One step closer to world domination
Matt Danger
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Homepage: http://mattdanger.net
Posts by Matt Danger
A few Mac OS X tweaks you might not have known about
Dec 15th
I’m a die hard Mac OS X user and also a lab administrator at a college. Over the years I’ve found several tweaks that help me configure both my personal computer and lab workstations to do different tasks.
Force the printer icon to auto quit after a print job completes. Right-click on the icon and select “Auto Quit” or do:
defaults write /Users/yourusername/Library/Preferences/com.apple.print.PrintingPrefs "Quit When Finished" -bool true
Disable disk checksum verification
defaults write com.apple.frameworks.diskimages skip-verify true
Gradient highlights for Stacks
defaults write com.apple.dock mouse-over-hilte-stack -boolean true
Add recent applications as a Stack on Dock
defaults write com.apple.dock persistent-others -array-add '{ "tile-data" = { "list-type" = 1; }; "tile-type" = "recents-tile"; }
Make extended print dialog show by default
defaults write -g PMPrintingExpandedStateForPrint -bool true
Change the current screenshot format
defaults write com.apple.screencapture type jpg
Disable iTunes store arrows
defaults write com.apple.iTunes show-store-arrow-links -bool false
Stop Safari “saved text” dialogs
defaults write com.apple.Safari DebugConfirmTossingUnsubmittedFormText NO
Force Safari to open all links in new tab
defaults write com.apple.Safari TargetedClicksCreateTabs -bool true
Disable application crash dialogs
defaults write com.apple.CrashReporter DialogType none
Make hidden Dock icons transparent
defaults write com.apple.Dock showhidden -bool true
Disable Dashboard
defaults write com.apple.dashboard mcx-disabled -boolean true
Stop disk image verification
defaults write com.apple.frameworks.diskimages skip-verify true
Enable Data Detectors in 10.5 iChat
defaults write com.apple.iChat EnableDataDetectors true
Modify Sheet Animation
defaults write NSGlobalDomain NSWindowResizeTime .001
Login window tweaks
The text underneath the “Mac OS X” title of the login window will change if you click on it. You can configure the login window to display any of these as default. Valid options are HostName, SystemVersion, SystemBuild, SerialNumber, IPAddress, DSStatus, or Time
defaults write /Library/Preferences/com.apple.loginwindow AdminHostInfo Time
You can add a message to the login window. This is useful in a lab environment when you need to give instructions to your users.
defaults read /Library/Preferences/com.apple.loginwindow LoginwindowText "Some custom message."
Simple Reg-Ex to Validate an Email Address
Nov 24th
Regular expressions can be a pain sometimes. Here’s a code snippet to make your life a little easier when validating email addresses:
$email = 'user@example.com'; if (!eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,3}$", $email)) { print_error("Your email address is invalid!"); }
Update Your Facebook Status from the Command Line
Nov 24th
The Facebook Developer Platform doesn’t give us the ability to set a user’s status so I decided to write my own method that would allow Facebook users to update their status messages without having to log into the website.
The first version that I wrote in 2006 was a little complicated. The script had to connect to several Facebook pages and collect cookies and challenge codes that were necessary to login and update the user’s status.
Facebook changed their login and status update mechanisms in version 2.0 breaking my original script. I’ve rewritten it to work with Facebook 2.0. It is now actually shorter because Facebook uses the user’s homepage as the central information area.
Any feedback is welcome. I plan to implement this in other utilities soon. Enjoy!
