Archive for January, 2007
PHP 5 Email Class
by Matt Danger on Jan.25, 2007, under PHP
Here is an example class that you can use to send email to users. It includes a properly formatted email body meta information that should avoid most spam filters.
<?php /**************************************************** * * File: class.email.php * Purpose: Email Class * Author: Matt West, http://mattdanger.net * Date: January 25, 2007 * ****************************************************/ class Email { // Public variables public $recipient; public $sender; public $reply_to; public $subject; public $body; public $cc; public $bcc; public $headers; /** * Constructor: Read in $file. * @param string $to Recipient * @param array $from "Sender's Name" => "Sender's Email" * @param string $subject Email subject * @param string $body Email body */ public function __construct ($to, $from = array(), $subject, $body) { // Set receiver $this->receiver($to); // Set sender if ( !empty($from) ) { $this->sender = array( key($from) => $from[ key($from) ] ); } else { $this->sender = array( $_SERVER['SERVER_ADMIN'] => $_SERVER['SERVER_ADMIN'] . '@' . $_SERVER['SERVER_NAME'] ); } // Set subject $this->subject($subject); // Set body $this->body($body); } /** * receiver(): Set receiver of the email * @param array $send_to List of Names & Email addresses */ public function receiver ($send_to) { foreach ($send_to as $name => $email) { if ( $this->email_is_valid($email) ) { if ( !is_numeric($name) ) { $this->recipient = ucfirst($name) . ' <' . $email . '>'; } else { $this->recipient = $email; } $this->recipient .= ', '; } else { exit( $email . " is not a valid email address." ); } } $this->recipient = preg_replace('/, $/', '', $this->recipient); } /** * sender(): Set send of the email * @param array $sender Name & Email address */ public function sender ($sender) { if ( email_is_valid($sender[0]) ) { if ( !is_numeric( key($sender) ) ) { $this->sender = ucfirst( key($sender) ) . ' <' . $email . '>'; } else { $this->sender = $sender[0]; } } else { exit( $sender[0] . " is not a valid email address." ); } } /** * reply_to(): Set send of the email * @param array $reply_to Name & Email address */ public function reply_to ($reply_to) { if ( email_is_valid($reply_to[0]) ) { if ( !is_numeric( key($reply_to) ) ) { $this->reply_to = ucfirst( key($reply_to) ) . ' <' . $email . '>'; } else { $this->reply_to = $sender[ key($reply_to) ]; } } else { exit( $reply_to[0] . " is not a valid email address." ); } } /** * cc(): Set Cc of the email * @param array $cc List of Names & Email addresses */ public function cc ($cc) { foreach ($cc as $name => $email) { if ( email_is_valid($email) ) { if ( !is_numeric($name) ) { $this->cc = ucfirst($name) . ' <' . $email . '>'; } else { $this->cc = $email; } $this->cc .= ', '; } else { exit( $email . " is not a valid email address." ); } } $this->cc = preg_replace('/, $/', '', $this->to); } /** * bcc(): Set Bcc of the email * @param array $bcc List of Names & Email addresses */ public function bcc ($bcc) { foreach ($bcc as $name => $email) { if ( !is_numeric($name) ) { $this->bcc = ucfirst($name) . ' <' . $email . '>'; } else { $this->bcc = $email; } $this->bcc .= ', '; } $this->bcc = preg_replace('/, $/', '', $this->to); } /** * set_headers(): Set email headers */ public function set_headers () { $this->set_from(); $this->headers = "MIME-Version: 1.0rn" . "From: ". $this->sender . "rn" . "To: " . $this->recipient . "rn"; if ( !empty($this->reply_to) ) $this->headers .= "Reply-To: " . $this->reply_to . "rn"; if ( !empty($this->cc) ) $this->headers .= "Cc: " . $this->cc . "rn"; if ( !empty($this->bcc) ) $this->headers .= "Bcc: " . $this->bcc . "rn"; $this->headers .= "X-Priority: 1rn" . "X-Mailer: PHP/" . phpversion() . "rn" . "Content-type: text/html; charset=iso-8859-1rn"; } /** * subject(): Sets the subject of the email. * @param string $subject The subject message. */ public function subject ($subject) { // Strip any newlines $this->subject = str_replace('n', '', $subject); } /** * body(): Sets the body message of the email. * @param string $body The body message. */ public function body ($body) { $this->body = $body; } /** * send(): Send the email * @returns boolean True if successful, false if not. */ public function send () { if (mail ( $this->recipient, $this->subject, $this->body, $this->headers)) { return true; } else { return false; } } /** * email_is_valid(): Check whether email address is valid * @param string $email Email address to check * @returns boolean True if address is valid, false if not. */ private function email_is_valid ($email) { if (eregi("^[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3}$", $email)) { return true; } else { return false; } } } ?>
PHP Login Class
by Matt Danger on Jan.15, 2007, under PHP
Here is an example of a PHP 4.2 Login class that you can use when writing your own CMS.
