Get URLs lowest path by domain - php

Question

I have an array that looks like the following...
$urls = array(
"http://www.google.com",
"http://www.google.com/maps",
"http://www.google.com/mail",
"https://drive.google.com/help",
"https://www.youtube.com",
"https://www.youtube.com/feed/subscriptions",
"https://www.facebook.com/me",
"https://www.facebook.com/me/friends"
);
I find this hard to explain but I want to break this array down to only show the lowest path for each domain with no duplicates, so it looks like this...
$urls = array(
"http://www.google.com",
"https://drive.google.com/help",
"https://www.youtube.com",
"https://www.facebook.com/me"
);

Answer 1

This can be achieved by walking through the array and inspecting the host key by using parse_url(). The following logic will give your desired result.
$output = array();
//Sort the array by character length
usort($urls, function($a, $b) {
return strlen($a)-strlen($b);
});
array_walk($urls, function($url) use (&$output) {
//Parse the URL to get its components
$parsed_url = parse_url($url);
//See if we've already added the host to our final array
if( array_key_exists($parsed_url['host'], $output) === FALSE ) {
//We haven't, so we can now add the url to our final array
$output[$parsed_url['host']] = $url;
}
});
https://eval.in/415655

Answer 2

try this,
$urls = array(
"http://www.google.com",
"http://www.google.com/maps",
"http://www.google.com/mail",
"https://drive.google.com/help",
"https://www.youtube.com",
"https://www.youtube.com/feed/subscriptions",
"https://www.facebook.com/me",
"https://www.facebook.com/me/friends"
);
$temp = array();
$res = array();
usort($urls, function($a, $b) {
return strlen($a)-strlen($b);
});//sort the array based string length
foreach($urls as $url){
$str = preg_replace('#^https?://#', '', $url);
$strarray = explode("/", $str);
if(!in_array($strarray[0], $temp)){
$temp[] = $strarray[0];
$res[] = $url;
}
}
echo"<pre>";
print_r($res);
echo"</pre>";
output:
Array
(
[0] => http://www.google.com
[1] => https://www.youtube.com
[2] => https://www.facebook.com/me
[3] => https://drive.google.com/help
)