title: JSON encode output with symbol "\/" with PHP
body: <p>I new in PHP programming and I try to make simple API with simple PHP. Below my snippet code : </p>
  
  <pre><code>$con = mysqli_connect(HOST, USER, PASS, DB);
  $sql_results = mysqli_query($con, "SELECT * FROM `table-images`");
  $rows = array();
  while($r = mysqli_fetch_assoc($sql_results)) {
    $rows[] = $r;
  }
  echo'{"response":'.json_encode($rows).'}';
  </code></pre>
  
  <p>The code above have JSON output like below : </p>
  
  <pre><code>{"response":[{"id":"31","shirtImage":"Content\/Images\/Short Sleeve\/874be7b82812f76c944d71706c9651eb.gif"},{"id":"32","shirtImage":"Content\/Images\/Short Sleeve\/b-Cleaned.png"}]}
  </code></pre>
  
  <p>I want to know why value of field <code>shirtImage</code> have extra symbol <code>\</code> . In my database the value is correct example <code>Content/Images/Short Sleeve/b-Cleaned.png</code> but when it encode to JSON the output have changed. How to fix this?</p>
  
  <p>I find some keyword regarding my case, but it still does not work.</p>