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@NogDogMay 16.2015 — #@NogDogMay 16.2015 — #Any error messages? If not...
@NogDogMay 18.2015 — #Can you? Yes, but it becomes more complicated, and as the file grows, it will take longer to process. At that point, I'd seriously consider using a database to record this, as then you'd just need a bit of query logic to update the latest record if applicable, otherwise inserting a new record. @NogDogMay 19.2015 — #You can load the file into an array with the file() function:
Then you can loop through that file and look for matches, make updates to the array if found, or else add the new line to the end of the array (array_push()). Then write the modified array back to the file:
However, if more than one user/process could possibly call this at the same time, you might want to look into using flock() to avoid race conditions.
update string from text file to another text file ?
Hello @ll
this is my first Q in forum ?
Ok, I have a text file on my android device which I send to server every 2 min’s
text file contain’s only 1 ( single line ) filename gps.txt
that single line in text file look’s like this 45:16.2432432;19:2465467;12;4
in a server directory I have filename gps.txt ( in that file I store data )
curently I use this php on my server ( named upload_file.php )
[code=php]<?php
$file_path = “uploads/”;
$file_path = $file_path . basename( $_FILES[‘uploaded_file’][‘name’]);
if(move_uploaded_file($_FILES[‘uploaded_file’][‘tmp_name’], $file_path)) {
echo “success”;
} else{
echo “fail”;
}
?>
but it only overwrite existing file!!!
how to modifty my existing file so that when I send new gps.txt with single line to add that line in gps.txt which is already on server ( not to overwrite it )
B.R.
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@NogDogMay 16.2015 — #[code=php]
<?php
$result = 'fail';
$newText = trim(file_get_contents($_FILES['uploaded_file']['tmp_name']));
if($newText !== '') {
// [a]ppend mode:
$fh = fopen('uploads/'.basename($_FILES['uploaded_file']['name'], 'a');
if(fputs($fh, $newText.PHP_EOL)) {
$result = 'success';
}
}
echo $result;
[/code]0
@NogDogMay 16.2015 — #Any error messages? If not...[code=php]
<?php
ini_set('display_errors', true);
error_reporting(E_ALL);
// rest of code...
[/code]0
@NogDogMay 18.2015 — #0
@NogDogMay 19.2015 — #You can load the file into an array with the file() function:[code=php]
$logArray = file('path/to/file.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
[/code]Then you can loop through that file and look for matches, make updates to the array if found, or else add the new line to the end of the array (array_push()). Then write the modified array back to the file:
[code=php]
file_put_contents('path/to/file.txt', implode(PHP_EOL, $logArray);
[/code]However, if more than one user/process could possibly call this at the same time, you might want to look into using flock() to avoid race conditions.