C:/usr/local/lib/php/blueshoes-4.2/core/html/form/Bs_FormFieldCheckbox.class.phpandrej arnexample tag:<input type="checkbox" name="fieldname" value="value" checked> do you want to click here?what's special about this tag?- checked => if we have a value = 1, this means checked. 0 means not checked.- text => usually there is some additional text, like "do you want to receive the freenewsletter?"no dependencies here.CHECKBOX Form Field Class4.0.$id$blueshoes.org$this$this(int or string)if the description should be returned also. default is TRUE.default is TRUE. adds the enforce checkbox automatically, if needed. see (parent::)addEnforceCheckbox().some html codeoverwrites parent method.Return some html code to display the field on a website in a form.if a click on this text should toggle the checkbox. default is FALSE.the text, maybe with html if $clickable.returns the description text for the checkbox.$this$thisif we should 'highlight' the access key in the returned caption. default = TRUE.(default is null. if not given then the lang setting of the form is used.)if the caption should be clickable to toggle the checkbox value. default is FALSE.the caption for this field.overwrites/uses parent method.Return the caption string (for the current language).(not given = use the $valueDisplay of this field.)(not given = use the lang of this form.)in the default or given language.returns a human-readable representation of [a|the] value of this field(only used internally!!!)overwrites parent method. read manual there. additional information:the order for data validation is: (-- means check omitted here)1) must 5) --mustStartWith 9) --mustContain 13) --bsDataType/bsDataInfo2) --onlyOneOf 6) --notStartWith 10) --notContain 14) --regularExpression3) --minLength 7) --mustEndWith 11) --equalTo 15) --mustBeUnique4) --maxLength 8) --notEndWith 12) --notEqualToso 'must' is the only thing we really use here. you may say it's not of any use also,but think of the checkbox "do you agree to the terms and conditions" which is just thereto be clicked.validate the user inputs according to the object vars.<input type="checkbox" name="fieldname" value="value" checked> do you want to click here?usually a string, can be a hash because it's language dependant.additional text as in4.0.$x$bs_formfield&getelementgetfieldaddenforcecheckboxisexplodablegetadvancedstylegetadvancedstylehelpersetexplodegetlabelinputmanipulatevalidatemustvalidateonlyoneofvalidateonlyifvalidateminlengthvalidatemaxlengthvalidatemuststartwithvalidatenotstartwithvalidatemustendwithvalidatenotendwithvalidatemustcontainvalidatenotcontainvalidateequaltovalidatenotequaltovalidatedatatypevalidateregularexpressionvalidateadditionalcheckvalidatemustbeuniquegetvisibilitygetonenterbehaviorgetonentercodeapplyonenterbehaviorshouldpersistgetdbdatatypegetdbfieldname_getmaxlength_gettagstringeventsgetvalue_gettagstringvalue_gettagstringstyles_gettagstringadditionaltagsgetcaptionforformoutputgeterrorgethelp_highlightaccesskey_getaccesskeygetfieldashidden_getfieldnameforhtmlhasjavascriptismust_anyifcase_markasused_getbsdatainfonumberisfilledin_evalwrapunpersisttriggergeterrormessage&serializeunserialize&encrypt&decryptinitfrompostbs_formelementhasformobjectsetformobjectgetelementgetlevel_doelementstringformat_getparamvaluegetlanguagedependentvalueisexisexceptiontostringtohtmlpersistunpersistbs_objectbbsetoutputbbawakebbisawakebbxmsgbbxfunctionstartbbxfunctionendbbxechobbxvarbbxvardumpbbforcetracebbbufferstartbbbuffergetbbbufferendflushbbbufferendclean$_bs_string$_bs_array$_bs_htmlutil$_bs_date$fieldtype$caption$defaulterrormessage$errormessage$errortype$level$editability$accessrights$visibility$isused$valuedefault$valuedefaulttype$valuereceived$valuedisplay$valueinternal$savetodb$dbfieldname$dbdatatype$dbnotnull$dbprimarykey$dbkey$dbindexfulltext$dbautoincrement$dbunique$dbforeignkey$dbattributes$explodeeval$_explodearray$direction$styles$advancedstyles$events$onenter$additionaltags$bsdatatype$bsdatainfo$bsdatamanipulation$bsdatamanipvar$enforce$_must$must$mustif$mustoneof$mustoneofif$onlyoneof$onlyif$onlyoneofif$minlength$maxlength$muststartwith$notstartwith$mustendwith$notendwith$mustcontain$notcontain$equalto$notequalto$mustbeunique$regularexpression$additionalcheck$trim$remove$removei$replace$replacei$case$codepostreceive$codepostload$charsrule$persister$persisterid$_form$name$elementtype$formid$container$orderid$elementstringformat$persistervarsettingsbs_formfield_versionbs_ff_errorbs_formelement_versionbs_object_versionBs_FormFieldBs_FormElementBs_ObjectBs_Object