September 10, 2013
how to get php variable in javascript
User2746093’s Question:
I want to get value of $security_code which is in captchaCode.php file, in captcha.php file through javascript.I can not include this file in captcha.php file . Here is the code of Captcha_code.php and this code not comes inside any function of this file:
$captcha = new CaptchaCode();
$security_code = str_encrypt($captcha->generateCode(6));
And here is my javascript function, through this function i want to get the value of $security:
function refresh_captcha()
{
var img = document.getElementById('captcha_img');
img.src = '<?php echo "/captcha_images.php"?>';
jQuery("#captcha_img").attr("src",img.src);
jQuery("#security_code").val("<?php echo $security_code;?>");
}
Actually this code is for getting new encrypted value when captcha is refreshed without refreshing the page.
Send an ajax request to a page to output only the code like:
File: outputcode.php (demo only)
$captcha = new CaptchaCode();
$security_code = str_encrypt($captcha->generateCode(6));
echo $security_code;
exit;
Next, grab that value using AJAX, like for example in jQuery
$("#refresh_code").on('click', function() {
$.get("outputcode.php", function(data) {
//data will now hold the new code
});
});
Hope this gives you an idea.
