Example of how to use bind_result vs get_result

Subject:

referecens: http://stackoverflow.com/questions/18753262/example-of-how-to-use-bind-result-vs-get-result

 

2015-09-17 18:24:52gstlouis

The deciding factor for me, is whether I call my query columns using *.

Using bind_result() would be better for this:

// Use bind_result() with fetch() $query1 = 'SELECT id, first_name, last_name, username FROM table WHERE id = ?';

Using get_result() would be better for this:

// Use get_result() with fetch_assoc() $query2 = 'SELECT * FROM table WHERE id = ?';

Example 1 for $query1 using bind_result()

$query1 = 'SELECT id, first_name, last_name, username FROM table WHERE id = ?'; $id = 5; if($stmt = $mysqli->prepare($query)){ /* Binds variables to prepared statement i corresponding variable has type integer d corresponding variable has type double s corresponding variable has type string b corresponding variable is a blob and will be sent in packets */ $stmt->bind_param('i',$id); /* execute query */ $stmt->execute(); /* Store the result (to get properties) */ $stmt->store_result(); /* Get the number of rows */ $num_of_rows = $stmt->num_rows; /* Bind the result to variables */ $stmt->bind_result($id, $first_name, $last_name, $username); while ($stmt->fetch()) { echo 'ID: '.$id.'<br>'; echo 'First Name: '.$first_name.'<br>'; echo 'Last Name: '.$last_name.'<br>'; echo 'Username: '.$username.'<br><br>'; } /* free results */ $stmt->free_result(); /* close statement */ $stmt->close(); } /* close connection */ $mysqli->close();

Example 2 for $query2 using get_result()

$query2 = 'SELECT * FROM table WHERE id = ?'; $id = 5; if($stmt = $mysqli->prepare($query)){ /* Binds variables to prepared statement i corresponding variable has type integer d corresponding variable has type double s corresponding variable has type string b corresponding variable is a blob and will be sent in packets */ $stmt->bind_param('i',$id); /* execute query */ $stmt->execute(); /* Store the result (to get properties) */ $stmt->store_result(); /* Get the number of rows */ $num_of_rows = $stmt->num_rows; /* Get the result */ $result = $stmt->get_result(); while ($row = $result->fetch_assoc()) { echo 'ID: '.$row['id'].'<br>'; echo 'First Name: '.$row['first_name'].'<br>'; echo 'Last Name: '.$row['last_name'].'<br>'; echo 'Username: '.$row['username'].'<br><br>'; } /* free results */ $stmt->free_result(); /* close statement */ $stmt->close(); } /* close connection */ $mysqli->close();

As you can see you can't use bind_result with *. However, get_result works for both, but bind_result is simpler and takes out some of the mess with $row['name'].

bind_result()

Pros:

  • Simpler
  • No need to mess with $row['name']
  • Uses fetch()

Cons:

  • Doesn't work with SQL query that use *

get_result()

Pros:

  • Works with all SQL statements
  • Uses fetch_assoc()

Cons:

  • Must mess around with array variables $row[]
  • Not as neat
gstlouis
vote
2015-09-17 18:24:57