Updated on September 9, 2011 to version 2.2
#!/usr/bin/perl -w #=============================================================================== # # Facebook status script v2.2 # # This script allows you to update your Facebook status from the shell. # # Copyright (C) 2011 Matt West <matt at mattdanger dot net> # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # For a copy of the GNU General Public License visit <http://www.gnu.org/licenses/>. # #=============================================================================== # Be sure you have installed the LWP and Crypt::SSLeay packages from CPAN use LWP; use HTTP::Cookies; use Term::ReadKey; use strict; # General vars my $login; my $password; my $status; my $auth_key; my $fb_dtsg; my $response; my $user_agent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6"; my @header = ( 'Referer' => 'http://www.facebook.com/', 'User-Agent' => $user_agent); my $cookie_jar = HTTP::Cookies->new( file => 'cookies.dat', autosave => 1, ignore_discard => 1); my $browser = LWP::UserAgent->new; $browser->cookie_jar($cookie_jar); # Get login information & the status message to send. print "Facebook login name: "; $login = <>; chomp($login); print "Password: "; ReadMode('noecho'); $password = ReadLine(0); chomp($password); ReadMode 0; print "\nYour status (Facebook appears to have a 232 character limit): "; $status = <>; chomp($status); print "\nSending... "; #================================================ # Login and get auth key #================================================ $response = $browser->post('https://www.facebook.com/login.php?m=m&refsrc=http%3A%2F%2Fm.facebook.com%2Fhome.php&refid=8', ['email' => $login, 'pass' => $password, 'login' => 'Log In'], @header); $cookie_jar->extract_cookies( $response ); $cookie_jar->save; $response = $browser->get('http://m.facebook.com/home.php', @header); $auth_key = $response->content; $auth_key =~ s/\n//g; $auth_key =~ s/^.*name="post_form_id" value="//; $auth_key =~ s/".*$//; $fb_dtsg = $response->content; $fb_dtsg =~ s/\n//g; $fb_dtsg =~ s/^.*name="fb_dtsg" value="//; $fb_dtsg =~ s/".*$//; #================================================ # Submit the status update #================================================ @header = ('Referer' => 'http://m.facebook.com/a/home.php', 'User-Agent' => $user_agent, 'Host' => 'm.facebook.com'); $response = $browser->post('http://m.facebook.com/a/home.php?re974fcaf&refid=7&rbb94a931', ['fb_dtsg' => $fb_dtsg, 'post_form_id' => $auth_key, 'status' => $status, 'update' => 'Share'], @header); # Did we do good here? if ($response->content eq '') { print "Done!\n\n"; } else { print "An error occurred while setting your profile status.\n\n"; $response->content; } # Now that we're done we can delete the cookies.dat file. exec('rm cookies.dat');
Bash Examples
Nov 23rd
A while ago a friend was taking an entry level Unix programming class and asked me to help him study. I came up with some sample problems for him. Here are my solutions:
The first is a program that will allow a user to input as many numbers as the user wants (999 as the choice that ends the user input). The program will then output the highest number, the lowest number, the sum of all the numbers, and the average number.
#!/bin/bash COUNT=0 echo -n "Enter a number (999 to quit): " while read NUM; do # Set initials if [ $COUNT -eq 0 ]; then HIGHEST=$NUM LOWEST=$NUM SUM=$NUM fi # If 999 is entered, break out if [ $NUM -eq 999 ]; then break else # See if inputted number is the highest number if [ $NUM -gt $HIGHEST ]; then HIGHEST=$NUM fi # See if inputted number is the lowest number if [ $NUM -lt $LOWEST ]; then LOWEST=$NUM; fi # Calculate sum SUM=$(($SUM+$NUM)) echo -n "Enter another number (999 to quit): " fi COUNT=$(($COUNT+1)) done AVERAGE=$(($SUM/$COUNT)) echo "Highest number: $HIGHEST" echo "Lowest number: $LOWEST" echo "Sum of the numbers: $SUM" echo "Average of the numbers: $AVERAGE"
The second program is a number guessing game. The computer picks a number from 0-60 then allows the user to guess at the number until the user gets it right. The program gives the user a hint on whether they should guess a higher or lower number.
#!/bin/bash RAN=$((RANDOM%60)) COUNTER=1 echo -n "I've guessed a number between 0-60, what is it? " while read GUESS; do if [ $GUESS -eq $RAN ]; then break; else echo if [ $GUESS -lt $RAN ]; then echo -n "Nope, try a higher number: " else echo -n "Nope, try a lower number: " fi fi COUNTER=$((COUNTER+1)) done echo echo "Yep, good job! It took you $COUNTER tries to guess correctly."
The third program allows a user to type in a number, then the program will either count up to the number provided by the user or count down from that number. In addition, a menu lets the user choose which counter they wish to use. In both cases that counter will either count down to 0, or start counting from 0.
#!/bin/bash echo -n "Enter a number: "; read NUM echo -n "Enter U to count up to $NUM and D to count down to 0: "; read CHOICE case $CHOICE in 'u'|'U') COUNTER=0 while [ $COUNTER -le $NUM ]; do echo $COUNTER COUNTER=$(($COUNTER+1)) done ;; 'd'|'D') while [ $NUM -ge 0 ]; do echo $NUM; NUM=$(($NUM-1)) done ;; *) echo "Error: You entered an invalid argument." esac
The last program asks the user if they want to add, subtract, multiply or divide two user inputted numbers. Then the program outputs the sum of number 1 and number 2, the difference of number 1 and number 2, the product of number 1 and number 2, and the quotient of number 1 and number 2
This program will run until the user wants to quit. Also, if the user puts in a 0 as the second number, we let the user know that if they choose divide that a division by zero error will occur.
