Are there alternative methods to reCaptcha for preventing spam in PHP websites?

One alternative method to reCaptcha for preventing spam in PHP websites is implementing a honeypot technique. This involves adding a hidden field to the form that only bots would fill out, as humans wouldn't see it. If the hidden field is filled, the submission can be flagged as spam. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if (!empty($_POST['honeypot_field'])) {
        // This submission is likely spam
        // Handle accordingly, such as logging the attempt or blocking the IP
    } else {
        // Process the form submission as normal
    }
}
?>
```

In the HTML form, add a hidden field like this:

```html
<input type="hidden" name="honeypot_field" value="">

Keywords

reCaptcha spam prevention PHP websites alternative methods libraries

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