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joomla load captcha plugin inside component

/**
1)Get recaptcha keys from http://www.google.com/recaptcha

2)Set these keys to recaptcha plugin and activate it if it's not.

3)Put below code where you want to show recaptcha
*/
//php code
JPluginHelper::importPlugin('captcha');
$dispatcher = JDispatcher::getInstance();
$dispatcher->trigger('onInit','dynamic_recaptcha_1');

//html code inside form tag
<div id="dynamic_recaptcha_1"></div>
//4)Put this code where you validating/processing the form

$post = JRequest::get('post');      
JPluginHelper::importPlugin('captcha');
$dispatcher = JDispatcher::getInstance();
$res = $dispatcher->trigger('onCheckAnswer',$post['recaptcha_response_field']);
if(!$res[0]){
    die('Invalid Captcha');
}
https://snipt.net/embed/5f22c929f93c3ccc77b26848573b32c2/
/raw/5f22c929f93c3ccc77b26848573b32c2/
5f22c929f93c3ccc77b26848573b32c2
php
PHP
23
2019-07-23T00:01:14
True
False
False
Oct 15, 2012 at 05:51 AM
/api/public/snipt/48574/
joomla-load-captcha-plugin-inside-component
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="x">/**</span> </span><span id="L-2"><a name="L-2"></a><span class="x">1)Get recaptcha keys from http://www.google.com/recaptcha</span> </span><span id="L-3"><a name="L-3"></a> </span><span id="L-4"><a name="L-4"></a><span class="x">2)Set these keys to recaptcha plugin and activate it if it&#39;s not.</span> </span><span id="L-5"><a name="L-5"></a> </span><span id="L-6"><a name="L-6"></a><span class="x">3)Put below code where you want to show recaptcha</span> </span><span id="L-7"><a name="L-7"></a><span class="x">*/</span> </span><span id="L-8"><a name="L-8"></a><span class="x">//php code</span> </span><span id="L-9"><a name="L-9"></a><span class="x">JPluginHelper::importPlugin(&#39;captcha&#39;);</span> </span><span id="L-10"><a name="L-10"></a><span class="x">$dispatcher = JDispatcher::getInstance();</span> </span><span id="L-11"><a name="L-11"></a><span class="x">$dispatcher-&gt;trigger(&#39;onInit&#39;,&#39;dynamic_recaptcha_1&#39;);</span> </span><span id="L-12"><a name="L-12"></a> </span><span id="L-13"><a name="L-13"></a><span class="x">//html code inside form tag</span> </span><span id="L-14"><a name="L-14"></a><span class="x">&lt;div id=&quot;dynamic_recaptcha_1&quot;&gt;&lt;/div&gt;</span> </span><span id="L-15"><a name="L-15"></a><span class="x">//4)Put this code where you validating/processing the form</span> </span><span id="L-16"><a name="L-16"></a> </span><span id="L-17"><a name="L-17"></a><span class="x">$post = JRequest::get(&#39;post&#39;); </span> </span><span id="L-18"><a name="L-18"></a><span class="x">JPluginHelper::importPlugin(&#39;captcha&#39;);</span> </span><span id="L-19"><a name="L-19"></a><span class="x">$dispatcher = JDispatcher::getInstance();</span> </span><span id="L-20"><a name="L-20"></a><span class="x">$res = $dispatcher-&gt;trigger(&#39;onCheckAnswer&#39;,$post[&#39;recaptcha_response_field&#39;]);</span> </span><span id="L-21"><a name="L-21"></a><span class="x">if(!$res[0]){</span> </span><span id="L-22"><a name="L-22"></a><span class="x"> die(&#39;Invalid Captcha&#39;);</span> </span><span id="L-23"><a name="L-23"></a><span class="x">}</span> </span></pre></div> </td></tr></table>
captcha, event, joomla, plugin