PHP - 覆盖文件时出错

Question

I have a PHP file that counts a value that increases very often:

<?$totI=515905;?>

Sometimes another file resets the $totI variable (maybe because it loads and writes it two times together).

How can I fix this?

Answer 1

I fixed it by using fopen($file,"a") instead of fopen($file,"w") and by adding ftruncate after the flock function