PHP | SplFileObject seek() Function

The SplFileObject::seek() function is an inbuilt function of Standard PHP Library (SPL) in PHP which is used to seek to specify the line.

Syntax:

void SplFileObject::seek( $line_num)

Parameters: This functions accept only one parameter $line_num which specifies the line number of the file.

Return values: This function does not return any value.

Below Programs illustrate the SplFileObject::seek () function in PHP:

Program-1:

<?php

// PHP program to illustrate
// SplFileObject Seek function

$file = new SplFileObject(__FILE__);

$file->seek(3);

echo $file->current();
?>

Output:

// SplFileObject Seek function

Program-2:

<?php

// PHP program to use array to check
// multiple files
$GFG = array(
    "/home/rajvir/Desktop/GeeksforGeeks/dummy.php",
    "gfg.txt",
    "mime.php"
    );

foreach ($GFG as &$file_name) {

    $file = new SplFileObject($file_name);
    $file->seek(3);
    echo $file->current();
    }
?>

Output:

GeeksforGeeks
gfg
contribute

Reference: http://php.net/manual/en/splfileobject.seek.php