Adding multiple email addresses to php email form

Question

I created a php email form for a contact us page to my site, and want to use the same form for multiple email addresses. However, when I copy the code to the new page and add a different email address, it goes to the same email address as the original contact form.

I change the

$email_to = 'example@gmail.com, customer@website.com';

to a different email address, but it won't work, and keeps sending to the original email address.

How can I make this form usable for multiple emails for multiple email forms?

<?php

// Set email variables
$email_to = 'SARAI.ROMEROEVANS@lausd.net, customer@website.com';
$email_subject = 'Contact Form Submission Bancroft Website';

// Set required fields
$required_fields = array('fullname','email','comment');

// set error messages
$error_messages = array(
    'fullname' => 'Please enter a Name to proceed.',
    'email' => 'Please enter a valid Email Address to continue.',
    'comment' => 'Please enter your Message to continue.'
);

// Set form status
$form_complete = FALSE;

// configure validation array
$validation = array();

// check form submittal
if(!empty($_POST)) {
    // Sanitise POST array
    foreach($_POST as $key => $value) $_POST[$key] = remove_email_injection(trim($value));

    // Loop into required fields and make sure they match our needs
    foreach($required_fields as $field) {       
        // the field has been submitted?
        if(!array_key_exists($field, $_POST)) array_push($validation, $field);

        // check there is information in the field?
        if($_POST[$field] == '') array_push($validation, $field);

        // validate the email address supplied
        if($field == 'email') if(!validate_email_address($_POST[$field])) array_push($validation, $field);
    }

    // basic validation result
    if(count($validation) == 0) {
        // Prepare our content string
        $email_content = 'New Website Comment: ' . "\n\n";

        // simple email content
        foreach($_POST as $key => $value) {
            if($key != 'submit') $email_content .= $key . ': ' . $value . "\n";
        }

        // if validation passed ok then send the email
        mail($email_to, $email_subject, $email_content);

        // Update form switch
        $form_complete = TRUE;
    }
}

function validate_email_address($email = FALSE) {
    return (preg_match('/^[^@\s]+@([-a-z0-9]+\.)+[a-z]{2,}$/i', $email))? TRUE : FALSE;
}

function remove_email_injection($field = FALSE) {
   return (str_ireplace(array("\r", "\n", "%0a", "%0d", "Content-Type:", "bcc:","to:","cc:"), '', $field));
}

?>

If you need more code, let me know

Answer 1

As far as I know you can't specify multiple email addresses in the first parameter of the mail() function. EDIT - you can, but I had assumed this wasn't possible as it has caused my problems in the past.

Here is an edited version of your code. I split $email_to up by commas and then loop through each email address to send an email to each.

I have also added some if statements to control who the recipients are. If you are going to re-use the code for multiple forms then pass a formID as a hidden field and then you can specify in the PHP who should receive the emails. No need to duplicate the PHP code for each form then ...

<?php

// Set email variables

if($_POST['formID'] == 1) {
    $email_to = 'SARAI.ROMEROEVANS@lausd.net, customer@website.com';
} elseif($_POST['formID'] == 2) {
    $email_to = 'test@test.com, customer@website.com';
} else {
    $email_to = 'blah@blah.com, customer@website.com';  
}

$email_subject = 'Contact Form Submission Bancroft Website';

// Set required fields
$required_fields = array('fullname','email','comment');

// set error messages
$error_messages = array(
    'fullname' => 'Please enter a Name to proceed.',
    'email' => 'Please enter a valid Email Address to continue.',
    'comment' => 'Please enter your Message to continue.'
);

// Set form status
$form_complete = FALSE;

// configure validation array
$validation = array();

// check form submittal
if(!empty($_POST)) {
    // Sanitise POST array
    foreach($_POST as $key => $value) $_POST[$key] = remove_email_injection(trim($value));

    // Loop into required fields and make sure they match our needs
    foreach($required_fields as $field) {       
        // the field has been submitted?
        if(!array_key_exists($field, $_POST)) array_push($validation, $field);

        // check there is information in the field?
        if($_POST[$field] == '') array_push($validation, $field);

        // validate the email address supplied
        if($field == 'email') if(!validate_email_address($_POST[$field])) array_push($validation, $field);
    }

    // basic validation result
    if(count($validation) == 0) {
        // Prepare our content string
        $email_content = 'New Website Comment: ' . "\n\n";

        // simple email content
        foreach($_POST as $key => $value) {
            if($key != 'submit') $email_content .= $key . ': ' . $value . "\n";
        }

        // if validation passed ok then send the email

        $email = explode(',', $email_to);

        foreach($email as $e) {
            $e = trim($e);
            mail($e, $email_subject, $email_content);
        }        

        // Update form switch
        $form_complete = TRUE;
    }
}

function validate_email_address($email = FALSE) {
    return (preg_match('/^[^@\s]+@([-a-z0-9]+\.)+[a-z]{2,}$/i', $email))? TRUE : FALSE;
}

function remove_email_injection($field = FALSE) {
   return (str_ireplace(array("\r", "\n", "%0a", "%0d", "Content-Type:", "bcc:","to:","cc:"), '', $field));
}

?>