Description

Reads to EOF on the given file pointer from the current position and writes the results to the output buffer.

If an error occurs, fpassthru() returns FALSE. Otherwise, fpassthru() returns the number of characters read from handle and passed through to the output.

Wskaźnik na plik musi być poprawny i musi wskazywać na plik pomyślnie otwarty przez funkcję fopen() lub fsockopen() (a jednocześnie nie zamknięty jeszcze przez fclose()).

You may need to call rewind() to reset the file pointer to the beginning of the file if you have already written data to the file.

If you just want to dump the contents of a file to the output buffer, without first modifying it or seeking to a particular offset, you may want to use the readfile(), which saves you the fopen() call.

Przykład 1. Using fpassthru() with binary files <?php // open the file in a binary mode $name = './img/ok.png'; $fp = fopen($name, 'rb'); // send the right headers header("Content-Type: image/png"); header("Content-Length: " . filesize($name)); // dump the picture and stop the script fpassthru($fp); exit; ?>

See also readfile(), fopen(), popen(), and fsockopen()