MailSender.php

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<?php

/**
	 * MailSender.php
	 *
	 **/

namespace Mad;

class MailSender{

protected $email;
		protected $headers;

protected $errors = array();

/**
		 * Constructor. Initialize properties
		 * @param Array $options - array of settings
		 * @return void;
		 **/
		public function __construct(Array $options){

if(isset($options['email'])) $this->email = $options['email'];
			else throw new \InvalidArgumentException("Email address should be specified.");

if(isset($options['headers']) && is_array($options['headers'])) $this->headers = $options['headers'];

}

/**
		 * Sends mail
		 * @param string $message
		 * @return boolean;
		 **/
		public function send($message = '', $subject = ''){

if(!is_array($this->email) && !$this->validateEmail($this->email)){

$this->addError('Email address "' . $this->email . '" is invalid.');
				return false;

}
			elseif(is_array($this->email)){

$valid_emails = true;

foreach($this->email as $email){

if(!$this->validateEmail($email)){

$this->addError('Email address "' . $email . '" is invalid.');
						$valid_emails = false;

}

if(!$valid_emails) return false;

}

$email = is_array($this->email) ? implode(', ', $this->email) : $this->email;
			$headers = $this->makeHeaders();
			$message = filter_var($message, FILTER_SANITIZE_STRING);
			$subject = filter_var($subject, FILTER_SANITIZE_STRING);

if(!mail($email, $subject, $message, $headers)){

$this->addError('Could not send a mail, sorry. Please try again.');
				return false;

}

return true;

}

/**
		 * Creates the mail headers
		 * @return string;
		 **/
		protected function makeHeaders(){

$headers = array();

if(!isset($this->headers)) return null;

foreach ($this->headers as $name => $value) {

$headers[] = $name . ': ' . filter_var($value, FILTER_SANITIZE_STRING);

}

return $headers ? implode("\r\n", $headers) : null;

}

/**
		 * Checks the correct email address
		 * @param string $email
		 * @return boolean;
		 **/
		protected function validateEmail($email){

return filter_var($email, FILTER_VALIDATE_EMAIL);

}

/**
		 * Adds new error
		 * @param string $message
		 * @return void;
		 **/
		protected function addError($message){

$this->errors[] = $message;

}

/**
		 * Returns list of errors
		 * @return string;
		 **/
		public function getErrorsList(){

return implode("\r\n", $this->errors);

}