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:
- SEEK_SET - Set position equal to offset. Default
- SEEK_CUR - Set position to current location plus offset
- SEEK_END - Set position to EOF plus offset (to move
to a position before EOF, the offset must be a negative value)
|
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
Learn XML with <oXygen/> XML Editor - Free Trial!
 |
|
oXygen helps you learn to define,
edit, validate and transform XML documents. Supported technologies include XML Schema,
DTD, Relax NG, XSLT, XPath, XQuery, CSS.
Understand in no time how XSLT and XQuery work by using the intuitive oXygen debugger!
Do you have any XML related questions? Get free answers from the oXygen
XML forum
and from the video
demonstrations.
Download a FREE 30-day trial today!
|
|
