So i'm building an statistics section for a website i'm building for work (managers request). i have a functioning code for a '24 hour' graph. The graph code i have works perfectly but i'm having troubles getting the right code for mysql to pull out data based on days rather then hours
Hourly code below
function get_hourly_graph() {
// First lets create a daily graph for experiment then we can build on that
date_default_timezone_set('Australia/Sydney');
$current_hour = date('H');
// SQL Query to get data we want
$sql = mysql_query("SELECT hour( time_hit ) AS hour , count( hour( time_hit ) ) AS hits FROM hits WHERE time_hit > now( ) - INTERVAL 1 DAY GROUP BY hour( time_hit );")
or die(mysql_error());
// Remove an hour off current time for array and the loop that will put the data into the array
$array_hour = $current_hour - 1;
// Add a 0 if the timer is under 10. just so this is compatable with the SQL data
if ($array_hour < 10) {
$array_hour = 0 . $array_hour;
}
// initialise the array so we can set up the indexes and data in the next couple of loops
$hit_data = array();
// Work back the clock 24 hours and create the array indexes
for ($i = 0; $i < 24; $i++) {
$new_hour = $current_hour;
if ($new_hour < 1) {
$new_hour = 24;
$hit_data[$new_hour] = "0";
}
else {
$hit_data[$new_hour] = "0";
}
$current_hour = $new_hour - 1;
}
// Loop through the rest of the array and replace null with 0s
while ($results = mysql_fetch_array($sql, MYSQL_ASSOC)) {
foreach ($hit_data as $hour => $hits) {
if ($results['hour'] == $hour) {
$hit_data[$hour] = $results['hits'];
}
}
}
$hit_data = array_reverse($hit_data, true);
// Generate the graph for the 24 hour data
generate_graph ($hit_data, '24 Hour Report', 'hourly_graph.png', 'Time (Hours)', 'Hits');
}
the 'hits' table is basically 3 fields 'hit_id' 'ip_address' 'timestamp' which is under 'YYYY-MM-DD hh:mm:ss' = "2011-08-04 12:40:34"
How do i change the sql code below to work with days instead of hours?