PHP in_array and String contains

Question

I have any array of data "example.com/imports", "example.com/var", "example.com/js" i want to remove all urls which contain this for sitemap.

Some of my url data is like the following

"example.com/imports/product.html",
"example.com/imports/product1.html",
"example.com/var/cache/5t46fdgdyg7644gfgfdgr",
"example.com/js/scripts.js"

I have this code

for ($i = 0; $i <= count($urls); $i++) {

$url = $urls[$i];

if (in_array($url, $remove_urls)) {
// found remove url
}else{
echo $url;
}
}

However this only removes if the url is exact match such as "example.com/imports" is there a way to check against start

what you want to remove?

Marco Mura
– Marco Mura

2014-11-18 09:21:57 +00:00
Commented Nov 18, 2014 at 9:21 — Marco Mura
– Marco Mura, Commented Nov 18, 2014 at 9:21

hsz · Accepted Answer · 2014-11-18 10:00:08Z

4

Instead of in_array($url, $remove_urls) try to use strpos:

foreach ($urls as $url) {
  $remove = false;

  // loop $remove_urls and check if $url starts with any of them
  foreach ($remove_urls as $remove_url) {
    if (strpos($url, $remove_url) === 0) {
      $remove = true;
      break;
    }
  }

  if ($remove) {
    // remove url
  } else {
    echo $url;
  }
}

edited Nov 18, 2014 at 10:00

answered Nov 18, 2014 at 9:22

hsz

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2 Comments

mldev Over a year ago

Thank you! Works great just had change $remove_urls to $remove_url in strpos

Niet the Dark Absol Over a year ago

Maybe I'm being an efficiency nerd here, but I would prefer if( substr($url,0,strlen($remove_url)) === $remove_url), because strpos will check all positions of the string before failing whereas this only checks the first - the one we're interested in XD

pespantelis · Accepted Answer · 2014-11-18 09:53:30Z

0

You can use preg_grep function like that:

$urls = ['imports', 'var', 'js'];
$url_pattern = '/example.com\/(' . implode('|', $urls) . ')\/.*/';
$removed = preg_grep($url_pattern, $remove_urls);

here an example.

answered Nov 18, 2014 at 9:53

pespantelis

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