Find if the installed PHP is threadsafe or nonthreadsafe?

Question

How do I find out whether the installed version of PHP is threadsafe or not thread safe?

Please note that I'm not asking the difference between a threadsafe/non thread safe installation. I would like to find out what is installed currently.

see answer in http://stackoverflow.com/questions/1623914/what-is-thread-safe-or-non-thread-safe-in-php — Haim Evgi, Apr 27 '11 at 05:41
@Haim Thats not my question Haim. I saw that thread. I have PHP already installed on this server. Its working with IIS. But,I need to findout which setup was used to install this...Threadsafe setup/ the non theadsafe setup? — Josh, Apr 27 '11 at 05:45

score 204 · Accepted Answer · edited May 23 '17 at 12:34

204

Open a phpinfo() and search for the line Thread safety. For a thread-safe build you should find enable.

As specified in the comments by Muhammad Gelbana you can also use:

On Windows : php -i|findstr "Thread"
On *nix: php -i|grep Thread

edited May 23 '17 at 12:34

Community

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answered Apr 27 '11 at 06:37

grunk

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18

On Windows: `php -i|find "Thread"` On *nix: `php -i|grep Thread` – Muhammad Gelbana Sep 02 '13 at 09:33
8

Note to self: `php -i | find "Architecture"` to check if it is x86 or x64 – checksum Mar 07 '15 at 15:06
@checksum it's `php -i | grep Architecture` – helpse Jul 14 '17 at 20:01

score 24 · Answer 2 · edited Aug 20 '18 at 05:58

24

If you prefer to use the command line:

*nix:
```
php -i | grep -i "Thread"
```
Windows:
```
php -i | findstr -i "thread"
```

This should give you something like this:

Thread Safety => enabled

or

Thread Safety => disabled

edited Aug 20 '18 at 05:58

azjezz

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answered Mar 05 '12 at 14:37

Matt

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Not a very good idea, since the PHP version used by the server can be different from the one picked up by the OS (the default). – Buffalo Aug 02 '17 at 07:18

score 8 · Answer 3 · answered Apr 12 '17 at 20:41

I just find it easier to look at the file named php[version].dll in the root folder of php. Its either php[version].dll or php[version]ts.dll (ts standing for Thread Safe). So, if you have php7.0.10 installed, go to the directory that has this name and you'll find a file named php7ts.dll. This is a very sad way of finding out, but it works!

score 5 · Answer 4 · answered Mar 03 '18 at 12:55

5

Then there's the undocumented ZEND_THREAD_SAFE constant, which seems to exist since PHP 4.3.

<?php

if (ZEND_THREAD_SAFE) {
    echo 'Thread safe';
} else {
    echo 'Not thread safe';
}

https://3v4l.org/tALKX

answered Mar 03 '18 at 12:55

Shira

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score 4 · Answer 5 · edited Dec 17 '16 at 13:50

4

Create a new PHP file and insert this code in it:

<?php
phpinfo(); ?>

Then run this page and you will find all of the PHP information. Search for the term that you want, and it will show you it's enabled.

edited Dec 17 '16 at 13:50

Peter Mortensen

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answered Apr 27 '11 at 07:31

peroxide

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score 2 · Answer 6 · edited May 23 '17 at 12:26

2

Check if your install is Apache Module or CGI Binary. See Stack Overflow question What is thread safe or non-thread safe in PHP?.

edited May 23 '17 at 12:26

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answered Apr 27 '11 at 05:41

Phliplip

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How do I check that? Ofcourse its being used by IIS..But how do I findout what module it is? That was my question...I don't mean to ask the difference between threadsafe/non thread safe. I need to know whether the installed version is thread safe/not – Josh Apr 27 '11 at 05:43
Ok i just investigated a bit, and yes there are [2 builds](http://windows.php.net/download/) available; safe and non-safe. According to this [install guide for IIS7](http://www.php.net/manual/en/install.windows.iis7.php) non-thread-safe installs are recommended. Could you open up a phpinfo() and se if the word 'thread' apears anywhere? – Phliplip Apr 27 '11 at 06:02
yeah,phpinfo had the info in it...Just found it...Thanks @Philiplip – Josh Apr 27 '11 at 07:56

score 1 · Answer 7 · answered Jan 26 '21 at 12:36

Another way to check it is using php -v or php --version. Example bellow from mine (NTS):

    $ php --version
    
    PHP 7.3.25-1+ubuntu20.04.1+deb.sury.org+1 (cli) (built: Dec 26 2020 10:32:51) ( NTS )       
    Copyright (c) 1997-2018 The PHP Group
    Zend Engine v3.3.25, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.3.25-1+ubuntu20.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies

Find if the installed PHP is threadsafe or nonthreadsafe?

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