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ftell
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ftell

Name

ftell — Retrieves the file pointer position.

Synopsis

int ftell(file_handle); resource file_handle: File handle

Returns

File pointer position; FALSE on error

Description

Returns the current position of the file pointer in the file. The position is returned as a number of bytes.

Warning

3.0.5: Unverified bug on SGI IRIX reporting an invalid file pointer after read operation.

Example

Example 327. Seek/read in a file

$fh = fopen("test.txt", "r");

echo ("Current position: ". ftell($fh) ." bytes.<br>");
echo ("Character at this position: ". fgetc($fh) ."<br>");

// advance a few bytes
fseek($fh, 8);

echo ("New position: ". ftell($fh) ." bytes.<br>");
echo ("Character at this position: ". fgetc($fh));

fclose($fh);

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.