How to remove whitespaces from the beginning and end of loop phrase - php

Question

i need to remove whitespaces from the beginning and end of loop phrase
All words come from an loop, and look like this: " Hello all people "
I'm using the code -
$appliedFilters = Mage::getSingleton('catalog/layer')->getState()->getFilters();
foreach ($appliedFilters as $item) {
if ($item->getFilter()->getRequestVar() == 'b_car' || 'c_model' || 'd_year') {
$n_str = string.replace("\"", "", $item->getLabel()));
echo $n_str;
}
}
This code returns "Helloallpeople"
But i need "Hello all people"
Please help!
UPDATED
var_dump($item->getLabel()); returns string(7) "Hello " string(8) "all " string(5) "People "

Answer 1

Try Regx like the following:
$returnValue = preg_replace("/>\s+(.*)\s+</", '>$1<', '<a> Hello all people <a/>');
I am keeping the old answer for reference.
But if you simply want to remove leading and trailing spaces; use trim()
Update:
If you want to trim each and every element of an array; you can map trim function to it.
Then you can also implode the array to a string.
<?php
$str = array(" Hello all ", " Hello all people ", " all people ", " Hello people ");
$n_str = array_map("trim",$str);
var_dump($n_str);
echo implode(" ",$n_str);
?>
Update 2:
Ok I got it; It's not an array. It's a loop.
Every time $item->getLabel() returns just a string. it's not an array.
Following should help you.
$appliedFilters = Mage::getSingleton('catalog/layer')->getState()->getFilters();
$result = "";
foreach ($appliedFilters as $item) {
if ($item->getFilter()->getRequestVar() == 'b_car' || 'c_model' || 'd_year') {
$result .= " ".trim($item->getLabel());
}
}
echo trim($result);

Answer 2

Try this:
$words = $item->getLabel(); //array(" Hello", "all ", "people ");
echo trim(preg_replace("/\s+/", " ", implode($words, " ")));
// Output: Hello all people
See demo