turn array into string and remove specific item

Question

On my website I have a list of news available at /news/ which displays all news. I allow news to be filtered based on subject by adding categories to the URL like: /news/sports or multiple categories /news/sports+politics+crime

Within my application I explode the URL on the + and build an array which I use to grab the correct news items. In addition to grabbing the items, I also print "Tags" onto the page, with an "X" to remove the given category. So if you went to /news/sports+politics+crime then above the list of News I have printed Sports[X] Politics[X] Crime[X]

What I want to do, is like the [X] to the same URL MINUS the category that is being removed. So the href tag of the crime [X] would be /news/sports+politics but the href tag of sports would be /news/politics+crime

What is the best way to do this?

While generating the page I am looping thru my array of categories like so:

foreach ($category as $cat) {
    echo $cat . '<a href="/news/">[X]</a>';
}

What is the best way to print the link without the category being removed? I was thinking I could somehow flatten the array into a plain old string, and find/replace the given item ex +crime and then turn that back into a URL. Any ideas?

yoavmatchulsky · Accepted Answer · 2013-07-28 15:16:33Z

3

You can use array_diff() to remove the current category from the $category array:

foreach ($category as $cat) {
  $other_categories = array_diff($category, array($cat));
  echo $cat . ' <a href="/news/' . implode('+', $other_categories) . '">[X]</a>';
}

answered Jul 28, 2013 at 15:16

yoavmatchulsky

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1 Comment

Jay Over a year ago

Holy cow, that works perfectly. That is much easier than I had expected. Than you so much for the help

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