How to Hide the js and css files for particular pages - php

Question

I would like to hide the unused js and css files from the php page.
Some of the js files are unused by some pages, so I would like to hide them. By hidding them I can make webpage faster and get good grade in pagetest.
I used simple php code to hide the code for one page. Works good, the file is hidden for that page, for other pages the code not works. It is displaying text instead of link , like a text in textarea..
<?php
function curPageName() {
return substr($_SERVER["SCRIPT_NAME"],strrpos($_SERVER["SCRIPT_NAME"],"/")+1);
}
$currentp=curPageName();
if($currentp=="main1.php"){
echo "";
} else {
//works
echo "<link type=\"text/css\" rel=\"stylesheet\" href=\"../rws.css\" />";
/// not works
echo "<link type=\"text/css\" rel=\"stylesheet\" href=\"http://img.y.com/rws.css\" />";
}
?>
The code works for /rws.css, if I use a http://url.com/rws.css it wont.

Answer 1

Here an example :
<?php
function get_current_file_name () {
$Exploded_Data = explode(‘/’, $_SERVER['PHP_SELF']); //explode the path to current file to array
$Exploded_Data = array_reverse ($Exploded_Data); //reverse the arrays order cos php file name is always after last /
$CurrentPage = $Exploded_Data[0]; // assign the php file name to the currentpage variable
return $CurrentPage;
}
$CurrentPage = get_current_file_name ();
if($CurrentPage!="main1.php"){
echo('<link type="text/css" rel="stylesheet" href="style1.css" />');
}
else if$CurrentPage!="main2.php"){
echo('<link type="text/css" rel="stylesheet" href="style2.css" />');
}
?>
You can use __FILE__ instead of $_SERVER['PHP_SELF']

Answer 2

Is the code getting the correct current page and it's entering the ELSE?
you can use singles quotes and inside double quotes to make sure you're not missing any escape.
if($currentp!="main1.php"){
echo('<link type="text/css" rel="stylesheet" href="http://img.y.com/rws.css" />');
}