php - get name of current page from url and reformat string - php

Question

I have the following code that (1) gets the page / section name from the url (2) cleans up the string and then assigns it to a variable.
I was wondering if there are any suggestions to how I can improve this code to be more efficient, possibly less if / else statements.
Also, any suggestion how I can code this so that it accounts for x amount of sub-directories in the url structure. Right now I check up to 3 in a pretty manual way.
I'd like it to handle any url, for example: www.domain.com/level1/level2/level3/level4/levelx/...
Here is my current code:
<?php
$prefixName = 'www : ';
$getPageName = explode("/", $_SERVER['PHP_SELF']);
$cleanUpArray = array("-", ".php");
for($i = 0; $i < sizeof($getPageName); $i++) {
if ($getPageName[1] == 'index.php')
{
$pageName = $prefixName . 'homepage';
}
else
{
if ($getPageName[1] != 'index.php')
{
$pageName = $prefixName . trim(str_replace($cleanUpArray, ' ', $getPageName[1]));
}
if (isset($getPageName[2]))
{
if ( $getPageName[2] == 'index.php' )
{
$pageName = $prefixName . trim(str_replace($cleanUpArray, ' ', $getPageName[1]));
}
else
{
$pageName = $prefixName . trim(str_replace($cleanUpArray, ' ', $getPageName[2]));
}
}
if (isset($getPageName[3]) )
{
if ( $getPageName[3] == 'index.php' )
{
$pageName = $prefixName . trim(str_replace($cleanUpArray, ' ', $getPageName[2]));
}
else
{
$pageName = $prefixName . trim(str_replace($cleanUpArray, ' ', $getPageName[3]));
}
}
}
}
?>

Answer 1

You are currently using a for-loop, but not using the $i iterator for anything - so to me, you could drop the loop entirely. From what I can see, you just want the directory-name prior to the file to be the $pageName and if there is no prior directory set it as homepage.
You can pass $_SERVER['PHP_SELF'] to basename() to get the exact file-name instead of checking the indexes, and also split on the / as you're currently doing to get the "last directory". To get the last directory, you can skip indexes and directly use array_pop().
<?php
$prefixName = 'www : ';
$cleanUpArray = array("-", ".php");
$script = basename($_SERVER['PHP_SELF']);
$exploded = explode('/', substr($_SERVER['PHP_SELF'], 0, strrpos($_SERVER['PHP_SELF'], '/')));
$count = count($exploded);
if (($count == 1) && ($script == 'index.php')) {
// the current page is "/index.php"
$pageName = $prefixName . 'homepage';
} else if ($count > 1) {
// we are in a sub-directory; use the last directory as the current page
$pageName = $prefixName . trim(str_replace($cleanUpArray, ' ', array_pop($exploded)));
} else {
// there is no sub-directory and the script is not index.php?
}
?>
In the event that you want a more breadcumbs-feel, you may want to keep each individual directory. If this is the case, you can update the middle if else condition to be:
} else if ($count > 1) {
// we are in a sub-directory; "breadcrumb" them all together
$pageName = '';
$separator = ' : ';
foreach ($exploded as $page) {
if ($page == '') continue;
$pageName .= (($pageName != '') ? $separator : '') . trim(str_replace($cleanUpArray, ' ', $page));
}
$pageName = $prefixName . $pageName;
} else {

Answer 2

I found this code very helpful
$protocol = strpos(strtolower($_SERVER['SERVER_PROTOCOL']),'https') ===
FALSE ? 'http' : 'https'; // Get protocol HTTP/HTTPS
$host = $_SERVER['HTTP_HOST']; // Get www.domain.com
$script = $_SERVER['SCRIPT_NAME']; // Get folder/file.php
$params = $_SERVER['QUERY_STRING'];// Get Parameters occupation=odesk&name=ashik
$currentUrl = $protocol . '://' . $host . $script . '?' . $params; // Adding all
echo $currentUrl;