WriteLog

Last updated on May 30, 2024 | Also applies to ColdFusion

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CFML Reference User Guide

ColdFusion functions

ColdFusion functions by category
Functions a-b
1. Abs
2. ACos
3. AddSOAPRequestHeader
4. AddSOAPResponseHeader
5. AjaxLink
6. AjaxOnLoad
7. ApplicationStop
8. ArrayAppend
9. ArrayAvg
10. ArrayClear
11. ArrayContains
12. ArrayContainsNoCase
13. ArrayDelete
14. ArrayDeleteAt
15. ArrayDeleteNoCase
16. ArrayEach
17. ArrayFilter
18. ArrayFind
19. ArrayFindAll
20. ArrayFindAllNoCase
21. ArrayFindNoCase
22. ArrayInsertAt
23. ArrayIsDefined
24. ArrayIsEmpty
25. ArrayLen
26. ArrayMap
27. ArrayMax
28. ArrayMin
29. ArrayNew
30. ArrayPrepend
31. ArrayReduce
32. ArrayResize
33. ArraySet
34. ArraySetMetadata
35. ArraySlice
36. ArraySort
37. ArraySum
38. ArraySwap
39. ArrayToList
40. Asc
41. ASin
42. Atn
43. AuthenticatedContext
44. AuthenticatedUser
45. BinaryDecode
46. BinaryEncode
47. BitAnd
48. BitMaskClear
49. BitMaskRead
50. BitMaskSet
51. BitNot
52. BitOr
53. BitSHLN
54. BitSHRN
55. BitXor
56. BooleanFormat
Functions-c-d
Functions-e-g
Functions-h-im
Functions-in-k
Functions-l
Functions-m-r
Functions-s
Functions-t-z
1. Tan
2. ThreadJoin
3. ThreadTerminate
4. Throw
5. TimeFormat
6. ToBase64
7. ToBinary
8. ToScript
9. ToString
10. Trace
11. Transactionandconcurrency
12. TransactionCommit
13. TransactionRollback
14. TransactionSetSavePoint
15. Trim
16. UCase
17. URLDecode
18. URLEncodedFormat
19. URLSessionFormat
20. Val
21. ValueList
22. VerifyClient
23. Week
24. Wrap
25. WriteDump
26. WriteLog
27. WriteOutput
28. WSGetAllChannels
29. WSGetSubscribers
30. WSPublish
31. WSSendMessage
32. XmlChildPos
33. XmlElemNew
34. XmlFormat
35. XmlGetNodeType
36. XmlNew
37. XmlParse
38. XmlSearch
39. XmlTransform
40. XmlValidate
41. Year
42. YesNoFormat

