ftell

    (PHP 4, PHP 5, PHP 7, PHP 8)

    ftell — Returns the current position of the file read/write pointer

    Description

    ftell(resource $stream): int|false

    Returns the position of the file pointer referenced by stream.

    Parameters

    stream

    The file pointer must be valid, and must point to a file successfully opened by fopen() or popen(). ftell() gives undefined results for append-only streams (opened with "a" flag).

    Return Values

    Returns the position of the file pointer referenced by stream as an integer; i.e., its offset into the file stream.

    If an error occurs, returns false.

    Note: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.

    Examples

    Example #1 ftell() example

    <?php

    // opens a file and read some data
    $fp = fopen("/etc/passwd", "r");
    $data = fgets($fp, 12);

    // where are we ?
    echo ftell($fp); // 11

    fclose($fp);

    ?>

    See Also

    • fopen() - Opens file or URL
    • popen() - Opens process file pointer
    • fseek() - Seeks on a file pointer
    • rewind() - Rewind the position of a file pointer

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