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This page looks into the math that is used by MediaWiki to give various page counts.
==Magic words==
==Magic words==
These first two magic words provide easy answers to the amount of content on the wiki, but are they accurate and useful?
These first two magic words provide easy answers to the amount of content on the wiki, but are they accurate and useful?
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'''NUMBEROFARTICLES''': {{NUMBEROFARTICLES}}
'''NUMBEROFARTICLES''': {{NUMBEROFARTICLES}}


MW code says: From MW 1.18 on, if the count method global is set to 'link', the software gets a distinct count of the entries in the pagelinks table, "pl_from" field, that match those page ids. In other words, it filters out pages that do not link to other pages (the reasoning presumably being that "those aren't real wiki pages" if they're not connecting to anything else). It also filters out redirects. If the method is set to 'comma', it counts all non-blank pages (yes, really).
MW code says: If the count method global is set to 'link', the software gets a distinct count of the entries in the pagelinks table, "pl_from" field, that match those page ids. In other words, it filters out pages that do not link to other pages (the reasoning presumably being that "those aren't real wiki pages" if they're not connecting to anything else). It also filters out redirects. If the method is set to 'comma', it counts all non-blank pages (yes, really).


Iritscen says: Okay, $wgArticleCountMethod has now been set to 'comma'.
Iritscen says: Okay, $wgArticleCountMethod has now been set to 'comma'. (Note: As of MW 1.31, "The 'comma' value for $wgArticleCountMethod is no longer supported for performance reasons, and installations with this setting will now work as if it was configured with 'any'." It appears that 'any' will return the same result, counting all pages that are not redirects.)


'''PAGESINNS''', AKA PAGESINNAMESPACE: These counts agree with the number of pages displayed for each namespace on the [[Special:AllPages]] page, which provides some much-needed verifiability. However, since Allpages counts redirect pages, that means that PAGESINNS does too. Therefore, we can't use a straight sum of PAGESINNS results as our page count. See final section for the adjusted number.
'''PAGESINNS''', AKA PAGESINNAMESPACE: These counts agree with the number of pages displayed for each namespace on the [[Special:AllPages]] page, which provides some much-needed verifiability. However, since Allpages counts redirect pages, that means that PAGESINNS does too. Therefore, we can't use a straight sum of PAGESINNS results as our page count. See final section for the adjusted number.


