PHP Random lines from flat file

Hey,

I hope you can help!!

I have a text file (as below), and id like to lines of the text file completely at random. I.e. it could show, line 6, line 9, line 1, line 17 etc etc

TextFile Example:
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Line 9
Line 10
Line 11
Line 12
Line 13
Line 14
Line 15
Line 16
Line 17
Line 18
Line 19
Line 20

i.e. if it was mysql, i could use the following:

SELECT * FROM table ORDER BY RAND() LIMIT 10

Hope you can help!

Chris

 

Hello Chris

Well, try this...

$file = "path_file.txt";
$rows = file($file);

//random lines.
shuffle($rows);

foreach($rows as $r)
{
      echo $r . "<BR>";
}

PHP:

 

That will display all at random, not limit it to 10?

 

Oh yeah

$file = "path_file.txt";
$rows = file($file);

$i = 0;

//random lines.
shuffle($rows);
foreach($rows as $r){ 
     if($i == $limit){ break(1); }
     echo $r . "<BR>";
}

PHP:

 

Oh yeah

<?

$file = "your_file.txt";
$rows = file($file);

//Choose a limit of rows.
$limit = 10;
$i = 0;

//random lines.
shuffle($rows);
foreach($rows as $r){ 
     if($i == $limit){ break(1); }
     echo $r . "<BR>";
     $i++;
}

?>

PHP:

or, using for statement...

<?

$file = "your_file.txt";
$rows = file($file);
//Choose a limit of rows.
$limit = 10;

//random lines.
shuffle($rows);
for($x = 0; $x < $limit; $x++)
{
	echo $rows[$x] . "<BR>";
}

?>

PHP:

 

Or using array_slice:

$file = "path_file.txt";
$rows = file($file);

//random lines.
shuffle($rows);
// get only the first 10
$output = array_slice($rows, 0, 10);

foreach($output as $r)
{
      echo $r . "<BR>";
}

PHP:

http://php.net/array_slice

 

More easiest will be

$lines = file("yourfile.txt");
$rand = rand(1, count($lines));

print $lines[$rand];

PHP:

Not tested, but shud work

 

Wouldn't rand() present to possibility of duplicates?

 

http://php.net/file
http://php.net/array_rand

 

EDIT:

Nevermind... I should read... then reply.