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PHP Manual

# ftell

(PHP 4, PHP 5)

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

### 설명

int ftell ( resource `$handle` )

Returns the position of the file pointer referenced by `handle` .

### 인수

`handle`

  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).

### 반환값

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

If an error occurs, returns `FALSE`.

### 예제

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);
?>`

### 참고

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

fstat
ftruncate
파일시스템 함수 목록
PHP Manual