what's this line meaning?

[runeveryday]

<?php

ob_start();
$er = error_reporting(0); 

what's the above code meaning?and what it will do?

[trq]

Here is the manual. http://php.net/manual, look them up.

[runeveryday]

Here is the manual. http://php.net/manual, look them up.

i have read it in php manual before i asked this question here,but i still don't know .how to use ob_start? shoud we use this function?

[trq]

Here is the manual. http://php.net/manual, look them up.

i have read it in php manual before i asked this question here,but i still don't know .how to use ob_start? shoud we use this function?

 

If you don't know what it does you don't need it. It has its uses.

 

Im not sure I could explain it any better than the official documentation could.