The ftell Function
The ftell function returns the current position of the pointer
in a file stream. The position is specified in bytes from the beginning
of the file. The function takes one parameter - a pointer to
an open file resource.
Syntax
ftell(resource $handle): int|false
Example
Determine the current position in a newly opened file:
<?php
$file = fopen('test.txt', 'r');
echo ftell($file);
fclose($file);
?>
Code execution result:
0
Example
Determine the position after reading several bytes:
<?php
$file = fopen('test.txt', 'r');
fread($file, 5);
echo ftell($file);
fclose($file);
?>
Code execution result:
5
Example
Check the position after moving the pointer:
<?php
$file = fopen('test.txt', 'r');
fseek($file, 10);
echo ftell($file);
fclose($file);
?>
Code execution result:
10
