Class used to generate captcha images. More...

Public Member Functions
	__construct ($name, $opts=null)
	Constructs a captcha instance.
	check ()
	Cheks if the user inputs the right captcha code.
	render ($opts=null)
	Renders the captcha image and input.
Private Member Functions
	generateStrings ()
	Generates a random alphanumeric string.
	hex2RGB ($hexStr)
	Converts a hex color string in a rgb array.
Private Attributes
	$_allow_numbers
	whether to allow number in captcha or not
	$_font_file
	absolute path of the font ttf file
	$_height
	captcha image height
	$_letters
	letters allowed for the captcha
	$_name
	name of the captcha field
	$_numbers
	numbers allowed for the captcha
	$_width
	captcha image width

Detailed Description

Class used to generate captcha images.

Definition at line 21 of file captcha.class.php.

Constructor & Destructor Documentation

Constructs a captcha instance.

Parameters:

string	$name	the name of the captcha field
array	$opts	Associative array of options allow_numbers: bool default false. Whether to allow number in captcha or not

Definition at line 67 of file captcha.class.php.

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captcha::check ( )

Cheks if the user inputs the right captcha code.

Definition at line 205 of file captcha.class.php.

captcha::generateStrings ( ) [private]

Generates a random alphanumeric string.

Definition at line 147 of file captcha.class.php.

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captcha::hex2RGB ( $ hexStr ) [private]

Converts a hex color string in a rgb array.

Parameters:

string $hexStr the hex string

Definition at line 176 of file captcha.class.php.

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captcha::render ( $ opts = null )

Renders the captcha image and input.

Parameters:

mixed

$opts

Associative array of options

bkg_color: string default '#00ff00'. The hex code of the background color of the captcha
color: string default '#000000'. The hex code of the color of the letters in the captcha image