Saturday, May 18, 2019

PHP : Mega demo library by Vincy

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php : Algorithm for Pattern Searching

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PHP : How to add reCAPTCHA to your forms 

STEP 1:
Paste this in header,

<script src='https://www.google.com/recaptcha/api.js'></script>


STEP 2:
Paste this in the form where you want the widget to appear,

<div class="g-recaptcha" data-sitekey="_______________PUBLIC_KEY_______________"></div>


STEP 3:

EDIT: The code below is updated from the video so that you only need one page. With an if/else statement, you can check if the form has been submitted. If it has, the reCAPTCHA success or error message will appear. If not, the form will appear. 

<?php
// Checks if form has been submitted
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    function post_captcha($user_response) {
        $fields_string = '';
        $fields = array(
            'secret' => '_______________PRIVATE_KEY_______________',
            'response' => $user_response
        );
        foreach($fields as $key=>$value)
        $fields_string .= $key . '=' . $value . '&';
        $fields_string = rtrim($fields_string, '&');

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
        curl_setopt($ch, CURLOPT_POST, count($fields));
        curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);

        $result = curl_exec($ch);
        curl_close($ch);

        return json_decode($result, true);
    }

    // Call the function post_captcha
    $res = post_captcha($_POST['g-recaptcha-response']);

    if (!$res['success']) {
        // What happens when the CAPTCHA wasn't checked
        echo '<p>Please go back and make sure you check the security CAPTCHA box.</p><br>';
    } else {
        // If CAPTCHA is successfully completed...

        // Paste mail function or whatever else you want to happen here!
        echo '<br><p>CAPTCHA was completed successfully!</p><br>';
    }
} else { ?>
    
<!-- FORM GOES HERE -->
<form></form>

<?php } ?>








<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Recaptcha Demo</title>
<script src='https://www.google.com/recaptcha/api.js'></script>
</head>
<body> 

<?php
// Checks if form has been submitted
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    function post_captcha($user_response) {
        $fields_string = '';
        $fields = array(
            'secret' => '_______________PRIVATE_KEY_______________',
            'response' => $user_response
        );
        foreach($fields as $key=>$value)
        $fields_string .= $key . '=' . $value . '&';
        $fields_string = rtrim($fields_string, '&');

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
        curl_setopt($ch, CURLOPT_POST, count($fields));
        curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);

        $result = curl_exec($ch);
        curl_close($ch);

        return json_decode($result, true);
    }

    // Call the function post_captcha
    $res = post_captcha($_POST['g-recaptcha-response']);

    if (!$res['success']) {
        // What happens when the CAPTCHA wasn't checked
        echo '<p>Please go back and make sure you check the security CAPTCHA box.</p><br>';
    } else {
        // If CAPTCHA is successfully completed...

        // Paste mail function or whatever else you want to happen here!
        echo '<br><p>CAPTCHA was completed successfully!</p><br>';
    }
} else { ?>
    
    <!-- FORM GOES HERE -->
    <form action="recaptcha-v2.php" method="post">
        <label for="fname">First Name*</label><br>
        <input type="text" name="fname" id="fname" required autofocus><br><br>

        <label for="lname">Last Name*</label><br>
        <input type="text" name="lname" id="lname" required><br><br>

        <label for="email">Email Address*</label><br>
        <input type="email" name="email" id="email" required><br><br>

        <div class="g-recaptcha" data-sitekey="_______________PUBLIC_KEY_______________"></div>
        <br>
        <input type="submit" id="submit" value="Submit">
    </form>

<?php } ?>

</body>
</html>




https://www.makingspidersense.com/tutorials/tut-recaptcha.txt




https://www.makingspidersense.com/tutorials/recaptcha-v2.txt
















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Javascript Basics : Difference between require and imports in javascript.












It relates to JavaScript modules. JavaScript code can be broken down into modules (which you require), but each module can “export” different things. You use import to specify what you want to, well, import from a module.



So say you had an imaginary shapes module, that exports a Circle and a Rectangle class. If you did require shapes it would import everything from that module. Instead, you can use import to only, well, import specific items from a module. So if you only wanted the Circle, you could do. 












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