fwrite writing from beginning without removing

Question

I am using PHP and fwrite code, but I want every write position to start from the beginning of the file without erasing it\'s content. I am using this code but it is writing

Answer 1

Use fseek() to set your position in the file.

$fr = fopen("aaaa.txt", "r+");
fseek($fr, 0); // this line will set the position to the beginning of the file
fwrite($fr, "text");
fclose($fr);