Question

I have a preg_match_all that is generating an array of urls from a string. The array resembles:

$url[0] = "http://www.siteone.com";
$url[1] = "http://www.sitetwo.com";
$url[2] = "http://www.sitethree.com/example1";
$url[3] = "http://www.sitefour.com";
$url[4] = "http://www.sitethree.com/example2";
$url[5] = "http://www.sitefive";
$url[6] = "http://www.sitesix";
$url[7] = "http://www.siteseven";
$url[8] = "http://www.sitethree.com/example3";

However, I need to be able to search through the #url array to change the value when it contains “http://www.sitethree.com” and set this particular value in the array to “no value”. So that once this process was applied,, it would the array would look like this:

$url[0] = "http://www.siteone.com";
$url[1] = "http://www.sitetwo.com";
$url[2] = "no value";
$url[3] = "http://www.sitefour.com";
$url[4] = "no value";
$url[5] = "http://www.sitefive";
$url[6] = "http://www.sitesix";
$url[7] = "http://www.siteseven";
$url[8] = "no value";

I have tried numerous variations of preg_match_all and if statements within loops but just couldn’t get it. Any help would be greatly appreciated.

Answer 1

foreach ($url as &$value) {
  if (strpos($value, 'http://www.sitethree.com') === 0) {
    $value = 'no value';
  }
}