How to install captcha on a website
Posted: Mon Jan 27, 2025 10:18 am
Captcha for a website can be written independently, but this requires knowledge of the scripting programming language PHP and JavaScript.
Ready captcha also requires programming skills for installation. A popular service is Google. Previously, Yandex. Clean Web was popular, but it ceased to exist.
To set a Google captcha for a website, two keys are required. One is needed to place the widget in the interface, and the second is to check the correctness of the result on the server. The direct moving leads email list second key requires a Google account.
The next step is to click on the We log in, and the reCAPTCHA panel opens with a registration block for the site. We enter the data, after which a page with keys and a script opens.
How to install captcha on a website
The script is copied and pasted into the site code, or more precisely, into the head block. After that, you can paste the block with the captcha into the place you selected in advance. These actions relate to the server side of the web resource.
As for the html document, that is, the client part, the captcha for the php site is installed in two stages. The first stage is adding the reCAPTCHA code to the js page. The second stage is adding the class "g-recaptcha" to the div block. The value of the class attribute is the public key obtained in advance.
What will the final code look like?
The php script is changed by making a number of edits to the process.php file:
assign the contents of the secret key to a new variable;
connect the client library autoload.php;
check the POST array for the presence of the g-recaptcha-response key;
create an object of the recaptcha class using the secret key;
we perform the required actions if the result is positive;
We send a message to the user if the result is incorrect.
Ready captcha also requires programming skills for installation. A popular service is Google. Previously, Yandex. Clean Web was popular, but it ceased to exist.
To set a Google captcha for a website, two keys are required. One is needed to place the widget in the interface, and the second is to check the correctness of the result on the server. The direct moving leads email list second key requires a Google account.
The next step is to click on the We log in, and the reCAPTCHA panel opens with a registration block for the site. We enter the data, after which a page with keys and a script opens.
How to install captcha on a website
The script is copied and pasted into the site code, or more precisely, into the head block. After that, you can paste the block with the captcha into the place you selected in advance. These actions relate to the server side of the web resource.
As for the html document, that is, the client part, the captcha for the php site is installed in two stages. The first stage is adding the reCAPTCHA code to the js page. The second stage is adding the class "g-recaptcha" to the div block. The value of the class attribute is the public key obtained in advance.
What will the final code look like?
The php script is changed by making a number of edits to the process.php file:
assign the contents of the secret key to a new variable;
connect the client library autoload.php;
check the POST array for the presence of the g-recaptcha-response key;
create an object of the recaptcha class using the secret key;
we perform the required actions if the result is positive;
We send a message to the user if the result is incorrect.