How to get longer compile times in PHP - php

Question

I was wondering how can I write a PHP script that needs a longer compile time?
I want to do this to test in the OPCache extension works.
Later edit:
When a PHP script is loading, the code is compiled into bytecode and this bytecode will be interpreted by CPU. The compilation process usually takes some milliseconds but I need to make this time extremely large to test the OPCache extension from PHP 5.5. This extension should cache the script bytecode so that it won't need to compile the script again.

Answer 1

As #PaulCrovella said in the comments, what I needed was ApacheBench.
By using the command ab http://localhost/index.php on a script with about 600.000 lines of code, the results were:
On the first benchmark test:
Server Software: Apache/2.4.9
Server Hostname: localhost
Server Port: 80
Document Path: /index.php
Document Length: 4927 bytes
Concurrency Level: 1
Time taken for tests: 0.944 seconds
Complete requests: 1
Failed requests: 0
Total transferred: 5116 bytes
HTML transferred: 4927 bytes
Requests per second: 1.06 [#/sec] (mean)
Time per request: 944.054 [ms] (mean)
Time per request: 944.054 [ms] (mean, across all concurrent requests)
Transfer rate: 5.29 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 944 944 0.0 944 944
Waiting: 939 939 0.0 939 939
Total: 944 944 0.0 944 944
On the second benchmark test:
Server Software: Apache/2.4.9
Server Hostname: localhost
Server Port: 80
Document Path: /index.php
Document Length: 4927 bytes
Concurrency Level: 1
Time taken for tests: 0.047 seconds
Complete requests: 1
Failed requests: 0
Total transferred: 5116 bytes
HTML transferred: 4927 bytes
Requests per second: 21.28 [#/sec] (mean)
Time per request: 47.003 [ms] (mean)
Time per request: 47.003 [ms] (mean, across all concurrent requests)
Transfer rate: 106.29 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 47 47 0.0 47 47
Waiting: 43 43 0.0 43 43
Total: 47 47 0.0 47 47