Eh bien, je suis devenu curieux aujourd'hui en me basant sur le benchmark @magallanes, alors je l'ai un peu développé. J'ai augmenté certaines des boucles for pour vraiment mettre en évidence les écarts entre les choses. Cela fonctionne sur Apache 2.4, mod_php et PHP 7.2.
Voici un tableau récapitulatif pour faciliter les résultats:
+---------------------------+---------+-----------------+
| Test | Memory | Time |
+---------------------------+---------+-----------------+
| Array | 2305848 | 9.5637300014496 |
| stdClass | 2505824 | 11.212271928787 |
| SomeClass | 164920 | 3.9636149406433 | <-- *
| AnotherClass | 2563136 | 10.872401237488 |
| SetterClass | 905848 | 59.879059791565 |
| SetterClassDefineReturn | 905792 | 60.484427213669 |
| SetterClassSetFromParam | 745792 | 62.783381223679 |
| SetterClassSetKeyAndParam | 745824 | 72.155715942383 |
+---------------------------+---------+-----------------+
* - Winner winner chicken dinner
Voici le script modifié. Je voulais tester les propriétés des paramètres avec des méthodes et des types de définition. J'ai été très surpris de constater que l'utilisation des méthodes de setter ajoute un succès significatif au code. Maintenant accordé, il s'agit d'un test de performances très très spécifique où de nombreuses applications n'atteindront même pas cela. Mais si vous avez un site qui gère 1000 / reqs / seconde avec 1000 classes qui sont utilisées avec des milliers d'objets, vous pouvez voir comment cela peut affecter les performances.
<?php
set_time_limit(500);
class SomeClass {
public $aaa;
public $bbb;
public $ccc;
}
class AnotherClass {
}
class SetterClass {
public $aaa;
public $bbb;
public $ccc;
public function setAAA() {
$this->aaa = 'aaa';
}
public function setBBB() {
$this->bbb = 'bbb';
}
public function setCCC() {
$this->ccc = $this->aaa.$this->bbb;
}
}
class SetterClassDefineReturn {
public $aaa;
public $bbb;
public $ccc;
public function setAAA():void {
$this->aaa = 'aaa';
}
public function setBBB():void {
$this->bbb = 'bbb';
}
public function setCCC():void {
$this->ccc = $this->aaa.$this->bbb;
}
}
class SetterClassSetFromParam {
public $aaa;
public $bbb;
public $ccc;
public function setAAA(string $val): void {
$this->aaa = $val;
}
public function setBBB(string $val): void {
$this->bbb = $val;
}
public function setCCC(string $val): void {
$this->ccc = $val;
}
}
class SetterClassSetKeyAndParam {
public $aaa;
public $bbb;
public $ccc;
public function set(string $key, string $val): void {
$this->{$key} = $val;
}
}
function p($i) {
echo '<pre>';
print_r($i);
echo '</pre>';
echo '<hr>';
}
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<1000; $i++) {
$z = new SomeClass();
for ($j=0; $j<10000; $j++) {
$z->aaa = 'aaa';
$z->bbb = 'bbb';
$z->ccc = $z->aaa.$z->bbb;
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = new AnotherClass();
for ($j=0; $j<5000; $j++) {
$z->aaa = 'aaa';
$z->bbb = 'bbb';
$z->ccc = $z->aaa.$z->bbb;
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = new SetterClass();
for ($j=0; $j<5000; $j++) {
$z->setAAA();
$z->setBBB();
$z->setCCC();
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = new SetterClassDefineReturn();
for ($j=0; $j<5000; $j++) {
$z->setAAA();
$z->setBBB();
$z->setCCC();
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = new SetterClassSetFromParam();
for ($j=0; $j<5000; $j++) {
$z->setAAA('aaa');
$z->setBBB('bbb');
$z->setCCC('aaabbb');
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = new SetterClassSetKeyAndParam();
for ($j=0; $j<5000; $j++) {
$z->set('aaa', 'aaa');
$z->set('bbb', 'bbb');
$z->set('ccc', 'aaabbb');
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = new stdClass();
for ($j=0; $j<5000; $j++) {
$z->aaa = 'aaa';
$z->bbb = 'bbb';
$z->ccc = $z->aaa.$z->bbb;
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
$t0 = microtime(true);
$arraysOf=[];
$inicio=memory_get_usage();
for ($i=0; $i<5000; $i++) {
$z = [];
for ($j=0; $j<5000; $j++) {
$z['aaa'] = 'aaa';
$z['bbb'] = 'bbb';
$z['ccc'] = $z['aaa'].$z['bbb'];
}
$arraysOf[]=$z;
}
$fin=memory_get_usage();
echo '<p>Time Taken (seconds): '.(microtime(true) - $t0).'</p>';
echo '<p>Memory: '.($fin-$inicio).'</p>';
p($z);
Et voici les résultats:
Time Taken (seconds): 3.9636149406433
Memory: 164920
SomeClass Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
-----
Time Taken (seconds): 10.872401237488
Memory: 2563136
AnotherClass Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
----
Time Taken (seconds): 59.879059791565
Memory: 905848
SetterClass Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
----
Time Taken (seconds): 60.484427213669
Memory: 905792
SetterClassDefineReturn Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
----
Time Taken (seconds): 62.783381223679
Memory: 745792
SetterClassSetFromParam Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
----
Time Taken (seconds): 72.155715942383
Memory: 745824
SetterClassSetKeyAndParam Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
----
Time Taken (seconds): 11.212271928787
Memory: 2505824
stdClass Object
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)
----
Time Taken (seconds): 9.5637300014496
Memory: 2305848
Array
(
[aaa] => aaa
[bbb] => bbb
[ccc] => aaabbb
)