Help:Parser functions - Revision history

Moka: /* General points */

2010-07-02T21:36:06Z

‎General points

Moka: /* General points */

2010-07-02T21:35:14Z

‎General points

Moka: /* #ifexist */

2010-07-02T21:34:31Z

‎#ifexist

Moka: /* #timel */

2010-07-02T21:33:20Z

‎#timel

Moka: /* Raw equal signs */

2010-07-02T21:31:15Z

‎Raw equal signs

Moka: /* See also */

2010-07-02T21:30:01Z

‎See also

Moka: /* See also */

2010-07-02T21:28:59Z

‎See also

Moka: /* #ifexist */

2010-07-02T21:27:34Z

‎#ifexist

Moka: /* #ifexist */

2010-07-02T21:26:45Z

‎#ifexist

Moka at 21:21, 2 July 2010

2010-07-02T21:21:54Z

@@ Line 600: / Line 600: @@
 ==General points==
 ===Substitution===
-Parser functions can be [[Help:Substitution|substituted]] by prefixing the hash character with <tt>'''subst:'''</tt>:
+Parser functions can be substituted by prefixing the hash character with <tt>'''subst:'''</tt>:
 :<tt><nowiki>{{subst:#ifexist:</nowiki> {{FULLPAGENAME}} <nowiki>| [[</nowiki>{{FULLPAGENAME}}<nowiki>]] | </nowiki>{{FULLPAGENAME}}<nowiki> }}</nowiki></tt> &rarr; the code '''<tt><nowiki>[[</nowiki>{{FULLPAGENAME}}<nowiki>]]</nowiki></tt>''' will be inserted in the wikitext since the page {{FULLPAGENAME}} exists.
-{{warning|The results of substituted parser functions are undefined if the expressions contain ''un''substituted volatile code such as [[Help:Magic words#Variables|variables]] or other parser functions. For consistent results, all the volatile code in the expression to be evaluated must be substituted. See [[Help:Substitution]].}}
+{{warning|The results of substituted parser functions are undefined if the expressions contain ''un''substituted volatile code such as [[Help:Magic words#Variables|variables]] or other parser functions. For consistent results, all the volatile code in the expression to be evaluated must be substituted.}}
 ===Tables ===

@@ Line 600: / Line 600: @@
 ==General points==
 ===Substitution===
-Parser functions can be [[w:Help:Substitution|substituted]] by prefixing the hash character with <tt>'''subst:'''</tt>:
+Parser functions can be [[Help:Substitution|substituted]] by prefixing the hash character with <tt>'''subst:'''</tt>:
 :<tt><nowiki>{{subst:#ifexist:</nowiki> {{FULLPAGENAME}} <nowiki>| [[</nowiki>{{FULLPAGENAME}}<nowiki>]] | </nowiki>{{FULLPAGENAME}}<nowiki> }}</nowiki></tt> &rarr; the code '''<tt><nowiki>[[</nowiki>{{FULLPAGENAME}}<nowiki>]]</nowiki></tt>''' will be inserted in the wikitext since the page {{FULLPAGENAME}} exists.
-{{warning|The results of substituted parser functions are undefined if the expressions contain ''un''substituted volatile code such as [[Help:Magic words#Variables|variables]] or other parser functions. For consistent results, all the volatile code in the expression to be evaluated must be substituted. See [[w:Help:Substitution|Help:Substitution]].}}
+{{warning|The results of substituted parser functions are undefined if the expressions contain ''un''substituted volatile code such as [[Help:Magic words#Variables|variables]] or other parser functions. For consistent results, all the volatile code in the expression to be evaluated must be substituted. See [[Help:Substitution]].}}
 ===Tables ===

@@ Line 163: / Line 163: @@
 :<tt><nowiki>{{#ifexist: MediaWiki:Copyright | exists | doesn't exist }}</nowiki></tt> &rarr; {{#ifexist: MediaWiki:Copyright | '''exists''' (because [[{{ns:8}}:Copyright]] has been customised) | '''doesn't exist''' (because [[{{ns:8}}:Copyright]] has not been customised) }}
-<tt>#ifexist:</tt> is considered an "expensive parser function", only a limited number of which can be included on any one page (including functions inside transcluded templates). When this limit is exceeded, the page is categorised into [[:Category:{{MediaWiki:expensive-parserfunction-category}}]], and any further <tt>#ifexist:</tt> functions automatically return false, whether the target page exists or not.
+<tt>#ifexist:</tt> is considered an "expensive parser function", only a limited number of which can be included on any one page (including functions inside transcluded templates).
 If a page checks a target using <tt>#ifexist:</tt>, then that page will appear in the [[{{#special:WhatLinksHere}}]] list for the target page.  So if the code <tt><nowiki>{{#ifexist:Foo}}</nowiki></tt> were included live on this page ({{FULLPAGENAME}}), [[{{#special:WhatLinksHere}}/Foo]] will list {{FULLPAGENAME}}.

