CI Framework Verification Code CAPTCHA helper function Usage Instance _php instance

This paper describes the use of CI Framework Verification Code CAPTCHA auxiliary function, and share it for everyone's reference. Specific as follows:

Using the Captcha helper function is convenient to generate verification code, but the picture is stored in the folder, not the output stream, the feeling is not perfect, can be used.

Description: Generates a 4-bit random number, and the Captcha folder is established under the CI root directory.
Copy the Code code as follows: <?php
$this->load->helper (' captcha ');
$vals = Array (
' word ' = rand (1000, 10000),
' Img_path ' = './captcha/',
' Img_url ' = ' http://localhost/ci/captcha/',
' Font_path ' = './path/to/fonts/texb.ttf ',
' img_width ' = ' 150 ',
' Img_height ' = 30,
' Expiration ' = 7200
);
$cap = Create_captcha ($vals);
echo $cap [' image '];
?>

The results of the operation are as follows:

It is hoped that this article will be helpful to the CI framework design of everyone.

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