how to check how element in array php code example

Example 1: in_array in php

in_array ( mixed $needle , array $haystack [, bool $strict = FALSE ] ) : bool
  
// Without strict check
echo in_array("18", $myArr); // TRUE
// With strict check
echo in_array("18", $myArr, true); // FALSE

Example 2: in_array

<?
in_array("Irix", $os);
?>