Replace last element string after looking the string in php - php

Question

How do I replace the last string after i have loop on each string?
I was able to do this but still not complete
// here my get string ?dir=hello1/hello2/hello3
if (isset($_GET['dir'])) {
$hrefTabs = $_GET['dir'];
if (!empty($hrefTabs)) {
$arrayOfhref = explode('/', $hrefTabs);//I explode string /
foreach ($arrayOfhref as $roothrefline) {
$trimstrhref = preg_replace('/\s+/', '', $roothrefline); // Here i trim white space
$mmhref = ''.$roothrefline.' / '; // Here i assign each strin hyper reference
$toreplace = $roothrefline . ' / ';
$lastobj = substr_replace($mmhref, $toreplace, strlen($mmhref)); // here i want the last element not to have hyper reference attribut
echo $lastobj; // but i get this at output
//hello1 / hello1 / hello2 / hello2 /hello3 / hello3
}
}
}
My out put look like this
hello1 / hello1 / hello2 / hello2 /hello3 / hello3
I want to have it look like this
hello1 / hello2 / hello3

Answer 1

Before your foreach do
$lastElement = array_pop($arrayOfHref);
and display $lastElement just after your loop.
http://php.net/manual/en/function.array-pop.php

Answer 2

$dir = "hello1/hello2/hello3";
if(isset($dir)){
$hrefTabs = $dir;
if(!empty($hrefTabs)){
$arrayOfhref = explode('/', $hrefTabs);//I explode string /
$i = 0;
foreach($arrayOfhref as $roothrefline) {
$trimstrhref = preg_replace('/\s+/', '', $roothrefline); // Here i trim white space
$mmhref = ''.$roothrefline.' / '; // Here i assign each strin hyper reference
$toreplace = $roothrefline . ' / ';
if(++$i === count($arrayOfhref)){
echo $roothrefline;
} else {
echo $mmhref;
}
}
}
}
Something like this...