while loop problem

[godrifle]

Hi all,

The code below doesn't produce the output I intended. :glare: Can anyone shed some light as to why?

$dataFile = fopen("test.txt", 'r');
$tmpHandle = fopen("test.new.txt", 'w');

$insertPoint="2";
$insertString="Some New Data\r\n";

$lineCount=0;

while (!feof($dataFile)) {

$lineCount++;

if($lineCount == $insertPoint){
    fwrite($tmpHandle, $insertString);
    continue;
}

fwrite($tmpHandle, fgets($dataFile));
}

fclose($dataFile);
fclose($tmpHandle);

It produces this output:

Data Line 1
Some New Data
Data Line 2
Data Line 3

My intent was that it would produce:

Data Line 1
Some New Data
Data Line 3

I've also tried with an if/else statement in lieu of the continue

[rehfeld]

the problem is when your

if($lineCount == $insertPoint){

is satisfied, you do not call fgets() but just continue to the next loop. so the file pointer never get advanced to the next line.

something like this

if($lineCount == $insertPoint){
    fwrite($tmpHandle, $insertString);
    fgets($dataFile);
    continue;
} 

[godrifle]

OMG! Thank you!