[development] Time for a new chapter of an endless debate

[Angela Byron]

chx helped me figure out how to benchmark tonight, so here are some  
results from some random tests. Tested on Mac OS X 10.4 and MAMP  
1.2.1. The table in question for the fetch tests had about 2,500  
records in it:

PHP 4.4.2:
Initialize 1 million objects: 1192.52 ms
Initialize 1 million arrays: 735.15ms
Fetch object: 2.34ms
Fetch array: 0.81ms
Make object with 1,000 properties: 3ms
Make array with 1,000 keys: 2.51ms
Foreach through 1,000 object properties: 3.78ms
Foreach through 1,000 array keys: 2.6ms

PHP 5.1.2:
Initialize 1 million objects: 811.72 ms
Initialize 1 million arrays: 281.83ms
Fetch object: 0.94ms
Fetch array: 0.72ms
Make object with 1,000 properties: 1.77ms
Make array with 1,000 keys: 1.38ms
Foreach through 1,000 object properties: 0.98ms
Foreach through 1,000 array keys: 1.21ms

My horrible script is below. ;)

Looks like PHP 5 did indeed speed up stuff. In PHP 4, arrays are  
faster across the board, but in PHP 5 it's somewhat mixed. That said,  
these can hardly be called "real world" tests :P but I found it kind  
of interesting.

---

<?php

include 'includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);

echo "Initialize 1 million objects: ";
timer_start('object');
for ($i = 0; $i < 1000000; $i++) {
   $object = new stdClass();
}
$stop = timer_stop('object');
echo $stop['time'] ." ms<br />";

echo "Initialize 1 million arrays: ";
timer_start('array');
for ($i = 0; $i < 1000000; $i++) {
   $array = array();
}
$stop = timer_stop('array');
echo $stop['time'] .'ms <br />';

echo "Fetch object: ";
timer_start('fetch_object');
$result = db_query_temporary("SELECT * FROM {node_revision}");
$i = 0;
while ($object = db_fetch_object($result)) {
   $i++;
}
$stop = timer_stop('fetch_object');
echo $stop['time'] .'ms <br />';

echo "Fetch array: ";
timer_start('fetch_array');
$result = db_query_temporary("SELECT * FROM {node_revision}");
$i = 0;
while ($array = db_fetch_array($result)) {
   $i++;
}
$stop = timer_stop('fetch_array');
echo $stop['time'] .'ms <br />';

echo "Make object with 1,000 properties: ";
timer_start('big_object');
$object = new stdClass();
for ($i = 0; $i < 1000; $i++) {
   $prop = (string)$i;
   $object->$prop = $i;
}
$stop = timer_stop('big_object');
echo $stop['time'] .'ms <br />';

echo "Make array with 1,000 keys: ";
timer_start('big_array');
$array = array();
for ($i = 0; $i < 1000; $i++) {
   $key = (string)$i;
   $array[$key] = $i;
}
$stop = timer_stop('big_array');
echo $stop['time'] .'ms <br />';


echo "Foreach through 1,000 object properties: ";
timer_start('foreach_object');
$i = 0;
foreach ($object as $prop => $value) {
   $object->$prop = $value++;
}
$stop = timer_stop('foreach_object');
echo $stop['time'] .'ms <br />';


echo "Foreach through 1,000 array keys: ";
timer_start('foreach_array');
$i = 0;
foreach ($array as $key => $value) {
   $array[$key] = $value++;
}
$stop = timer_stop('foreach_array');
echo $stop['time'] .'ms <br />';

?>