ColdFusion tags

ColdFusion tag summary
ColdFusion tags by category
1. Application framework tags
  1. cfapplication
  2. cfassociate
  3. cferror
  4. cfimport
  5. cfinterface
  6. cflock
  7. cfscript
  8. cfthread
2. Communications tags
3. Database manipulation tags
4. Data output tags
  1. cfchart
5. Debugging tags
  1. cfdump
  2. cftimer
  3. cftrace
6. Exception handling tags
  1. cfcatch
  2. cferror
  3. cffinally
  4. cfrethrow
  5. cfthrow
  6. cftry
7. Extensibility tags
  1. cfchart
  2. cfchartdata
  3. cfchartseries
  4. cfcollection
  5. cfcomponent
  6. cfexecute
  7. cfftp
  8. function
  9. cfindex
  10. cfinterface
  11. cfinvoke
  12. cfinvokeargument
  13. cfobject
  14. cfproperty
  15. cfreport
  16. cfreportparam
  17. cfreturn
  18. cfsearch
  19. cfsharepoint
  20. cfspreadsheet
  21. cfwddx
  22. cfxml
8. File management tags
  1. cfdirectory
  2. cffile
  3. cffileupload
  4. cfftp
  5. cfzip
  6. cfzipparam
9. Flow-control tags
  1. cfabort
  2. cfbreak
  3. cfcase
  4. cfcontinue
  5. cfdefaultcase
  6. cfelse
  7. cfelseif
  8. cfexecute
  9. cfexit
  10. cfif
  11. cfinclude
  12. cflocation
  13. cfloop
  14. cfrethrow
  15. cfswitch
  16. cfthrow
  17. cftry
10. Forms tags
  1. cfapplet
  2. cfcalendar
  3. cffileupload
  4. cfform
  5. cfformgroup
  6. cfformitem
  7. cfgrid
  8. cfgridcolumn
  9. cfgridrow
  10. cfgridupdate
  11. cfinput
  12. cfpdf
  13. cfpdfform
  14. cfpdfformparam
  15. cfpdfparam
  16. cfpdfsubform
  17. cfselect
  18. cfslider
  19. cftextarea
  20. cftree
  21. cftreeitem
11. Internet Protocol tags
  1. cfajaximport
  2. cfajaxproxy
  3. cfftp
  4. cffeed
  5. cfimap
  6. cfhttp
  7. cfhttpparam
  8. cfldap
  9. cfmail
  10. cfmailparam
  11. cfmailpart
  12. cfpop
  13. cfsprydataset
12. Page processing tags
  1. cfcache
  2. cfcontent
  3. cfflush
  4. cfheader
  5. cfhtmlhead
  6. cfinclude
  7. cfprocessingdirective
  8. cfsetting
  9. cfsilent
13. Security tags
14. Variable manipulation tags
  1. cfcookie
  2. cfdump
  3. cfparam
  4. cfregistry
  5. cfsavecontent
  6. cfschedule
  7. cfset
  8. cfsetting
15. Other tags
  1. cfimage
  2. cflog
  3. cfregistry
Tags a-b
Tags c
Tags f
Tags g-h
1. cfgraph
2. cfgraphdata
3. cfgrid
4. cfgridcolumn
5. cfgridrow
6. cfgridupdate
7. cfheader
8. cfhtmlhead
9. cfhtmltopdf
10. cfhtmltopdfitem
11. cfhttp
12. cfhttpparam
Tags i
1. cfif
2. cfimage
3. cfimap
4. cfimapfilter
5. cfimpersonate
6. cfimport
7. cfinclude
8. cfindex
9. cfinput
10. cfinsert
11. cfinterface
12. cfinvoke
13. cfinvokeargument
Tags j-l
Tags m-o
Tags p-q
1. cfparam
2. cfpdf
3. cfpdfform
4. cfpdfformparam
5. cfpdfparam
6. cfpdfsubform
7. cfpod
8. cfpop
9. cfpresentation
10. cfpresentationslide
11. cfpresenter
12. cfprint
13. cfprocessingdirective
14. cfprocparam
15. cfprocresult
16. cfprogressbar
17. cfproperty
18. cfquery
19. cfqueryparam
Tags r-s
1. cfregistry
2. cfreport
3. cfreportparam
4. cfrethrow
5. cfreturn
6. cfsavecontent
7. cfschedule
8. cfscript
9. cfsearch
10. cfselect
11. cfservlet
12. cfservletparam
13. cfset
14. cfsetting
15. cfsharepoint
16. cfsilent
17. cfslider
18. cfspreadsheet
19. cfsprydataset
20. cfstoredproc
21. cfswitch
Tags t
1. cftable
2. cftextarea
3. cftextinput
4. cfthread
5. cfthrow
6. cftimer
7. cftooltip
8. cftrace
9. cftransaction
10. cftree
11. cftreeitem
12. cftry
Tags u-z
1. cfupdate
2. cfwddx
3. cfwebsocket
4. cfwindow
5. cfxml
6. cfzip
7. cfzipparam

