Runs every PHP script as a single process or a thread?

Question

I'm wondering how the php scripts are executed. I know that they are compiled into bytecode, and the bytecode is executed, but I don't know how that bytecode is executed, what executes that bytecode, etc... Can anybody answer that?

When I open the task manager on Windows (XAMPP), I don't see one process for each PHP script ;) — ComFreek, Nov 14 '11 at 17:27
PHP itself is executing the compiled script. That's why from the command line you execute PHP and give the script as a parm. The web server essentially does the same, executing PHP and giving it the script name. — Jonathan M, Nov 14 '11 at 17:27
Depends on the SAPI. With Apache+mod_php it's typically one process per script/interpreter. As is it with FastCGI. Other setups (IIS) might use threads. What's the practical relevance for this question? — mario, Nov 14 '11 at 17:29
I would give you the points mario if I could :-) Please create an answer from your comment! :-) — inf3rno, Nov 17 '11 at 20:23

score 0 · Accepted Answer · answered Jul 06 '13 at 08:41

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"Depends on the SAPI. With Apache+mod_php it's typically one process per script/interpreter. As is it with FastCGI. Other setups (IIS) might use threads." - mario

answered Jul 06 '13 at 08:41

inf3rno

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score 0 · Answer 2 · edited May 23 '17 at 12:21

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I'm not sure what you want, but if I understand you need to know how php executes a script I think there is already an answer.

edited May 23 '17 at 12:21

Community

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answered Nov 14 '11 at 17:36

Galled

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Runs every PHP script as a single process or a thread?

2 Answers2