PHP fseek() Function
Complete PHP Filesystem Reference
Definition and Usage
The fseek() function seeks in an open file.
This function moves the file pointer from its current position to a new position, forward or backward, specified by the number of bytes.
This function returns 0 on success, or -1 on failure. Seeking past EOF will not generate an error.
Syntax
fseek(file,offset,whence)
| Parameter | Description |
|---|---|
| file | Required. Specifies the open file to seek in |
| offset | Required. Specifies the new position (measured in bytes from the beginning of the file) |
| whence | Optional. (added in PHP 4). Possible values:
|
Tips and Notes
Tip: Find the current position by using ftell()!
Example
<?php
$file = fopen("test.txt","r");
// read first line
fgets($file);
// move back to beginning of file
fseek($file,0);
?>
Complete PHP Filesystem Reference
