Php code optimization problem
a.php and b.php are available in the linux environment. Now the code relationship is as follows. It takes more than 6 seconds to execute a.php. How can you optimize it so that a.php can be executed within 3 seconds?
a.php
$test = new test();
$arr = ["","",""]
foreach($arr as $value){
$test->check($value)
}
b.php
class test
{
public function check($value){
sleep(2);
//,,.
}
}
the method I think of is to change the a.php to the following, but if the parameters of Chongqing and Shandong become an array and cannot be passed through cli (json_encode,serious and other methods have been tried, but b.php cannot be restored to an array after receiving it), what should I do?
$arr = ["","",""]
foreach($arr as $value){
exec("php b.php $value > /dev/null &")
}
sleep (1);
the php single process is blocked, and you will definitely delay loading if you use sleep (2). Each cycle takes 2 seconds. So we need to find a way to make it multi-process execution.
The
php curl_multi_exec function can help you.
cli can of course be parameterized, but it can only be passed as a string. You can json_decode the array after json_encode,. But why not set up a queue. If your check needs to be executed for that long, there must be a lot of data.
set up a queue, throw the data in one by one, and then the processing process of b can set the number of open processes according to the size of the data. no, no, no. In this way, you can definitely finish processing in 1 second
you use cli, and you don't want a result. What you want is a queue. It just takes too long to query the database directly. You can also try NoSql
exec can not meet your needs. If there is / dev/null & , it is asynchronous, and a.php is finished at once. If not, it is still blocking. What's the difference between using exec or not?
Why sleep (2);?
A SQL operation usually does not manipulate 1s
but if the parameters of Chongqing and Shandong are changed into arrays, they cannot be passed through cli (json_encode,serious and other methods have been tried, but b.php cannot be restored to arrays after receiving them
).
I can revert to an array with json_encode
a.php
<?php
$arr = [[1,2,3],[4,5,6],[7,8,9]];
foreach ($arr as $val) {
$val = json_encode($val);
$b = __DIR__ . '/b.php';
exec("nohup php $b $val >> b.out &");
}
b.php
<?php
$val = json_decode($argv[1]);
test::check($val);
class test {
public function check($val) {
sleep(2);
print_r($val);
}
}
b.out
Array
(
[0] => 1
[1] => 2
[2] => 3
)
Array
(
[0] => 4
[1] => 5
[2] => 6
)
Array
(
[0] => 7
[1] => 8
[2] => 9
)
if you just write to the database, you can first splice it into SQL, and then execute the SQL query.
queue, or swoole
