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ftell

Description

The ftell of Filesystem for PHP returns the current position of the file read/write pointer.

Syntax

ftell(
    resource $stream
): int|false

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

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

1 · stream

<?

$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/1.txt';
$mode = 'r';

$stream = fopen($filename, $mode);

    fgets($stream, 3);

    $return = ftell($stream);

    echo $return;

fclose($stream);

2