#!/bin/bash while true; do echo "Please enter two numbers (type 'q' to quit): " echo -n "Number 1: " read NUM1 if [ $NUM1 == "q" ]; then exit; fi echo -n "Number 2: " read NUM2 echo -n "Enter (a) to add, (s) to subtract, (m) to multiply, or (d) to divide these numbers: " read OPERATION case $OPERATION in a) echo "The sum of $NUM1 and $NUM2 is: $(($NUM1+$NUM2))" ;; s) echo "The difference of $NUM1 and $NUM2 is: $(($NUM1-$NUM2))";; m) echo "The product of $NUM1 and $NUM2 is: $(($NUM1*$NUM2))" ;; d) if [ $NUM2 -eq 0 ]; then echo "You can't divide by 0, a division by zero error will occur." else echo "The quotient of $NUM1 and $NUM2 is: $(($NUM1/$NUM2))" fi ;; esac done
PHP MySQL class example
Feb 27th
Here is an example of a PHP 4.2 MySQL connector class. It handles all basic database queries and input filtering and validation.
<?php /**************************************************** * * File: class.mysql.php * Author: Matt West, http://mattdanger.net * Date: February 22, 2007 * Purpose: MySQL Class * ****************************************************/ class MySQL_Connection { // Private variables var $handler; var $hostname; var $username; var $password; var $database; // Public variables var $result; var $num_rows; /** * Constructor: Construct the object. * @param string $hostname Hostname of MySQL server (Default: localhost) * @param string $username Your MySQL account username * @param string $password Your MySQL account password * @param string $database The MySQL database to connect to */ function MySQL_Connection($hostname, $username, $password, $database) { $this->hostname = $hostname; $this->username = $username; $this->password = $password; $this->database = $database; $this->connect(); $this->select_db(); } /** * Destructor: Clean up */ function __destruct() { $this->db_close(); } /** * throw_error(): Print an error message * @param string $message A descriptive error message that will print when invoked */ function throw_error($message, $line = 0){ $line = ( !empty($line) ) ? $line = ' on line ' . $line : '' ; die ('There was an error on line' . $line .' in class "' . __CLASS__ . '": ' . $message); } /** * connect(): Connect to MySQL */ function connect() { $this->handler = mysql_pconnect($this->hostname, $this->username, $this->password) or $this->throw_error(mysql_error(), __LINE__); } /** * select_db(): Select the MySQL database */ function select_db() { mysql_select_db($this->database, $this->handler) or $this->throw_error(mysql_error(), __LINE__); } /** * select(): Select a row or rows from the DB * @param string $table Table name * @param array $columns Either '*' or a list of columns to select * @param array $where column => value * @param array $order_by column1 => DESC, column2 => ASC * @param array $limit 1 or 30 or 0, 30 or 30, 60 (etc) * @param bool $debug Returns query string if true * @returns MySQL resource */ function select($table, $columns, $where = '', $order_by = '', $limit = '', $debug = 0) { if ( $table == '' || !sizeof($columns)) { return; } // Set up columns $tmp = ''; if ( $columns != '*' ) { if ( is_array($columns) ) { foreach($columns as $column) { $data .= '`' . $column . '`, '; } $columns = preg_replace( "/, $/" , "" , $data); } else { $columns = '`' . $columns . '`'; } } // Set up the WHERE if ( !empty($where) ) { $tmp = ''; foreach ($where as $key => $val) { $tmp .= '`' . $key . "` = '" . $this->escape_str($val) . "' AND "; } $where = ' WHERE ' . preg_replace( "/ AND $/" , "" , $tmp); } // Set up the ORDER BY $tmp = ''; if ( !empty($order_by) ) { if ( is_array($order_by) ) { foreach($order_by as $val => $order) { $tmp .= '`' . $val . '` ' . $order . ', '; } $order_by = ' ORDER BY ' . preg_replace( "/, $/" , "" , $tmp); } else { $order_by = ' ORDER BY ' . $order_by . ' DESC'; } } // Set up the LIMIT $tmp = ''; if ( !empty($limit) ) { if ( is_array($limit) ) { foreach ($limit as $num) { $tmp .= $num . ', '; } $limit = ' LIMIT ' . preg_replace( "/, $/" , "" , $tmp); } else { $limit = ' LIMIT ' . $limit; } } $query = 'SELECT ' . $columns . ' FROM `' . $table . '`' . $where . $order_by . $limit; // Return query string for debugging purposes or just do the query if ( $debug ) { return $query; } else { // Perform the query return $this->query($query); } } /** * insert(): Insert data into a table * @param string $table Table to insert into * @param array $data The column name & data * @param boolean $slashes True if you want to add 's to the string * @returns boolean True if successful, false if not. */ function insert($table, $data, $slashes = false) { if ( $table == '' || $data == '' ) { return; } $fields = ''; $values = ''; foreach($data as $key => $val) { $fields .