PHP Add string to line 2

Question

I want to add a string (the value of a DOM element - $entry = stripslashes($_GET["nameofmytextarea"]);) to the second line of myfile.csv (so as not to delete the header).

I don't care about CSV stuff, everything is already formatted. Just treat it as a text string being added to a text file.

I don't want anything complicated, just skip the first line and "append" above the second line: under the header but above all the other CSV lines.

How hard can that be?

It's nearly 2012, and you're still running with magic_quotes_gpc? — cmbuckley
– cmbuckley, Commented Dec 17, 2011 at 17:19

TimWolla · Accepted Answer · 2011-12-17 17:15:13Z

3

$contents = explode("\n", file_get_contents('myfile.csv'), 2);
file_put_contents('myfile.csv', $contents[0]."\n".$entry."\n".$contents[1]);

This should work if the lines are separated by unix-lineendings.
If the file first looks like this:

header
content
content2

and the code is run with $entry = 'test'; it will look like this afterwards:

header
test
content
content2

answered Dec 17, 2011 at 17:15

TimWolla

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3 Comments

user963395 Over a year ago

Yep, this works, I didn't know you could do that. Thanks for helping a n00b out man!

TimWolla Over a year ago

No Problem :) That's why we are here.

DaveRandom Over a year ago

Just be sure to check that $contents[1] is set, or you will end up with a blank line at the end of the file, and an E_NOTICE - that's one reason why I prefer the array_splice() approach...

DaveRandom · Accepted Answer · 2011-12-17 17:23:55Z

0

A combination of file() and array_splice() is what you need here:

function prepend_to_csv ($file, $line) {
  if (!$data = file($file)) {
    return FALSE;
  }
  array_splice($data, 1, 0, $line.PHP_EOL);
  return (bool) file_put_contents($file, $data);
}

if (prepend_to_csv('myfile.csv', "this,is,some,data")) {
  echo 'Success';
} else {
  echo 'Fail';
}

Because of the way this method works, you need to ensure that you manually add the EOL to the new line yourself.

edited Dec 17, 2011 at 17:23

answered Dec 17, 2011 at 17:15

DaveRandom

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