Elective Course
Course Recommendation:
PHP ftell() Function
Definition and Usage
ftell() function in the current position of the file opened
The function returns the current position of the file pointer. If it fails, it returns false.file pointerSyntax
| ) | Parameter |
|---|---|
| file pointer | Description |
Required. Specifies the opened file to be checked.
Description file pointer file must be valid and must point to a file opened by fopen() or popen()
Successfully opened file.
In append mode (open file with parameter "a") ftell() will return an undefined error.
Example
<?php
$file = fopen("test.txt","r");
echo ftell($file);
// Output the current position
// Change the current position
// Again output the current position
echo ftell($file);
fclose($file);
?>
Output:
0 15
