Description:
------------
When using mysql with bind_params on blob data only the first 4 bytes of data get included.




Reproduce code:
---------------
<?php
  $mysqli = new mysqli("localhost", "user", "pass", "db");
 /* check connection */
 if (mysqli_connect_errno()) {
  printf("Connect failed: %s\n", mysqli_connect_error());
  exit();
 }
 $filename = "/path_to/files/5_copy14.jpg";
 /* create a prepared statement */
 $stmt =  $mysqli->stmt_init();
 $stmt->prepare("insert into user_image (image) values (?)");
 $data = fread(fopen($filename, "rb"), filesize($filename));
 $stmt->bind_param('b',$data);       /* Prove that the $data variable contains the correct data */
 print $data;
 $stmt->execute();
 $stmt->close();
 $mysqli->close();
?>

Expected result:
----------------
Image is displayed and image data is inserted into database 

Actual result:
--------------
First 4K of image is inserted into database rest seems to be discarded