Difference between mysql_fetch_assoc,mysql_fetch_array & mysql_fetch_object

Difference between  mysql_fetch_row， mysql_fetch_assoc,mysql_fetch_array & mysql_fetch_object ?

 Note: for new version of PHP, below mysql should be replaced by mysqli in function names

1. mysql_fetch_row — Get a result row as an enumerated array

 $rows = mysql_fetch_row( "select name, address from people");

Means you then get each of the row results as a straight array

foreach( $rows as $row )
echo $row[0] . ' lives at ' . $row[1] ;

2.  mysql_fetch_assoc — Fetch a result row as an associative array

 $rows = mysql_fetch_assoc( "select name, address from people" );

Means you then get each of the row results as a named array elements, an associative array.

foreach( $rows as $row )
echo $row['name'] . ' lives at ' . $row['address'];

3. mysql_fetch_array — Fetch a result row as an associative array, a numeric array, or both

3A For a numeric array
$rows = mysql_fetch_array( "select name, address from people");

foreach( $rows as $row )
echo $row[0] . ' lives at ' . $row[1] ;




3B For associate array

Example3 suppose we have posts table with column id, title and text as follows:


$query = "SELECT * FROM posts ORDER BY id DESC LIMIT 10"; 
$result = mysql_query($query);
$posts = array();
while ($row = mysql_fetch_array($result)) {
    $posts[] = array(
         'id' => $row['id'],
         'title' => $row['title'],
         'text' => $row['text']
    );
//equal to  $posts[] = $row;
}
foreach( $posts as $row1 )
{
    echo $row1['title'];
}

4. mysql_fetch_object — Fetch a result row as an object

$rows = mysql_fetch_object( "select name, address from people" );

Means you then get each of the row results using the object notation.

foreach( $rows as $row )
echo $row->name . ' lives at ' . $row->address ;

Reference for The Difference Between mysql_fetch_array() And mysql_fetch_assoc(:
 http://deepbluespaces.blogspot.ca/2008/05/difference-between-mysqlfetcharray-and.html