CFML Reference

Cloud services

CFML Reference User Guide
ColdFusion functions
ColdFusion tags
1. ColdFusion tag summary
2. ColdFusion tags by category
  1. Application framework tags
    1. cfapplication
    2. cfassociate
    3. cferror
    4. cfimport
    5. cfinterface
    6. cflock
    7. cfscript
    8. cfthread
  2. Communications tags
  3. Database manipulation tags
  4. Data output tags
    1. cfchart
  5. Debugging tags
    1. cfdump
    2. cftimer
    3. cftrace
  6. Exception handling tags
    1. cfcatch
    2. cferror
    3. cffinally
    4. cfrethrow
    5. cfthrow
    6. cftry
  7. Extensibility tags
    1. cfchart
    2. cfchartdata
    3. cfchartseries
    4. cfcollection
    5. cfcomponent
    6. cfexecute
    7. cfftp
    8. function
    9. cfindex
    10. cfinterface
    11. cfinvoke
    12. cfinvokeargument
    13. cfobject
    14. cfproperty
    15. cfreport
    16. cfreportparam
    17. cfreturn
    18. cfsearch
    19. cfsharepoint
    20. cfspreadsheet
    21. cfwddx
    22. cfxml
  8. File management tags
    1. cfdirectory
    2. cffile
    3. cffileupload
    4. cfftp
    5. cfzip
    6. cfzipparam
  9. Flow-control tags
    1. cfabort
    2. cfbreak
    3. cfcase
    4. cfcontinue
    5. cfdefaultcase
    6. cfelse
    7. cfelseif
    8. cfexecute
    9. cfexit
    10. cfif
    11. cfinclude
    12. cflocation
    13. cfloop
    14. cfrethrow
    15. cfswitch
    16. cfthrow
    17. cftry
  10. Forms tags
    1. cfapplet
    2. cfcalendar
    3. cffileupload
    4. cfform
    5. cfformgroup
    6. cfformitem
    7. cfgrid
    8. cfgridcolumn
    9. cfgridrow
    10. cfgridupdate
    11. cfinput
    12. cfpdf
    13. cfpdfform
    14. cfpdfformparam
    15. cfpdfparam
    16. cfpdfsubform
    17. cfselect
    18. cfslider
    19. cftextarea
    20. cftree
    21. cftreeitem
  11. Internet Protocol tags
    1. cfajaximport
    2. cfajaxproxy
    3. cfftp
    4. cffeed
    5. cfimap
    6. cfhttp
    7. cfhttpparam
    8. cfldap
    9. cfmail
    10. cfmailparam
    11. cfmailpart
    12. cfpop
    13. cfsprydataset
  12. Page processing tags
    1. cfcache
    2. cfcontent
    3. cfflush
    4. cfheader
    5. cfhtmlhead
    6. cfinclude
    7. cfprocessingdirective
    8. cfsetting
    9. cfsilent
  13. Security tags
  14. Variable manipulation tags
    1. cfcookie
    2. cfdump
    3. cfparam
    4. cfregistry
    5. cfsavecontent
    6. cfschedule
    7. cfset
    8. cfsetting
  15. Other tags
    1. cfimage
    2. cflog
    3. cfregistry
3. Tags a-b
4. Tags c
5. Tags f
6. Tags g-h
  1. cfgraph
  2. cfgraphdata
  3. cfgrid
  4. cfgridcolumn
  5. cfgridrow
  6. cfgridupdate
  7. cfheader
  8. cfhtmlhead
  9. cfhtmltopdf
  10. cfhtmltopdfitem
  11. cfhttp
  12. cfhttpparam
7. Tags i
  1. cfif
  2. cfimage
  3. cfimap
  4. cfimapfilter
  5. cfimpersonate
  6. cfimport
  7. cfinclude
  8. cfindex
  9. cfinput
  10. cfinsert
  11. cfinterface
  12. cfinvoke
  13. cfinvokeargument
8. Tags j-l
9. Tags m-o
10. Tags p-q
  1. cfparam
  2. cfpdf
  3. cfpdfform
  4. cfpdfformparam
  5. cfpdfparam
  6. cfpdfsubform
  7. cfpod
  8. cfpop
  9. cfpresentation
  10. cfpresentationslide
  11. cfpresenter
  12. cfprint
  13. cfprocessingdirective
  14. cfprocparam
  15. cfprocresult
  16. cfprogressbar
  17. cfproperty
  18. cfquery
  19. cfqueryparam
11. Tags r-s
  1. cfregistry
  2. cfreport
  3. cfreportparam
  4. cfrethrow
  5. cfreturn
  6. cfsavecontent
  7. cfschedule
  8. cfscript
  9. cfsearch
  10. cfselect
  11. cfservlet
  12. cfservletparam
  13. cfset
  14. cfsetting
  15. cfsharepoint
  16. cfsilent
  17. cfslider
  18. cfspreadsheet
  19. cfsprydataset
  20. cfstoredproc
  21. cfswitch
12. Tags t
  1. cftable
  2. cftextarea
  3. cftextinput
  4. cfthread
  5. cfthrow
  6. cftimer
  7. cftooltip
  8. cftrace
  9. cftransaction
  10. cftree
  11. cftreeitem
  12. cftry
13. Tags u-z
  1. cfupdate
  2. cfwddx
  3. cfwebsocket
  4. cfwindow
  5. cfxml
  6. cfzip
  7. cfzipparam
CFML Reference
1. Reserved words and variables
2. Ajax JavaScript functions
3. ColdFusion ActionScript functions
4. ColdFusion mobile functions
5. Application.cfc reference
6. Script functions implemented as CFCs
7. ColdFusion Flash Form style reference
8. ColdFusion event gateway reference
9. ColdFusion C++ CFX Reference
10. ColdFusion Java CFX reference
11. WDDX JavaScript Objects
Cloud services

Description

A function equivalent of the cflog tag, which can be used in <cfscript>.

