title: Is there a way to check existence of arabic character like sukum( ۡ ) in a string which primarily comes attached to other characters
body: <p>So far I have tried to check existence with string position function after even encoding to utf-8 but fails as following</p>
  
  <pre><code>$a="بِسۡمِ";
  $a=mb_convert_encoding($a,"UTF-8","auto");
  
  if (strpos($a, ' ۡ') !== false) {
    echo 'exists';
  }
  else{
    echo"does not exist"
  }
  </code></pre>
  
  <p>and if possible to replace it with other forms such as <code>⟨ˆ⟩</code> or <code>⟨ʼ⟩</code> 
  anyone with any idea will be appreciated. I am not an Arabic speaker nor Arabic background.</p>