PAGESINNS breakdown:
PAGESINNS breakdown:
*Namespace '''{{ns:-2}}''' has ID -2, but we can't get a page count
{| class="wikitable"
*Namespace '''{{ns:-1}}''' has ID -1, but we can't get a page count
! Namespace
*Namespace '''Main''' does not return an ID number, but apparently it's 0, because <nowiki>{{PAGESINNS:0}}</nowiki> returns {{PAGESINNS:0}} pages, which agrees with [[Special:AllPages]]
! ID
*Namespace '''{{ns:1}}''' has ID 1 and {{PAGESINNS:1}} pages
! Page count
*Namespace '''{{ns:2}}''' has ID 2 and {{PAGESINNS:2}} pages
|-
*Namespace '''{{ns:3}}''' has ID 3 and {{PAGESINNS:3}} pages
| Media
*Namespace '''{{ns:4}}''' has ID 4 and {{PAGESINNS:4}} pages
| -2
*Namespace '''{{ns:5}}''' has ID 5 and {{PAGESINNS:5}} pages
| <not available>
*Namespace '''{{ns:6}}''' has ID 6 and {{PAGESINNS:6}} pages
|-
*Namespace '''{{ns:7}}''' has ID 7 and {{PAGESINNS:7}} pages
| Special
*Namespace '''{{ns:8}}''' has ID 8 and {{PAGESINNS:8}} pages
| -1
*Namespace '''{{ns:9}}''' has ID 9 and {{PAGESINNS:9}} pages
| <not available>
*Namespace '''{{ns:10}}''' has ID 10 and {{PAGESINNS:10}} pages
|-
*Namespace '''{{ns:11}}''' has ID 11 and {{PAGESINNS:11}} pages
| Main
*Namespace '''{{ns:12}}''' has ID 12 and {{PAGESINNS:12}} pages
| 0
*Namespace '''{{ns:13}}''' has ID 13 and {{PAGESINNS:13}} pages
| {{PAGESINNS:0}}
*Namespace '''{{ns:14}}''' has ID 14 and {{PAGESINNS:14}} pages
|-
*Namespace '''{{ns:15}}''' has ID 15 and {{PAGESINNS:15}} pages
| Talk
*Namespace '''{{ns:100}}''' has ID 100 and {{PAGESINNS:100}} pages
| 1
*Namespace '''{{ns:101}}''' has ID 101 and {{PAGESINNS:101}} pages
| {{PAGESINNS:1}}
*Namespace '''{{ns:102}}''' has ID 102 and {{PAGESINNS:102}} pages
|-
*Namespace '''{{ns:103}}''' has ID 103 and {{PAGESINNS:103}} pages
| User
*Namespace '''{{ns:104}}''' has ID 104 and {{PAGESINNS:104}} pages
| 2
*Namespace '''{{ns:105}}''' has ID 105 and {{PAGESINNS:105}} pages
| {{PAGESINNS:2}}
*Namespace '''{{ns:108}}''' has ID 108 and {{PAGESINNS:108}} pages
|-
*Namespace '''{{ns:109}}''' has ID 109 and {{PAGESINNS:109}} pages
| User talk
*Namespace '''{{ns:110}}''' has ID 110 and {{PAGESINNS:110}} pages
| 3
*Namespace '''{{ns:111}}''' has ID 111 and {{PAGESINNS:111}} pages
| {{PAGESINNS:3}}
|-
| OniGalore
| 4
| {{PAGESINNS:4}}
|-
| OniGalore talk
| 5
| {{PAGESINNS:5}}
|-
| File
| 6
| {{PAGESINNS:6}}
|-
| File talk
| 7
| {{PAGESINNS:7}}
|-
| MediaWiki
| 8
| {{PAGESINNS:8}}
|-
| MediaWiki talk
| 9
| {{PAGESINNS:9}}
|-
| Template
| 10
| {{PAGESINNS:10}}
|-
| Template talk
| 11
| {{PAGESINNS:11}}
|-
| Help
| 12
| {{PAGESINNS:12}}
|-
| Help talk
| 13
| {{PAGESINNS:13}}
|-
| Category
| 14
| {{PAGESINNS:14}}
|-
| Category talk
| 15
| {{PAGESINNS:15}}
|-
| BSL
| 100
| {{PAGESINNS:100}}
|-
| BSL talk
| 101
| {{PAGESINNS:101}}
|-
| OBD
| 102
| {{PAGESINNS:102}}
|-
| OBD talk
| 103
| {{PAGESINNS:103}}
|-
| AE
| 104
| {{PAGESINNS:104}}
|-
| AE talk
| 105
| {{PAGESINNS:105}}
|-
| Oni2
| 108
| {{PAGESINNS:108}}
|-
| Oni2 talk
| 109
| {{PAGESINNS:109}}
|-
| XML
| 110
| {{PAGESINNS:110}}
|-
| XML talk
| 111
| {{PAGESINNS:111}}
|-
|}


'''All articlespaces''' (without File) totalled using PAGESINNS: {{#expr:{{PAGESINNS:0}}+{{PAGESINNS:2}}+{{PAGESINNS:4}}+{{PAGESINNS:8}}+{{PAGESINNS:10}}+{{PAGESINNS:12}}+{{PAGESINNS:14}}+{{PAGESINNS:100}}+{{PAGESINNS:102}}+{{PAGESINNS:104}}+{{PAGESINNS:108}}+{{PAGESINNS:110}}}}
'''All articlespaces''' (without File) totalled using PAGESINNS: {{#expr:{{PAGESINNS:0}}+{{PAGESINNS:2}}+{{PAGESINNS:4}}+{{PAGESINNS:8}}+{{PAGESINNS:10}}+{{PAGESINNS:12}}+{{PAGESINNS:14}}+{{PAGESINNS:100}}+{{PAGESINNS:102}}+{{PAGESINNS:104}}+{{PAGESINNS:108}}+{{PAGESINNS:110}}}}
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==Redirects==
==Redirects==
There were 305 redirects as of 4/5/13 according to [[Special:ListRedirects]].
There were 353 redirects as of 2021-12-13 according to [[Special:ListRedirects]].


