Performance comparison of PHP using Curl_* series functions and Curl_multi_* series functions for multi-interface calls

When you call more services in a page, you use a parallel approach, that is, using the Curl_multi_* series functions is less time consuming than the Curl_* series functions.

Test environment
Ten2.4.  - PHP: 5.6.  + MySQL: 5.7.  One CURL: 7.47. 1

Test database Select the sample database of the MySQL official website sakila,:http://dev.mysql.com/doc/index-other.html

The test page requires a call to 3 APIs:

getactorinfo.php

<?PHP//Interface 1$dsn= ' Mysql:host=localhost;dbname=sakila ';$user= ' Root ';$pwd= ' ';Try {    $pdo=NewPDO ($dsn,$user,$pwd);} Catch(pdoexception$e) {    Echo $e-getMessage ();}$sql= ' SELECT * from actor limit 0, 100 ';$query=$pdo->query ($sql);$query->setfetchmode (PDO::FETCH_ASSOC);$rs=$query-Fetchall ();Exit(Json_encode ($rs));

getaddressinfo.php

<?PHP//Interface 2$dsn= ' Mysql:host=localhost;dbname=sakila ';$user= ' Root ';$pwd= ' ';Try {    $pdo=NewPDO ($dsn,$user,$pwd);} Catch(pdoexception$e) {    Echo $e-getMessage ();}$sql= ' SELECT * From address limit 0, 100 ';$query=$pdo->query ($sql);$query->setfetchmode (PDO::FETCH_ASSOC);$rs=$query-Fetchall ();Exit(Json_encode ($rs));

getcityinfo.php

<?PHP//Interface 3$dsn= ' Mysql:host=localhost;dbname=sakila ';$user= ' Root ';$pwd= ' ';Try {    $pdo=NewPDO ($dsn,$user,$pwd);} Catch(pdoexception$e) {    Echo $e-getMessage ();}$sql= ' SELECT * from city limit 0, 100 ';$query=$pdo->query ($sql);$query->setfetchmode (PDO::FETCH_ASSOC);$rs=$query-Fetchall ();Exit(Json_encode ($rs));

First call these 3 interfaces using the Curl_* series function:

<?PHPList($usec,$sec) =Explode(" ",Microtime());$start= (float)$usec+ (float)$sec;$api= [];$api[] = ' http://127.0.0.3/php/high-performance/5/curl/api/getCityInfo.php ';$api[] = ' http://127.0.0.3/php/high-performance/5/curl/api/getAddressInfo.php ';$api[] = ' http://127.0.0.3/php/high-performance/5/curl/api/getActorInfo.php ';$ch= [];foreach($api  as $key=$val) {    $ch[$key] = Curl_init ($val); curl_setopt ($ch[$key], Curlopt_returntransfer,TRUE); $result= Curl_exec ($ch[$key]); Curl_close ($ch[$key]); Var_dump($result);}List($usec,$sec) =Explode(" ",Microtime());$end= (float)$usec+ (float)$sec;$seconds=$end-$start;Echo' Time consuming ',$seconds, ' seconds ';

Take 5 time-consuming averages, respectively:

1th time	2nd time	3rd time	4th time	5th time	Average
0.055s	0.046s	0.058s	0.049s	0.052s	0.052s

Then call these 3 interfaces using the Curl_multi_* series function

<?PHPList($usec,$sec) =Explode(" ",Microtime());$start= (float)$usec+ (float)$sec;$api= [];$api[] = ' http://127.0.0.3/php/high-performance/5/curl/api/getCityInfo.php ';$api[] = ' http://127.0.0.3/php/high-performance/5/curl/api/getAddressInfo.php ';$api[] = ' http://127.0.0.3/php/high-performance/5/curl/api/getActorInfo.php ';$ch= [];foreach($api  as $key=$val) {    $ch[$key] = Curl_init ($val); curl_setopt ($ch[$key], Curlopt_returntransfer,TRUE);}//Multiple Curl resources are added to the $MH handle$MH=curl_multi_init ();foreach($ch  as $key=$val) {Curl_multi_add_handle ($MH,$ch[$key]);}//Execute batch wait all complete$running=NULL; Do{curl_multi_exec ($MH,$running);}  while($running);//get returned content when you are finishedforeach($ch  as $key=$val) {    $result= Curl_multi_getcontent ($ch[$key]); Var_dump($result); //close each handleCurl_multi_remove_handle ($MH,$ch[$key]); }List($usec,$sec) =Explode(" ",Microtime());$end= (float)$usec+ (float)$sec;$seconds=$end-$start;Echo' Time consuming ',$seconds, ' seconds ';

1th time	2nd time	3rd time	4th time	5th time	Average
0.038s	0.049s	0.038s	0.026s	0.027s	0.0356s

The average time to use a multi-interface call with the Curl_* series function is 0.052 seconds, and the average time to call 5 times with curl_multi_* series functions is 0.0356 seconds.

Performance comparison of PHP using Curl_* series functions and Curl_multi_* series functions for multi-interface calls