Does gloryglorymanunited PHP __autoload method really affect performance?-PHP Tutorial-php.cn

Does gloryglorymanunited PHP __autoload method really affect performance?

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Release： 2016-07-29 08:48:22

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Introduction
Regarding PHP performance issues, the most discussed one is the __autoload() method. Many people mentioned that this method greatly affects performance. Some people also said that opcode can also affect the __autoload() method, so I did a test on these two points.
Finally found that the __autoload method does not have a great impact on performance.
Environment
PHP:5.3.9 - Start in fastcgi mode
Nginx:1.1.12
eaccelerator:0.9.6.1
.

Finally found that the __autoload method does not have a great impact on performance.

Environment

PHP: 5.3.9 - Start in fastcgi mode

Nginx: 1.1.12

eaccelerator: 0.9.6.1

Screenshot:

PHP __autoload方法真的影响性能吗?

Startup interface :

PHP __autoload方法真的影响性能吗?

eAccelerator (in the php.ini file) configuration:

PHP __autoload方法真的影响性能吗?

File structure: (each Test file is a file with more than 6000 lines of code)

PHP __autoload方法真的影响性能吗?

C Test: Test with the EACCELERTOR cache

Test code: After __Autoload load

Figure 1

PHP __autoload方法真的影响性能吗? The results obtained by the refresh in the browser are as follows:

Total time :0.10401391983032

Total Time:0.10252094268799

Total Time:0.095267057418823

Total Time:0.10013008117676

Total Time:0.0968420 50552368

Total Time:0.097998142242432

Total Time:0.10348510742188

Total Time:0.096648931503296

Test: Without __autoload()

85210609436

Total Time:0.10154414176941 PHP __autoload方法真的影响性能吗?

Total Time:0.097845792770386

Total Time: 0.099545001983643

Total Time: 0.10166597366333

The final result: there is no obvious performance degradation in the autoload method

Test: Cancel the eAccelerator cache for testing

Test results in Figure 1

Total Time:0.24992394447327

Total Time:0.25681900978088

Total Time:0.25327301025391

Total Time:0.22580695152283

Total Time:0. 22656512260437

Total Time:0.22530484199524

Total Time:0.23080611228943

Test results in Figure 2

Total Time:0.23054909706116

Total Time:0.22633790969849

Total Time:0.23442888259888

Total Time:0.2350070476532

Total Time :0.22897601127625

Total Time:0.23207712173462

The __autoload() method still has no obvious impact on performance .

Summary

Through the above two sets of experiments, we can conclude that:

1>__autoload method has no obvious performance loss. So don't hesitate to use the __autoload method.

2>opcode has a relatively large impact on the code. It is obvious that when using opcode, the PHP code execution speed increases by nearly 2 times.

The above introduces the gloryglorymanunited PHP __autoload method, does it really affect performance? It includes the content of gloryglorymanunited. I hope it will be helpful to friends who are interested in PHP tutorials.