Parameters

Same as the <cflog> tag:

Parameter	Req/Opt	Default	Description
text	Required		Message text to log.
application	Optional	yes	yes: logs the application name, if it is specified in a cfapplication tag or Application.cfc file. no
file	Optional		Message file. Specify only the main part of the filename. For example, to log to the Testing.log file, specify "Testing". The file must be located in the default log directory. You cannot specify a directory path. If the file does not exist, it is created automatically, with the extension .log.
log	Optional		If you omit the file parameter, writes messages to standard log file. Ignored, if you specify file parameter. Application: writes to Application.log, normally used for application-specific messages. Scheduler: writes to Scheduler.log, normally used to log the execution of scheduled tasks.
type	Optional	Information	Type (severity) of the message: Information Warning Error Fatal

Function syntax

WriteLog (text, type, application, file, log)

WriteLog (text, type, application, file, log)

For positional notation, the sequence must be followed exactly in the same manner as provided in the syntax. If you do not provide one of the parameters, use an empty string instead. This does not apply to Boolean values for which you must provide proper values even if you have to skip them.

History

ColdFusion 11: Parameters passed to this function needs to be in a comma-separated format.

Usage

You can call this function as name=value pair or as positional argument.

Example

function TotalInterest(principal, annualRate, months) {

var years = 0;

var interestRate = 0;

var totalInterest = 0;

principal = REReplace(trim(principal), "[\$]", "", "ALL");

annualRate = Replace(trim(annualRate), "%", "", "ALL");

if ((principal <= 0) OR (annualRate <= 0) OR (months <= 0)) {

Throw(type="InvalidData",message="All values must be greater than 0.");

}

interestRate = annualRate / 100;

years = months / 12;

totalInterest = principal * (((1 + interestRate) ^ years) - 1);

return DollarFormat(totalInterest);

}

try {

Trace(type="Information", inline="true", text="Calculating interest.");

WriteOutput(TotalInterest("$2500.00", "5.5%", "12"));

Trace(type="Information", inline="true", text="Interest calculation done.");

}

catch(InvalidData ex) {

//Writing the exception to log file under logs folder of web server.

WriteLog(type="Error", file="myapp.log", text="[#ex.type#] #ex.message#");

}

</cfscript>

<cfscript> function TotalInterest(principal, annualRate, months) { var years = 0; var interestRate = 0; var totalInterest = 0; principal = REReplace(trim(principal), "[\$]", "", "ALL"); annualRate = Replace(trim(annualRate), "%", "", "ALL"); if ((principal <= 0) OR (annualRate <= 0) OR (months <= 0)) { Throw(type="InvalidData",message="All values must be greater than 0."); } interestRate = annualRate / 100; years = months / 12; totalInterest = principal * (((1 + interestRate) ^ years) - 1); return DollarFormat(totalInterest); } try { Trace(type="Information", inline="true", text="Calculating interest."); WriteOutput(TotalInterest("$2500.00", "5.5%", "12")); Trace(type="Information", inline="true", text="Interest calculation done."); } catch(InvalidData ex) { //Writing the exception to log file under logs folder of web server. WriteLog(type="Error", file="myapp.log", text="[#ex.type#] #ex.message#"); } </cfscript>

<cfscript> 
    function TotalInterest(principal, annualRate, months) { 
        var years = 0; 
        var interestRate = 0; 
        var totalInterest = 0; 
        principal = REReplace(trim(principal), "[\$]", "", "ALL"); 
        annualRate = Replace(trim(annualRate), "%", "", "ALL"); 
 
    if ((principal <= 0) OR (annualRate <= 0) OR (months <= 0)) { 
        Throw(type="InvalidData",message="All values must be greater than 0."); 
    } 
 
    interestRate = annualRate / 100; 
    years = months / 12; 
    totalInterest = principal * (((1 + interestRate) ^ years) - 1); 
    return DollarFormat(totalInterest); 
    } 
 
    try { 
        Trace(type="Information", inline="true", text="Calculating interest."); 
        WriteOutput(TotalInterest("$2500.00", "5.5%", "12")); 
        Trace(type="Information", inline="true", text="Interest calculation done."); 
    } 
 
    catch(InvalidData ex) {
        //Writing the exception to log file under logs folder of web server. 
        WriteLog(type="Error", file="myapp.log", text="[#ex.type#] #ex.message#"); 
    } 
</cfscript>

Output

$137.50

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WriteLog

Description

Parameters

Category

Function syntax

See also

Usage

Example

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