Redirect breakdown:
Redirect breakdown:
*Main:      267
{| class="wikitable"
*Talk:        0
|-
*Help:        1
| Main
*Help talk:  1
| 280
*File:        0
|-
*File talk:  0
| Talk
*AE:          5
| 0
*AE talk:    1
|-
*BSL:        2
| User
*BSL talk:    0
| 0
*OBD:        22
|-
*OBD talk:    0
| User talk
*OniGalore:  3
| 0
*Oni2:        3
|-
*Oni2 talk:  0
| OniGalore
*User:        0
| 2
*User talk:  0
|-
*XML:        0
| OniGalore talk
*XML talk:    0
| 0
|-
| File
| 0
|-
| File talk
| 0
|-
| MediaWiki
| 0
|-
| MediaWiki talk
| 0
|-
| Template
| 0
|-
| Template talk
| 0
|-
| Help
| 1
|-
| Help talk
| 1
|-
| Category
| 0
|-
| Category talk
| 0
|-
| BSL
| 2
|-
| BSL talk
| 0
|-
| OBD
| 18
|-
| OBD talk
| 0
|-
| AE
| 0
|-
| AE talk
| 0
|-
| Oni2
| 2
|-
| Oni2 talk
| 0
|-
| XML
| 46
|-
| XML talk
| 0
|}


==Conclusion==
==Conclusion==
NUMBEROFPAGES is too broad to be useful, but now that the page-count method is 'comma', I am able to reconcile NUMBEROFARTICLES with PAGESINNS. PAGESINNS in turn reconciles with AllPages, which lists each page onscreen and is thus verifiable by a direct count (which I have done in the past). So to see how the math works out, we can get the directly-verifiable count by using PAGESINNS on all "content" namespaces, and then manually subtracting redirects as counted above.
NUMBEROFPAGES is too broad to be useful, but now that the page-count method is 'comma' (or 'all'), I am able to reconcile NUMBEROFARTICLES with PAGESINNS. PAGESINNS in turn reconciles with AllPages, which lists each page onscreen and is thus verifiable by a direct count (which I have done in the past). So to see how the math works out, we can get the directly-verifiable count by using PAGESINNS on all "content" namespaces, and then manually subtracting redirects as counted above.


Namespaces '''Main, User, BSL, OBD, XML, AE, and Oni2''' totaled using PAGESINNS: {{#expr:{{PAGESINNS:0}}+{{PAGESINNS:2}}+{{PAGESINNS:100}}+{{PAGESINNS:102}}+{{PAGESINNS:104}}+{{PAGESINNS:108}}+{{PAGESINNS:110}}}}
Namespaces '''Main, User, BSL, OBD, XML, AE, and Oni2''' totaled using PAGESINNS: {{#expr:{{PAGESINNS:0}}+{{PAGESINNS:2}}+{{PAGESINNS:100}}+{{PAGESINNS:102}}+{{PAGESINNS:104}}+{{PAGESINNS:108}}+{{PAGESINNS:110}}}}


Minus redirects that I've counted in those namespaces: {{#expr:{{PAGESINNS:0}}+{{PAGESINNS:2}}+{{PAGESINNS:100}}+{{PAGESINNS:102}}+{{PAGESINNS:104}}+{{PAGESINNS:108}}+{{PAGESINNS:110}}-267-0-2-22-0-5-3}}
Same total minus redirects in those namespaces: {{#expr:{{PAGESINNS:0}}+{{PAGESINNS:2}}+{{PAGESINNS:100}}+{{PAGESINNS:102}}+{{PAGESINNS:104}}+{{PAGESINNS:108}}+{{PAGESINNS:110}}-280-0-2-18-46-0-2}}
 
At the time of this writing (2021-12-13), this gives a total "content minus redirect" total of 919, which is 29 higher than the value (890) returned by NUMBEROFARTICLES. That's an acceptable margin of error, though one that could bear some investigation (I would be curious if the page-count method omits blank or very short pages, which we have a number of). Thus NUMBEROFARTICLES is fit for use on the main page.


At the time of this writing (4/5/13), my personal total is only two higher than the value returned by NUMBEROFARTICLES, which is certainly an acceptable margin of error. So it looks like NUMBEROFARTICLES is reliable!
[[Category:Userspace]]
Retrieved from "https://wiki.oni2.net/Special:MobileDiff/21621...34826"