php array doesnt write to file as expected -

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basically im reading file, pushing array, , rewriting file arrays no data lost

this text file after write array. pirmadienis,antradienis,etc stored on different arrays. when write "pirmadienis" array starts in second line , pushed other 1 side.

pirmadienis "array fwrite here" antradienis treciadienis ketvirtadienis penktadienis

this php use. $pirm array "pirmadienis". use 4 more foreach loops each array writen file. ideas why creating new line?

$file = fopen($failas,"w+"); foreach($pirm $key => $value) { fwrite($file,$value);  }


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