linux - PHP fwrite doesn't update the file using the append mode -

the following code working doesn't update contents of file created.

i can see file contents have changed (the size increased) when download file server it's empty. file chmod 666 , parent directory well.

its linux server running apache , php. i've tried using fflush force flush contents.

<?php  header("location: http://www.example.com"); $handle = fopen("log.txt", "a"); foreach($_post $variable => $value) {    fwrite($handle, $variable);    fwrite($handle, '=');    fwrite($handle, $value);    fwrite($handle, '\r\n'); }  fwrite($handle, '\r\n'); fflush($handle); fclose($handle);  ?> 

what problem?

thanks!

i think practice check if file writable is_writable if can opened checking value returned fopen, way code right.

try this:

$filename = "log.txt"; $mode = "a"; // let's make sure file exists , writable first. if (is_writable($filename)) {      // in our example we're opening $filename in append mode.     // file pointer @ bottom of file hence     // that's $somecontent go when fwrite() it.     if (!$handle = fopen($filename, $mode)) {          echo "cannot open file ($filename)";          exit;     }      foreach($_post $variable => $value) {        fwrite($handle, $variable);        fwrite($handle, '=');        fwrite($handle, $value);        fwrite($handle, '\r\n');     }      fwrite($handle, '\r\n');     fflush($handle);     fclose($handle);     echo "content written file ($filename)";  } else {     echo "the file $filename not writable"; }