Calculate execution time of pagination in Cakephp - php

Question

I am trying to optimize my query for a page with pagination results in Cakephp and therefore I am looking to calculate the exact time with the PHP function microtime().
That way, I will know better how much time it's taking to execute the certain request.
Moreover, I am trying to cache the results of the pagination through Cache::read and Cache::write, which both are internal Cakephp functions as regards caching methods in Cakephp 2.x.
Thus, what I have at this point is this:
I am thinking that in order to calculate exactly the whole timelapse, should I put the rest of the code inside the while loop ?
Any help would be quite appreciating.
Thanks
$start = microtime(true);
while ($start) {
$this->paginate = $options;
$resultado = $this->paginate('Doctor');
}
$time_elapsed_secs = microtime(true) - $start;
pr($time_elapsed_secs);
foreach ($resultado AS $k => $r) {
$hasProduct = Cache::read(__('thedoctors::') . 'hasProduct_by_dr_' . PAIS . '_' . $r['Doctor']['id'], '1day');
if (empty($hasProduct)) {
$hasProduct = $this->DoctorsProduct->find('all', [
'recursive' => -1,
'fields' => ['Product.*', 'DoctorsProduct.*'],
'joins' => [
['table' => 'td_products',
'alias' => 'Product',
'type' => 'INNER',
'conditions' => [
'Product.id = DoctorsProduct.id_product'
]
]
],
'conditions' => [
'id_doctor' => $r['Doctor']['id'],
'DoctorsProduct.status' => 1
],
'order' => [
'Product.id ASC',
]
]);
Cache::write(__('thedoctors::') . 'hasProduct_by_dr_' . PAIS, $hasProduct, '1day');
}
$resultado[$k]['Products'] = $hasProduct;
$resultado[$k]['Article'] = 0;
}

Answer 1

Well, the approach which I posted it is indeed wrong, that would possibly just loop infinitely. Finally, what I found as a solution to the question would be to just put the microtime function at the very beginning. I declare a new variable as $time.
After this, I am just substracting the actual microtime with the time which was declared beforewards. Works like a charm.
$time = microtime( TRUE );
foreach ($resultado AS $k => $r) {
$hasProduct = Cache::read(__('thedoctors::') . 'hasProduct_by_dr_' . PAIS . '_' . $r['Doctor']['id'], '1day');
if (empty($hasProduct)) {
$hasProduct = $this->DoctorsProduct->find('all', [
'fields' => ['Product.*', 'DoctorsProduct.*'],
'joins' => [
['table' => 'td_products',
'alias' => 'Product',
'type' => 'INNER',
'conditions' => [
'Product.id = DoctorsProduct.id_product'
]
],
],
'conditions' => [
'id_doctor' => $r['Doctor']['id'],
'DoctorsProduct.status' => 1
],
'order' => [
'Product.id ASC',
]
]);
Cache::write(__('thedoctors::') . 'hasProduct_by_dr_' . PAIS,
$hasProduct, '1day');
}
$resultado[$k]['Products'] = $hasProduct;
$resultado[$k]['Article'] = 0;
}
$time = microtime( TRUE ) - $time;
echo $time;
die("123");