@@ Line 561: / Line 561: @@
 ==#timel==
-This function is identical to <tt><nowiki>{{#time: ... }}</nowiki></tt>, except that it uses the local time of the wiki (as set in {{mediawiki|manual:$wgLocaltimezone|$wgLocaltimezone}}) when no date is given.
+This function is identical to <tt><nowiki>{{#time: ... }}</nowiki></tt>, except that it uses the local time of the wiki.
 :<tt><nowiki>{{#time: Y-m-d }}</nowiki></tt> &rarr; '''{{#time: Y-m-d }}'''

@@ Line 285: / Line 285: @@
 :<tt><nowiki>&nbsp;| 1{{=}}2 = template</nowiki></tt>
 :<tt><nowiki>&nbsp;| foo }}</nowiki></tt> &rarr; '''{{#switch: 1=2 | 1=2 = raw | 1<nowiki>=</nowiki>2 = nowiki | 1&#61;2 = html | 1{{=}}2 = template | foo}}'''
 ==#time==

← Older revision		Revision as of 21:30, 2 July 2010
Line 628:		Line 628:
	*[[Help:Parser functions in templates]]		*[[Help:Parser functions in templates]]

−	[[Category:~~Extension help~~\|ParserFunctions]]	+	==References==
		+	<references/>
		+
		+	[[Category:Help\|ParserFunctions]]

@@ Line 627: / Line 627: @@
 ==See also==
 *[[Help:Parser functions in templates]]
 [[Category:Extension help|ParserFunctions]]

@@ Line 157: / Line 157: @@
 :<tt><nowiki>{{#ifexist:</nowiki> XXX{{FULLPAGENAME}}XXX | exists | doesn't exist <nowiki>}}</nowiki></tt> &rarr; '''{{#ifexist: XXX{{FULLPAGENAME}}XXX | exists | doesn't exist }}'''
-The function evaluates to true for [[Help:System messages|system messages]] that have been customised, and for [[Help:Special pages|special pages]] that are defined by the software.
+The function evaluates to true for system messages that have been customised, and for [[Help:Special pages|special pages]] that are defined by the software.
 :<tt><nowiki>{{#ifexist:</nowiki> {{#special:Watchlist}} | exists | doesn't exist <nowiki>}}</nowiki></tt> &rarr; '''{{#ifexist: Special:Watchlist | exists | doesn't exist }}'''

@@ Line 160: / Line 160: @@
 :<tt><nowiki>{{#ifexist:</nowiki> {{#special:Watchlist}} | exists | doesn't exist <nowiki>}}</nowiki></tt> &rarr; '''{{#ifexist: Special:Watchlist | exists | doesn't exist }}'''
-:<tt><nowiki>{{#ifexist:</nowiki> {{#special:CheckUser}} | exists | doesn't exist <nowiki>}}</nowiki></tt> &rarr; {{#ifexist: Special:Checkuser | '''exists''' (because the {{mediawiki|Extension:Checkuser|CheckUser extension}} is installed on this wiki) | '''doesn't exist''' (because the {{mediawiki|Extension:Checkuser|CheckUser extension}} is not installed on this wiki) }}
+:<tt><nowiki>{{#ifexist:</nowiki> {{#special:CheckUser}} | exists | doesn't exist <nowiki>}}</nowiki></tt> &rarr; {{#ifexist: Special:Checkuser | '''exists''' CheckUser extension is installed on this wiki) | '''doesn't exist''' (because the CheckUser extension is not installed on this wiki) }}
 :<tt><nowiki>{{#ifexist: MediaWiki:Copyright | exists | doesn't exist }}</nowiki></tt> &rarr; {{#ifexist: MediaWiki:Copyright | '''exists''' (because [[{{ns:8}}:Copyright]] has been customised) | '''doesn't exist''' (because [[{{ns:8}}:Copyright]] has not been customised) }}

@@ Line 1: / Line 1: @@
-The {{mediawiki|Extension:ParserFunctions|ParserFunctions}} extension provides eleven additional parser functions to supplement the "[[Help:Magic words#Parser functions|magic words]]", which are already present in MediaWiki.  All the parser functions provided by this extension take the form:
+The parser functions extension provides eleven additional parser functions to supplement the "[[Help:Magic words#Parser functions|magic words]]", which are already present in MediaWiki.  All the parser functions provided by this extension take the form:
 :<tt><nowiki>{{</nowiki> '''#functionname''': ''argument 1'' | ''argument 2'' | ''argument 3'' ... <nowiki>}}</nowiki></tt>
@@ Line 42: / Line 42: @@
 :<tt><nowiki>{{#expr:</nowiki> ''expression'' <nowiki>}}</nowiki></tt>
-The available operators are listed to the right, in order of precedence. See {{mediawiki|m:Help:Calculation|Help:Calculation}} for more details of the function of each operator. The accuracy and format of the result returned will vary depending on the operating system of the server running the wiki, and the number format of the site language.
+The available operators are listed to the right, in order of precedence. See [[Help:Calculation]] for more details of the function of each operator. The accuracy and format of the result returned will vary depending on the operating system of the server running the wiki, and the number format of the site language.
-When evaluating using {{mediawiki|w:boolean algebra (logic)|boolean algebra}}, zero evaluates to <tt>false</tt> and any nonzero value, positive or negative, evaluates to <tt>true</tt>:
+When evaluating using boolean algebra, zero evaluates to <tt>false</tt> and any nonzero value, positive or negative, evaluates to <tt>true</tt>:
 :<tt><nowiki>{{#expr: 1 and -1 }}</nowiki></tt> &rarr; '''{{#expr: 1 and -1 }}'''