<?php /**************************************************** * * File: class.login.php * Author: Matt West, 2007 * Purpose: Login class * *****************************************************/ class Login { // Public variables var $username; var $cookie; function Login() { } /** * login(): Authenticate the user's username & password * @param string $username User's username in the DB * @param string $password User's password in the DB * @param object $DB MySQL database class object * @param string $table Table to query from * @returns bool True if login successful, false if not */ function login ($username, $password, $DB, $table = 'users') { $this->username = $username; $DB->query("SELECT `username`, `salt`, `password` FROM `$table` WHERE `username` = '$username' LIMIT 1"); return ( $DB->result['password'] == sha1($DB->result['salt'] . $password) ) ? true : false ; } /** * login_admin(): Authenticate the an admin's username & password * @param string $username User's username in the DB * @param string $password User's password in the DB * @param object $DB MySQL database class object * @param string $table Table to query from * @returns bool True if login successful, false if not */ function login_admin ($username, $password, $DB, $table = 'users') { $this->username = $username; $DB->query("SELECT `username`, `salt`, `password`, `user_level` FROM `$table` WHERE `username` = '$username' LIMIT 1"); if ( ( $DB->result['password'] == sha1($DB->result['salt'] . $password) ) && ( $DB->result['user_level'] ) == '3') { return true; } else { return false; } } /** * set_cookie(): Set the user's cookie * @param string $cookie_name Name of the cookie * @param object $DB MySQL database class object * @param bool $remember Whether to set for 30 days or just this session * @param string $table Table to query from * @returns bool True if cookie was sent, false if not */ function set_cookie ($cookie_name, $DB, $remember = true, $table = 'users') { $expiration = ( $remember ) ? ( time() + (60 * 60 * 24 * 30) ) : null ; $DB->query("SELECT * FROM `$table` WHERE `username` = '" . $this->username . "' LIMIT 1"); return ( setcookie($cookie_name, base64_encode( $DB->result['username'] . ":" . $DB->result['id'] . ":" . $DB->result['user_level'] . ":" . $DB->result['first_name'] . ":" . $DB->result['last_name'] ), $expiration) ) ? true : false ; } /** * is_logged_in(): Check if user is currently logged in * @param string $cookie_name Name of the cookie * @returns bool True if cookie was sent, false if not */ function is_logged_in ($cookie_name) { $this->cookie = explode(':', base64_decode($_COOKIE[$cookie_name]) ); } /** * is_admin_logged_in(): Check if user is currently logged in * @param string $cookie_name Name of the cookie * @returns bool True if cookie was sent, false if not */ function is_admin_logged_in ($cookie_name) { if ( isset($_COOKIE[$cookie_name]) ) { $this->cookie = explode(':', base64_decode($_COOKIE[$cookie_name]) ); if ( $this->cookie[2] == 3 ) { return true; } else { return false; } } else { return false; } } /** * logout(): Clear the user's cookie * @param string $cookie_name Name of the cookie */ function logout ($cookie_name) { setcookie($cookie_name, ''); } } ?>
PHP photo resizing class example
by Matt Danger on Jan.12, 2007, under PHP
Here is an example of a PHP class that manages simple photo resizing and saving using the GD library.
