Reading only x file line

Hello,
I tried to search but found nothing.
I need to read only x file line whiteout reading all other lines, is there any such functions?
Thanks.

 

if it is a large file it`s simplest to do a shell_exec and get the first bit of the file.

If its a small file you want the first line of you can do:

$foo = file("filename");
$firstLine = $foo[0];

voila.

 

Well that's not what i was looking for. It reads whole first.
I have php file witch content like this:

There will be like 500-600lines... so each time then i need to read only one line i will need to read all lines first.
I already have function like that. I need only to read x line in whatever place.

 

$foo = file("filename");
$firstLine = trim ($foo[$X]); < -- line number in X

 

I think what you need is eval(); expressing a string as code.

$foo = file("filename", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$firstLine = $foo[0];
eval($firstLine);

echo $l; // user1|pass|84.32.1.2|0|3|100

PHP:

note: you may need to remove the <? and ?>

 

I don't think there is a solution to read your file in random access (without loading it as a whole), unless you have lines of a fixed length (you may use fseek() in that case).
If your goal is to speed up your script, why don't you use a SQLite database (support is built-in for PHP5)?
You'll have both the advantages of a structured database and a plain file.

Just my 2 cents.