Sending email with multiple checkboxes using php - php

Question

In this code i can't able to print the echo statement how can i able to know whether this code is sending mail or not. I'm a web designer not developer. if the echo statement is working means i can undestand that the code is working properly.
if(isset($_REQUEST['email']))
{
echo "dfsdkf";
// EDIT THE 2 LINES BELOW AS REQUIRED
$email_to = "info#ltnts.com";
$email_subject = "Enquiry Details From ltnt.in";
$customer_name=$_REQUEST['fullname'];
$organisation=$_REQUEST['cmp_name'];
$phone_num=$_REQUEST['contact'];
$email=$_REQUEST['logo_emailid'];
$country=$_REQUEST['country'];
$state=$_REQUEST['state'];
$city=$_REQUEST['logo_city'];
$zipcode=$_REQUEST['logo_zipcode'];
$project_type=$_REQUEST['market_type'];
$website_url=$_REQUEST['logo_name'];
$website_purpose=$_REQUEST['business_desc'];
$website_keyword=$_REQUEST['web_keyword'];
$Competitors=$_REQUEST['targent_aud'];
$sample_websites=$_REQUEST['targent_aud1'];
$no_of_updation=$_REQUEST['updation'];
$required_pages=$_REQUEST['checkbox'];
$additional_page=$_REQUEST['addition_page'];
$other_details=$_REQUEST['other_d'];
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
$email_message .= "Customer Name: ".clean_string($customer_name)."\n";
$email_message .= "organisation: ".clean_string($organisation)."\n";
$email_message .= "phone_num: ".clean_string($phone_num)."\n";
$email_message .= "Email ID: ".clean_string($email)."\n";
$email_message .= "Country: ".clean_string($country)."\n";
$email_message .= "state: ".clean_string($state)."\n";
$email_message .= "city: ".clean_string($city)."\n";
$email_message .= "zipcode: ".clean_string($zipcode)."\n";
$email_message .= "project_type: ".clean_string($project_type)."\n";
$email_message .= "website_url: ".clean_string($website_url)."\n";
$email_message .= "website_purpose: ".clean_string($website_purpose)."\n";
$email_message .= "website_keyword ID: ".clean_string($website_keyword)."\n";
$email_message .= "Competitors: ".clean_string($Competitors)."\n";
$email_message .= "sample_websites: ".clean_string($sample_websites)."\n";
$email_message .= "no_of_updation: ".clean_string($no_of_updation)."\n";
//$email_message .= "required_pages: ".clean_string($required_pages)."\n";
$email_message .= "additional_page: ".clean_string($additional_page)."\n";
$email_message .= "other_details: ".clean_string($other_details)."\n";
$newsletter = $_POST['checkbox'];
if ($newsletter != 'Yes')
{
$newsletter = 'No';
}
$email_message .="Selected:".clean_string($newsletter)."\n";
// create email headers
$headers = 'From: '.$email."\r\n".
'Reply-To: '.$email_to."\r\n" .
'X-Mailer: PHP/' . phpversion();
#mail($email_to, $email_subject, $email_message, $headers);
}
else
{
echo "dfjdhfjshfjz";
}
?>
<input name="checkbox[] "type="checkbox" name="page_Home" value="Home" id="pageHome" onChange="toggleVisibility('home');" /><label for="pageHome"> Home</label><img id="home" src="images/icon-tick.png" style="visibility:hidden"/><br/>
<input name="checkbox[]" value="About_us" id="page_Aboutus" type="checkbox" onChange="toggleVisibility('aboutus');"><label for="page_Aboutus"> About Us</label><img id="aboutus" src="images/icon-tick.png" style="visibility:hidden" /><br/>
<input name="checkbox[]" value="Services" id="pageServices" type="checkbox" onChange="toggleVisibility('services');"><label for="pageServices"> Services</label><img id="services" src="images/icon-tick.png" style="visibility:hidden" /><br/>
<input name="checkbox[]" value="Products" id="pageProducts" type="checkbox" onChange="toggleVisibility('products');"><label for="pageProducts"> Products</label><img id="products" src="images/icon-tick.png" style="visibility:hidden"/><br/>
<input name="checkbox[]" value="Enquiry" id="pageEnquiry" type="checkbox" onChange="toggleVisibility('enquiry');"><label for="pageEnquiry"> Enquiry</label><img id="enquiry" src="images/icon-tick.png" style="visibility:hidden"/><br/>
<input name="checkbox[]" value="Contact_us" id="pageContact" type="checkbox" onChange="toggleVisibility('Contact');"><label for="pageContact">Contact Us</label><img id="Contact" src="images/icon-tick.png" style="visibility:hidden" /><br/>

Answer 1

First check if $_REQUEST['email'] is set and in order to know if code is sending mail or not
You can use error_get_last(), when mail() returns false.
With print_r(error_get_last()) you get proper error
mail() returns TRUE if the mail was successfully accepted for delivery, FALSE otherwise.
It is important to note that just because the mail was accepted for delivery, it does not mean the mail will reach the destination.
use #mail to suppress warnings
Use
if( #mail($email_to, $email_subject, $email_message, $headers) ) {
echo 'mail send';
} else {
print_r(error_get_last());
}