PHP | SplFileObject rewind() Function

The SplFileObject::rewind() function is an inbuilt function of Standard PHP Library (SPL) in PHP which is used to Rewind the file to the first line.

Syntax: 

void SplFileObject::rewind( $line_num)

Parameters: This function does not accept any parameter.

Return values: This function does not return any value.

Below Programs illustrate the SplFileObject::rewind() function in PHP:
Program-1:

php

<?php

// PHP program to illustrate
// SplFileObject::rewind function

$file = new SplFileObject(__FILE__);

$file->rewind();

echo $file->current();
?>

Output:

<?php

Program-2:

php

<?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->rewind();
    echo $file->current();
    }
?>

Output:

GeeksforGeeks
gfg
contribute

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