS TERMINATED BY '|' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(Cusip, Date, Price)
 eof;  

The snag arises as "LOAD DATA INFILE $results" does not work as LOAD DATA INFILE only wants a filename, so I would like to store $results as a csv file in the memory to avoid creating and deleting files all the time. I thought this may work:

$fp = fopen('php://memory', 'w');
fputcsv($fp, $results);

Alas no. Does anyone have any idea how to take the downloaded csv file and save it to the phps memory as a csv file for use in the LOAD DATA INFILE function?

Answer 1

MySQL cannot read directly from PHP's memory. You need to create an external file using tempnam() . That file can then be read by MySQL. You could also create a temporary file and find out the filename as mentioned in this question .

The example of tempnam() shows how to write to that file:

<?php
$tmpfname = tempnam("/tmp", "FOO");

$handle = fopen($tmpfname, "w");
fwrite($handle, $results);
fclose($handle);

// do something

unlink($tmpfname);

This will store the contents of $results to a file called $tmpfname which you can store in mysql using LOAD DATA INFILE $tmpfname .

As mentioned in the comments, you could create a ram drive to store that file, if performance is an issue.