PHP Add or Edit line in text File - php

Question

I'm trying to search a text file, if a line contains a specific key ID I want to update the entire line, if not add a new line.
So based on this text file :
admin,1234,ID1345,NW
staff,1325,ID1001,NE
staff,2157,ID2003,SW
staff,8519,ID3001,NS
I want to search for ID1345 and then update that line only, the other lines stay exactly as they are. If no lines contain ID1345 then add a new line to the text file.
So far I've got:
$search = 'ID1345';
$result = 'admin,6698,ID1345,OP';
$reading = fopen('myfile', 'r');
$writing = fopen('myfile.tmp', 'w');
$replaced = false;
while (!feof($reading)) {
$line = fgets($reading);
if (stristr($line, $search)) {
$line = "$result\n";
$replaced = true;
}
fputs($writing, $line);
}
if (!$replaced) fputs($writing, "$result\n");
fclose($reading); fclose($writing);
rename('myfile.tmp', 'myfile');
This seems to work for the find and replace, but if the line doesn't exist it keeps adding it not just once.
I know this is due to the if (!$replaced) line, but I'm not sure how to do this.
The example above is small, but there could be a few thousand entries in the file..
Thanks

Answer 1

function file_properties($fileProperties) {
$result = array();
$lines = split("\n", $fileProperties);
$key = "";
$isWaitingOtherLine = false;
foreach($lines as $i=>$line) {
if(empty($line) || (!$isWaitingOtherLine && strpos($line,"#") === 0)) continue;
if(!$isWaitingOtherLine) {
$key = substr($line,0,strpos($line,'='));
$value = substr($line,strpos($line,'=') + 1, strlen($line));
} else {
$value .= $line;
}
/* Check if ends with single '\' */
if(strrpos($value,"\\") === strlen($value)-strlen("\\")) {
$value = substr($value, 0, strlen($value)-1)."\n";
$isWaitingOtherLine = true;
} else {
$isWaitingOtherLine = false;
}
$result[$key] = $value;
unset($lines[$i]);
}
return $result;
}
This will read and write values to file with any extension like .env in Laravel or anything *.properties in Java