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• CaptchaAction

PHP Class yii\captcha\CaptchaAction

CaptchaAction is used together with Captcha and CaptchaValidator to provide the CAPTCHA feature. By configuring the properties of CaptchaAction, you may customize the appearance of the generated CAPTCHA images, such as the font color, the background color, etc. Note that CaptchaAction requires either GD2 extension or ImageMagick PHP extension. Using CAPTCHA involves the following steps: 1. Override [[\yii\web\Controller::actions()]] and register an action of class CaptchaAction with ID 'captcha' 2. In the form model, declare an attribute to store user-entered verification code, and declare the attribute to be validated by the 'captcha' validator. 3. In the controller view, insert a Captcha widget in the form. Afficher le fichier Open project: yiisoft/yii2 Class Usage Examples

Méthodes publiques

Свойство	Type	Description
$backColor		the background color. For example, 0x55FF00. Defaults to 0xFFFFFF, meaning white color.
$fixedVerifyCode		the fixed verification code. When this property is set, CaptchaAction::getVerifyCode will always return the value of this property. This is mainly used in automated tests where we want to be able to reproduce the same verification code each time we run the tests. If not set, it means the verification code will be randomly generated.
$fontFile		the TrueType font file. This can be either a file path or path alias.
$foreColor		the font color. For example, 0x55FF00. Defaults to 0x2040A0 (blue color).
$height		the height of the generated CAPTCHA image. Defaults to 50.
$imageLibrary		the rendering library to use. Currently supported only 'gd' and 'imagick'. If not set, library will be determined automatically.
$maxLength		the maximum length for randomly generated word. Defaults to 7.
$minLength		the minimum length for randomly generated word. Defaults to 6.
$offset		the offset between characters. Defaults to -2. You can adjust this property in order to decrease or increase the readability of the captcha.
$padding		padding around the text. Defaults to 2.
$testLimit		how many times should the same CAPTCHA be displayed. Defaults to 3. A value less than or equal to 0 means the test is unlimited (available since version 1.1.2).
$transparent		whether to use transparent background. Defaults to false.
$width		the width of the generated CAPTCHA image. Defaults to 120.

Méthodes publiques

Méthode	Description
generateValidationHash ( string $code ) : string	Generates a hash code that can be used for client-side validation.
getVerifyCode ( boolean $regenerate = false ) : string	Gets the verification code.
init ( )	Initializes the action.
run ( )	Runs the action.
validate ( string $input, boolean $caseSensitive ) : boolean	Validates the input to see if it matches the generated code.

Méthodes protégées

Méthode	Description
generateVerifyCode ( ) : string	Generates a new verification code.
getSessionKey ( ) : string	Returns the session variable name used to store verification code.
renderImage ( string $code ) : string	Renders the CAPTCHA image.
renderImageByGD ( string $code ) : string	Renders the CAPTCHA image based on the code using GD library.
renderImageByImagick ( string $code ) : string	Renders the CAPTCHA image based on the code using ImageMagick library.
setHttpHeaders ( )	Sets the HTTP headers needed by image response.

Method Details

Property Details