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REReplaceNoCase
Last update:
May 18, 2026
Description
Uses a regular expression to search a string for a string pattern and replace it with another. The search is case-insensitive.
Returns
- If scope = "one": returns a string with the first occurrence of the regular expression replaced by the value of substring.
- If scope = "all": returns a string with all occurrences of the regular expression replaced by the value of substring.
- If the function finds no matches: returns a copy of the string, unchanged.
Category
Function syntax
REReplaceNoCase(string, reg_expression, substring [, scope ])See also
History
ColdFusion (2018 release) Update: Added the flag useJavaAsRegexEngine to Application.cfc. Enable this flag to use Java Regex as the default regex engine. For more information, see Application variables. For information on using Regular Expression using the flag, see Using Regular Expressions.
ColdFusion MX: Changed behavior: this function inserts the following special characters in regular expression replacement strings, to control case conversion: \u, \U, \l, \L, and \E. If any of these strings is present in a ColdFusion 5 application, insert a backslash before it (for example, change "\u" to "u").
Parameters
Parameter | Description |
string | A string or a variable that contains one. |
reg_expression | Regular expression to replace. For more information, see Using Regular Expressions in Functions in the Developing ColdFusion Applications. |
substring | A string or a variable that contains one. Replaces reg_expression. |
scope |
|
Usage
For details on using regular expressions, see Using Regular Expressions in Functions in the Developing ColdFusion Applications.
Example
<cfscript>
writeOutput(REReplace("CABARET","C|B","G","ALL") & "<br/>")
writeOutput(REReplace("CABARET","C|B","G","ALL") & "<br/>")
writeOutput(REReplace("CABARET","[A-Z]","G","ALL") & "<br/>")
writeOutput(REReplace("CABARET","[A-Z]","G","ALL") & "<br/>")
writeOutput(REReplace("I love jellies","jell(y|ies)","cookies") & "<br/>")
writeOutput(REReplace("I love jellies","jell(y|ies)","cookies") & "<br/>")
writeOutput(REReplace("I love jelly","jell(y|ies)","cookies") & "<br/>")
writeOutput(REReplace("I love jelly","jell(y|ies)","cookies") & "<br/>")
</cfscript>
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