I use Ray's method of implementing a CAPTCHA in this way:
<!---create CAPTCHA--->
<cffunction name="makeRandomString" returntype="string" output="false">
<cfset var chars = "23456789ABCDEFGHJKMNPQRS">
<cfset var length = randRange(4,6)>
<cfset var result = "">
<cfset var i = "">
<cfset var char = "">
<cfscript>
for(i=1; i <= length; i++) {
char = mid(chars, randRange(1, len(chars)),1);
result&=char;
}
</cfscript>
<cfreturn result>
</cffunction>
<!--CAPTCHA form element--->
<span class="required">&##8727;</span>Enter Text Below
(case-sensitive):</label>
<input id="captcha" name="captcha" class="text" type="text"/>
<cfset captcha = makeRandomString()>
<cfset captchaHash = hash(captcha)>
<input type="hidden" name="captchaHash" value="#captchaHash#">
<cfimage action="captcha" width="300" height="55" text="#captcha#"
fonts="verdana,arial" >
How do I implement code to allow the user to refresh just the CAPTCHA image if
it cannot be clearly read?
Thanks in advance.
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