<?php /**************************************************** * * Purpose: Photo Resizing Class * Author: Matt West, http://mattdanger.net * Date: January 12th, 2007 * ****************************************************/ class Photo { // Private variables private $orig_image; private $portrait_frame; // 1 = Landscape, 2 = Portrait private $image_size; private $src_width; private $src_height; private $src_image; private $dest_height; private $dest_width; private $dest_image; private $ratio; private $scale; // Public variables public $allowed_types = array('jpeg', 'jpg', 'png', 'gif'); /** * Constructor: Contruct the photo object * @param array $photo Array of photo data, usually $_FILES['photo_name'] */ public function __construct($photo) { $this->photo($photo); } /** * photo(): Create new image resource * @param string $photo Array of photo data */ public function photo($photo) { $this->orig_image = $photo; // Confirm photo is an allowed type; if ( !in_array(ereg_replace('image/', '', $this->orig_image['type']), $this->allowed_types) ) { exit("Photo type is '" . $this->orig_image['type'] . "' which is not allowed"); } // Get image X and Y values in order to determine photo framing $this->image_size = getimagesize($this->orig_image['tmp_name']); $this->src_width = $this->image_size[0]; $this->src_height = $this->image_size[1]; $this->dest_height = 0; // 1 = Landscape, 2 = Portrait $this->photo_framing = ($this->src_width > $this->src_height) ? 1 : 2 ; // Calculate the ratio at which to resize based on the dimentions $this->ratio = $this->src_width / $this->src_height; } /** * scale_to_width(): Sets the width of the resize value * @param int $width Width in pixels * @returns boolean Returns true if successful, false if it was not. */ public function scale_to_width($width) { // Set the destination width value $this->dest_width = $width; // Calculate the value at which to scale the image $this->scale = ($this->ratio) ? $this->dest_width / $this->src_width : $this->dest_height / $this->src_height; if ($this->scale_image()) { return true; } else { return false; } } /** * scale_to_height(): Sets the height of the resize value * @param int $height Height in pixels * @returns boolean Returns true if successful, false if it was not. */ public function scale_to_height($height) { // Set the destination height value $this->dest_height = $height; // Calculate the ratio at which to resize based on the dimentions $this->ratio = $this->src_width / $this->src_height; // Calculate the value at which to scale the image $this->scale = ($this->ratio) ? $this->dest_height / $this->src_height : $this->dest_width / $this->src_width ; if ($this->scale_image()) { return true; } else { return false; } } /** * scale_image(): Resize image proportionally * @returns boolean Returns true if successful, false if it was not. */ private function scale_image () { if ($this->scale > 1) { exit ("The scale width supplied is larger than the original image. Please try a smaller number."); } $this->dest_width = $this->src_width * $this->scale; $this->dest_height = $this->src_height * $this->scale; if ( $this->dest_width >= $this->src_width && $this->dest_width >= $this->src_width ) $this->scale = 1; $this->src_image = imagecreatefromjpeg ($this->orig_image['tmp_name']); $this->dest_image = imagecreatetruecolor ($this->src_width * $this->scale, $this->src_height * $this->scale); if ( imagecopyresampled( $this->dest_image, $this->src_image, 0, 0, 0, 0, $this->dest_width, $this->dest_height, $this->src_width, $this->src_height) ) { return true; } else { return false; } } /** * save_photo(): Saves the resized photo * @param string $filename The path and filename to save the file (ex: "/path/to/image.jpg") * @param int $compression A number from 1-100 representing the level of compression. 100 is the least compression. * @returns boolean Returns true if save was successful, false if it was not. */ public function save_photo ($filename, $compression = 80) { if ( imagejpeg($this->dest_image, $filename, $compression) ) { $return_value = true; } else { $return_value = false; } imagedestroy($this->src_image); imagedestroy($this->dest_image); return $return_value; } } ?>
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Well hello there..
I'm Matt (Danger) West, developer, hacker, admin, security researcher, writer, photographer, and usability geek. I've been around the scene since 1998 and running this space since 2005. You can find out more about me, what I read, where I hang out, and what I'm interested in by reading some of my articles and postings.
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