Does the PHP __autoload () method really affect performance? _php Tutorials

Introduction

For PHP performance problems, the most talked about is the __autoload () method, many people mention that this method has a significant impact on performance. Others say that opcode can also affect the __autoload () method, so I made a test for these two points.
Finally, it is found that the __autoload method has no significant performance impact.

Environment

php:5.3.9--booting in fastcgi mode
nginx:1.1.12
eaccelerator:0.9.6.1

。 Finally, it is found that the __autoload method has no significant performance impact.
Environment php:5.3.9--start nginx:1.1.12 eaccelerator:0.9.6.1 in fastcgi mode:

Start interface:

Eaccelerator (in the php.ini file) configuration:

File structure: (each test file is a file with more than 6,000 lines of code)

Test: Test code with Eaccelerator cache: __autoload Loaded

Figure 1

The results I found in my browser were as follows: Total time:0.10401391983032total time:0.10252094268799total time:0.095267057418823total Time:0 .10013008117676Total time:0.096842050552368total time:0.097998142242432total time:0.10348510742188total Time:0. 096648931503296 test: Without __autoload ()

Figure 2

Test results-by swiping the browser total time:0.10309100151062total time:0.10285210609436total time:0.10154414176941total Time:0. 097845792770386Total time:0.099545001983643total time:0.10166597366333 Final results: The AutoLoad method does not have a noticeable performance degradation test: Cancel Eaccelerator Cache test results in Figure 1 Total time:0.24992394447327total time:0.25681900978088total time:0.25327301025391total Time:0.22580695152283total time:0.22656512260437total time:0.22530484199524total Time:0.23080611228943 The test results in Figure 2 Total time:0.23054909706116total time:0.22633790969849total time:0.23442888259888total Time:0. 2350070476532Total Time:0.22897601127625total time:0.23207712173462

The __autoload () method has no significant effect on performance.

It is concluded that the 1>__autoload method has no significant performance loss through the above two groups of experiments. So let's not go between using the __autoload method. 2>opcode the impact on the code is relatively large, obviously using opcode, PHP code execution speed increased by nearly twice times more.

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