The following example illustrates how to move a key value pair in an array.
Continue reading PHP – Move key value pair to the top/bottom of an array →

If you come across the following error when using file_get_contents().

• Warning: file_get_contents(www.example.com) [function.file-get-contents]: failed to open stream:

One simple solution is to suppress the warning by adding @ in front of the file_get_contents() and check its returned value. Continue reading PHP – Suppress and catch file_get_contents() warning →

The parse_url() function dissect the URL completely. Try the following PHP code.

<?php
  $url = 'http://username:password@hostname/path?arg=value#anchor';

  // Print all components of the parsed url
  print_r(parse_url($url));

  // Get the anchor part
  echo parse_url($url, PHP_URL_FRAGMENT);
?>

Continue reading PHP – Get the Anchor Part of the URL by parse_url() →

The following PHP function could swap the array elements by the array keys.

function array_swap_assoc($key1, $key2, $array) {
  $newArray = array ();
  foreach ($array as $key => $value) {
    if ($key == $key1) {
      $newArray[$key2] = $array[$key2];
    } elseif ($key == $key2) {
      $newArray[$key1] = $array[$key1];
    } else {
      $newArray[$key] = $value;
    }
  }
  return $newArray;
}

Continue reading PHP – Swap Array Elements By Array Keys →

To check if a string contains another string in PHP, we could use the strpos() function which return the position of the first $needle found in $haystack.

• strpos($haystack, $needle)

Continue reading PHP – Check if a string contains another string →