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replace line in a text file php

Posted on 2008-10-17
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Last Modified: 2013-12-13
I'm using fgetcsv to import data into mysql but the csv is corrupt and I had to find a way to fix it.

The attached code is what I'm using to fix the data but when I correct the line,    $new_line.  I need to replace the old line in the text file.  alternatively I could create a new file and write out each line as it is processed.  either way would work for me.

How do I write out the new text file?
<?

$handle = fopen("Details.txt", "r");

if ($handle) {

    while (!feof($handle)) {

      

	    $haystack = fgets($handle, 4096);

				$needle=",";

				$i = 0;

				

				//Find the position of needle

					$position = 0;

					while ($i <= 13){

					$position=strpos($haystack,$needle, $position+1);

					//echo $position . "<br>";

					$i = $i + 1;

					}

				// trim out the string before the first occurance of the needle.

				$temp_string=substr($haystack,0,$position+1);

				echo "start = " . $temp_string . '<br>';

				//find 14th comma

			  $endposition=strpos($haystack,$needle, $position+1);

			  //echo $endposition;

			  //get description1

		      $description1=substr($haystack,$position+2,$endposition - ($position + 3));

              $description1 = str_replace('"', '""', $description1);

              echo "description1=" . $description1 . "<br>";

	  

	

	   $des2end=strpos($haystack,$needle,$endposition + 1);

	   //echo $des2end;

	   $description2=substr($haystack,$endposition + 2,$des2end - ($endposition+3));

	   $description2 = str_replace('"', '""', $description2);

	   echo "description2=" . $description2 . "<br>";

	   

	   $rest =substr($haystack,$des2end);

	   echo "end = " . $rest . '<br><br>';

///this is the corrected line

	   $new_line = $temp_string . '"' . $description1 . '","' . $description2 . '"' . $rest;

	   echo $new_line . "<br><br><br>"; 

    }

    fclose($handle);

}

?>

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Question by:jimfrith
3 Comments
 
LVL 27

Expert Comment

by:ddrudik
ID: 22744997
>I'm using fgetcsv to import data into mysql but the csv is corrupt and I had to find a way to fix it.
What's corrupt in the line exactly?  maybe you post a sample of a non-corrupt line and a corrupt line for example.
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LVL 8

Accepted Solution

by:
aldanch earned 500 total points
ID: 22745032
Could you just concact the $new_line string and at the end write it out?

Once that is done you can do this:

file_put_contents("/path/to/file", $new_line);
$new_line .= $temp_string . '"' . $description1 . '","' . $description2 . '"' . $rest ."\n";
 

-instead of-
 

$new_line = $temp_string . '"' . $description1 . '","' . $description2 . '"' . $rest;

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Author Closing Comment

by:jimfrith
ID: 31507287
Thanks that did the trick.
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