
Contents > Developing ColdFusion MX Applications > Using Regular Expressions in Functions > About regular expressions > Using ColdFusion regular expression functions

Using ColdFusion regular expression functions

ColdFusion supplies four functions that work with regular expressions:

REFind and REFindNoCase use a regular expression to search a string for a pattern and return the string index where it finds the pattern. For example, the following function returns the index of the first instance of the string " BIG ":

<cfset IndexOfOccurrence=REFind(" BIG ", "Some BIG BIG string")>
<!--- The value of IndexOfOccurrence is 5 --->

To find the next occurrence of the string " BIG ", you must call the REFind function a second time. For an example of iterating over a search string to find all occurrences of the regular expression, see Returning matched subexpressions.

REReplace and REReplaceNoCase use regular expressions to search through a string and replace the string pattern that matches the regular expression with another string. You can use these functions to replace the first match, or to replace all matches.

For detailed descriptions of the ColdFusion functions that use regular expressions, see CFML Reference.


Contents > Developing ColdFusion MX Applications > Using Regular Expressions in Functions > About regular expressions > Using ColdFusion regular expression functions

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