= '`' . $key . '`, '; $val = ( $slashes == true ) ? addslashes($val) : $val; $values .= "'" . addslashes( stripslashes($val) ) . "'" . ', '; } $fields = preg_replace( "/, $/" , "" , $fields); $values = preg_replace( "/, $/" , "" , $values); mysql_query('INSERT INTO `' . $table . '` (' . $fields . ') VALUES (' . $values . ')', $this->handler) or $this->throw_error(mysql_error(), __LINE__); } /** * update(): Update data into a table * @param string $table Table to insert into * @param array $data The column name & data * @param boolean $slashes True if you want to add 's to the string * @returns boolean True if successful, false if not. */ function update($table, $data, $where, $slashes = false) { if ( $table == '' || $data == '' || $where == '') { return; } $string = ''; $tmp = ''; foreach($data as $key => $val) { $string .= '`' . $key . "` = '" . $this->escape_str($val) . "', "; } $string = preg_replace( "/, $/" , "" , $string); if ( is_array($where) ) { foreach ($where as $key => $val) { $tmp .= $key . " = '" . $this->escape_str($val) . "' AND "; } $where = preg_replace( "/AND $/" , "" , $tmp); } else { $where = $where; } mysql_query('UPDATE `' . $table . '` SET ' . $string . ' WHERE ' . $where, $this->handler) or $this->throw_error(mysql_error(), __LINE__); } /** * delete(): Delete a row from a table * @param string $table Table to insert into * @param array $data The column name & data */ function delete($table, $data) { if ( $table == '' || $data == '') { return; } mysql_query('DELETE FROM `' . $table . '` WHERE `' . key($data) . "` = '" . $data[key($data)] . "'", $this->handler) or $this->throw_error(mysql_error(), __LINE__); } /** * query(): Query from MySQL. * @param string $query The MySQL query * @returns MySQL resource * * Warning: This function is only ment to be called manually if being used in * a development environment because it does not do any input validation. */ function query($query) { if ( $query == '') { return; } $this->result = mysql_query($query, $this->handler) or $this->throw_error(mysql_error(), __LINE__); $this->num_rows = mysql_num_rows($this->result); if ($this->num_rows > 1) { $tmp_array = array(); while ($row = mysql_fetch_assoc($this->result)) { array_push($tmp_array, $row); } $this->result = $tmp_array; return $this->result; } else { $this->result = mysql_fetch_assoc($this->result); return $this->result; } } function escape_str($string) { if ( is_array($string) ) { foreach($string as $key => $val) { $str[$key] = $this->escape_str($val); } return $str; } if ( function_exists('mysql_escape_string') ) { return mysql_escape_string( stripslashes($string) ); } else { return addslashes( stripslashes($string) ); } } /** * close_connection(): Close connection to MySQL */ function db_close(){ mysql_close($this->handler); } } ?>
PHP 5 Email Class
Jan 25th
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
Jan 15th
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
Jan 12th
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; } } ?>
Newest LiveJournal Images
Nov 24th
This script displays the newest images posted by LiveJournal users. The script is pretty basic and simply parses a feed from LiveJournal.
You can view it in action here: http://mattdanger.net/lj/ (Warning: Some images may be NSFW!)
The code:
<?php $n = 5; // Maximum is 250 $referrer = 'http://example.com'; // Your site $email = 'user@example.com'; // Your email if ($fp = fsockopen('livejournal.com', 80)) { fputs($fp, "GET /stats/latest-img.bml HTTP/1.0rn" . "Host: www.livejournal.comrn" . "User-Agent: " . $referrer . "; " . $email . "rnrn"); $data = ''; while(!feof($fp)) { $data .= fgets($fp); } fclose($fp); preg_match_all("<recent-image img='([^']+)' url='([^']+)' />", $data, $out); for ($i = 0; $i < $n; $i++) { echo '<a href="' . $out[2][$i] . '"><img border="0" src="' . $out[1][$i] . '" /></a><br /><br />' . "n"; } } else { echo "Connecting to LiveJournal failed."; } ?>
As an aside, if you’re a LiveJournal user and don’t want your images posted to the public feed you can go to your command console and type “set latest_optout yes”.










