تابع ‎ftell()‎‎ در PHP

<?php
$file = fopen("test.txt","r");

// Print current position
echo ftell($file);

// Change current position
fseek($file,"15");

// Print current position again
echo "<br>" . ftell($file);

fclose($file);
?>
<?php
$file = fopen("test.txt","r");

// Print current position
echo ftell($file);

// Change current position
fseek($file,"15");

// Print current position again
echo "<br>" . ftell($file);

fclose($file);
?>اجرای کد