How to search Array for multiple values in PHP?

Question

I need to get the keys from values that are duplicates. I tried to use array_search and that worked fine, BUT I only got the first value as a hit.

I need to get both

Answer 1

You can achieve that using array_search() by using while loop and the following workaround:

while (($key = array_search("2009-09-09", $list[0])) !== FALSE) {
  print($key);
  unset($list[0][$key]);
}

^{Source: cue at openxbox at php.net}

For one-multidimensional array, you may use the following function to achieve that (as alternative to array_keys()):

function array_isearch($str, $array){
  $found = array();
  foreach ($array as $k => $v) {
    if (strtolower($v) == strtolower($str)) {
      $found[] = $k;
    }
  }
  return $found;
}

^{Source: robertark, php.net}