php- cant get result from mysql (mysqli) - php

Question

I'm attempting to set up an API for an app project.
I've got a mysql table called 'users', which I've added a row to.
using the code:
// Create connection
$mysqli = new mysqli("localhost","user", "pass", "db");
// Check connection
if($mysqli->connect_errno){
$result = "Failed to connect to MySQL: " . mysqli_connect_error();
print_r( json_encode($result) );
return false;
}
$row = $mysqli->query("SELECT * FROM users");
print_r( json_encode($row) );
I get an empty result, how come? (connection doesn't throw an error)
to be exact i get:
{"current_field":null,"field_count":null,"lengths":null,"num_rows":null,"type":null}
EDIT:
got the answer to ym original question, thanks!
so now using the code:
$row = $mysqli->query("SELECT * FROM users WHERE email = '".$email."'");
$result = $row->fetch_array();
print_r( json_encode($result) );
I get the result:
{"0":"test","username":"test","1":"test#test.com","email":"test#test.com","2":"test","password":"test","3":"2013-10-18 22:22:53","date_registered":"2013-10-18 22:22:53","4":"1","id":"1"}
where what i want is something like:
{"username":"test","password":"test","email":"test#test.com", ...etc }
how do i get that?

Answer 1

Try this:
$result = $mysqli->query("SELECT * FROM users");
$row = $result->fetch_array(MYSQLI_ASSOC);
print json_encode($row); // json_encode returns a string...
Try this for your associative array:
while($row = $result->fetch_array(MYSQLI_ASSOC))
{
$rows[] = $row;
}
print json_encode($rows);
or you can try... $rows = $result->fetch_all(MYSQLI_ASSOC);

Answer 2

mysqli_query() will return a mysqli_result, you need to fetch (as an array in this case) your rows before doing anything with them. Added a line:
// Create connection
$mysqli = new mysqli("localhost","user", "pass", "db");
// Check connection
if($mysqli->connect_errno){
$result = "Failed to connect to MySQL: " . mysqli_connect_error();
print_r( json_encode($result) );
return false;
}
// Get a mysql_result
$row = $mysqli->query("SELECT * FROM users");
// Get it into an array without numeric indexes
$result = $row->fetch_assoc();
// Display the row
print_r( json_encode($result) );