Transitioning to PDO/MySQL.  Need help with importing file from URL

Posted on 2014-12-18
Last Modified: 2014-12-19
How do I make this file compatible with PDO.  I am getting the following error...

Fatal error: Cannot access empty property (on this line - $conn->$filename="";)

$conn = new PDO("mysql:host=$host;dbname=$db;charset=$charset", $user, $pass);



//rebs,rebe,spec,os&time= . $time . ";
//open the file
$handle = fopen($filename, "r");
//this is what causes it to skip

//begin looping through the lines
while (($data = fgetcsv($handle, ",")) !== FALSE)

// loop all column values and escape special characters
 foreach ($data as $key => $value){
  $data[$key] = mysql_real_escape_string($value);

echo ".$data[0].";


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Question by:lawrence_dev
LVL 14

Accepted Solution

quizwedge earned 167 total points
ID: 40507634
I might be missing something, but why are you doing $conn->$filename= instead of just $filename=? Doesn't look like you're trying to use $conn->$filename anywhere else.

Also, for fopen, do you have allow_url_fopen set to true?

Author Comment

ID: 40507713
quizwedge, Thanks!  I attempted to manipulate the code several different ways to make it work.  I viewed the page your posted above and cannot make heads or tails of it.    If someone could show me how to do it, that would be great.
LVL 83

Assisted Solution

by:Dave Baldwin
Dave Baldwin earned 167 total points
ID: 40507977
@quizwedge is right, it should be just $filename without $conn-> in front of it.
LVL 14

Expert Comment

ID: 40508753
Try running

Open in new window

That should print to the screen a bunch of information, part of which should be allow_url_fopen. In order to use fopen with a URL, that should be on. Assuming it's on, you should be able to do something similar to

$conn = new PDO("mysql:host=$host;dbname=$db;charset=$charset", $user, $pass);


//open the file
$handle = fopen($filename, "r");

Open in new window

Hope that helps.
LVL 109

Assisted Solution

by:Ray Paseur
Ray Paseur earned 166 total points
ID: 40508867
This line of code instantiates a new PDO object and assigns a pointer in $conn that points to the new object.

$conn = new PDO("mysql:host=$host;dbname=$db;charset=$charset", $user, $pass);

To understand what a PDO object is and does, you might want to read the manual about PDO.  There you will find the methods and properties you can expect to find in a PDO object.

To read a file from an external URL, you can often use file_get_contents().  To read the file as an array, separated on the line-endings you can use file().  To read the file incrementally as a set of numerically indexed arrays suitable for importing into a "quick-hack" database you can use fopen() and fgetcsv().

This is probably something we have all done before - read a flat file and put some of the data into a database table.  If you want to post the CREATE TABLE statement and a small sample of your test data set, we can easily show you a tested and working example, complete with explanatory comments.

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