toesslab - CaptCha

Creates an image with a randomly created simple arithmetic operation as Captcha.

Requires PHP version 7.x

Possible options:

• int $maxLow: The lowest randomly possible number
• int $maxHigh: The lowest randomly possible number
• array $availableOperators: Addition, Subtraction, Multiplication & Division are supported
• string $fontFile: Absolute path to a .ttf font file

Usage:

$captcha = new \CaptchaCalc\CaptchaCalc(3, 15, ['+', '-', '*', '/'], 'absolute/path/to/fontfile.ttf');
$img = $captcha->generateImage();
echo '<img src="$img">';
// Result (Don't show in production environment):
$captcha->calculateResult();