mysqli and fetching data - php

Question

I'm new to mysqli, I wrote a function as below.
1 - I couldn't find a way for SELECT * query and having bind_result to assign each column value to the same name variable. (e.g. name column value of #row stores to $name)
I think bind_result() has no function on a SELECT * query?
2 - So I tried another option, to fetch all rows and assign them to appropriate variable manually through a loop. I think I should use $query->fetch_all() or $query->fetch_assoc() for looping but I encounter with this:
Fatal error: Call to undefined method mysqli_result::fetch_all()
or
Fatal error: Call to undefined method mysqli_result::fetch_assoc()
However I did a phpinfo() and saw mysqlnd was enabled and php version is 5.4.7 (running XAMPP v1.8.1)
And 3- what finally I did is below idea that doesn't work either.
function the_names($name)
{
global $db;
if($query = $db->prepare("SELECT * FROM users where name=?"))
{
$query->bind_param('s', $name);
if($query->execute())
{
$query->store_result();
if($query->num_rows > 1)
{
while($row = $query->fetch())
{
echo $row['name']; // Here is the problem
}
}
else
echo "not valid";
$query->close();
}
}
}
I need a way to store all fetched data as what bind_result() does, or having them in an array for later use, and it's much better to know both. tnx

Answer 1

One word to answer all your questions at once - PDO
It has everything you are trying to get from mysqli (in vain):
function the_names($name)
{
global $db;
$query = $db->prepare("SELECT * FROM users where name=?");
$query->execute(array($name));
return $query->fetchAll();
}
$names = the_names('Joe');
foreach ($names as $row) {
echo $row['name'];
}
Note the proper way of using a function. it should never echo anything, but only return the data for the future use

Answer 2

If your mysqli code doesn't have binding_param() you can just write code like below :
$mysqli = new mysqli("localhost" , "root" , "" , "database_name");
$result = $mysqli->query( "SELECT * FROM users where name=" . $name) ;
while ( $row = $result->fetch_assoc() ) {
echo $row["name"];
}
If you use binding_param() code , you also need to set bind_result()
$db = new mysqli("localhost" , "root" , "" , "database_name");
function the_names($name){
global $db;
/* Prepared statement, stage 1: prepare */
if (!($query = $db->prepare("SELECT * FROM users where name=?"))) { # prepare sql
echo "Prepare failed: (" . $db->errno . ") " . $db->error;
}
/* Prepared statement, stage 2: bind and execute */
if (!$query->bind_param("s", $name)) { # giving param to "?" in prepare sql
echo "Binding parameters failed: (" . $query->errno . ") " . $query->error;
}
if (!$query->execute()) {
echo "Execute failed: (" . $query->errno . ") " . $query->error;
}
$query->store_result(); # store result so we can count it below...
if( $query->num_rows > 0){ # if data more than 0 [ that also mean "if not empty" ]
# Declare the output field of database
$out_id = NULL;
$out_name = NULL;
$out_age = NULL;
if (!$query->bind_result($out_id, $out_name , $out_age)) {
/*
* Blind result should same with your database table !
* Example : my database
* -users
* id ( 11 int )
* name ( 255 string )
* age ( 11 int )
* then the blind_result() code is : bind_result($out_id, $out_name , $out_age)
*/
echo "Binding output parameters failed: (" . $query->errno . ") " . $query->error;
}
while ($query->fetch()) {
# print the out field
printf("id = %s <br /> name = %s <br /> age = %s <br />", $out_id, $out_name , $out_age);
}
}else{
echo "not valid";
}
}
the_names("panji asmara");
Reference :
http://php.net/manual/en/mysqli.quickstart.prepared-statements.php