Redirection with header
This script shows how to redirect to a specific site.
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Category Archives: Snippets
Calculate Central European Summer Time (CEST)
Countries of the European Union add an hour to the time during summer to better seize sunlight, so for several months GMT 0 becomes GMT +1, GMT+1 becomes GMT-2 and so on. This is known as Central European Summer Time (CEST). This script takes a Unix timestamp and adds an hour to it (3600 seconds) if we are in this summer period.
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Zodiac Signs
Updated from the "Zodiac Signs" function already posted here. The other function had some overlapping month/day areas that would determine some birthdate/sign combinations incorrectly. (ie: 10/27 as Libra instead of Scorpio.)
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OddEven Class
Allows you to easily keep track of a series of items as either odd or even. Each time you check (using the "which" method) the counter increments so that the next time you check the state will have changed. This is the perfect class for using when you're outputting an HTML table and want to use different classes to differentiate between odd and even rows. Simply create a new instance and call OddEven->which() for each row!
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File size of a string
Using a string of text, find out how many kilobytes or bytes the string would and/or will take up in a file if it gets saved.
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PHP script for sending RSS feed to Twitter
I found a small sample PHP script for sending your RSS feed to Twitter. You can view / copy the code here:
<?php
/*
* Script that posts multiple RSS feeds to twitter
*
* Use this with crontab (it works with CLI too)
* to post your feed’s content to twitter
*
*/
$settings [‘twitter-username’] = ‘USERNAME’;// put here the twitter username you want to auto feed
$settings [‘twitter-password’] = ‘PASSWORD’;// the twitter password that belongs to the username
$settings [‘feed-url’] =‘FEED’;// here you place the url of the RSS feed you want to post to twitter
set_time_limit(0);//We need this because otherwise php will probably time out
//Let’s see if we have the curl library
if (!extension_loaded(‘curl’) && !dl(‘curl.’ . (stristr(php_OS, ‘WIN’)?‘dll’:‘so’))) die( ‘Curl is not loaded’ );
//Now we need a file to log the last entry so we wont post it again
$file = dirname(__FILE__) . ‘/feed.log.txt’;
if ( !file_exists( $file ) ){
$fp = @fopen( $file, ‘w’);
if (! $fp )
die( ‘Could not write to log file. Check your permissions.’ );
fclose( $fp );
} else
if ( !is_writable( $file ) ) die( ‘Could not write to log file. Check your permissions.’ );
//Fetch the RSS feed
$ch = curl_init( $settings[‘feed-url’] );
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$feed = simplexml_load_string ( curl_exec($ch) );
curl_close($ch);
//Parse the feed
$messages = array();//Here we will store all the messages that we are going to post to twitter
foreach( $feed->channel->item as $item ){
$title = $item->title; // If you want to fetch the description instead use $item->description
$url = $item->link;
//Have we already posted that?
if ( $url == file_get_contents($file) ) break;
//Now do the actual posting.
//First we need to shorten the url
$ch = curl_init( ‘http://twt.gs/?url=’.$url.‘&user=’.$settings[‘twitter-username’].‘&pass=’.$settings[‘twitter-password’] );
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$shortURL = curl_exec($ch);
$resp = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ( $resp != ‘200’ )
die(‘Problem with the url shortening service. Check back later. Error: ‘.$shortURL);
//Now Calculate the twit message
$cnt = 140 – strlen($shortURL) – 1;
$messages [] = strlen($title) <= $cnt ? $title . ‘ ‘ . $shortURL : substr($title,0,$cnt–3).‘… ‘.$shortURL;
$lastURL = empty($lastURL) ? $url : $lastURL;
}
//Post to twitter
while( $message = array_pop($messages) ){
$ch = curl_init(‘http://twitter.com/statuses/update.xml’);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, ‘status=’.urlencode($message));
curl_setopt($ch, CURLOPT_USERPWD, $settings[‘twitter-username’].‘:’.$settings[‘twitter-password’]);
$response = curl_exec($ch);
$resp = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ( $resp != ‘200’ )
die(‘Problem with twitter. We should try later. Twitter reported: ‘.$response);
else
sleep(5);//Sleep 5 seconds before the next update
}
$fp = fopen($file, ‘w’);
fwrite($fp, $lastURL);
fclose($fp);
?>
What the above script is missing is the auto starting. You can use an external cronjob service if your hosting provider does not give you access to CRONjobs.
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Get Favicon image using PHP
Some websites use a small Favicon as a logo for their website. In some cases it would be nice if you are able to get this small image (icon) and use it for your PHP output. For example when you have a link to this site or when you are showing the RSS feed from this site.
I found 2 different scripts for getting the favicon from external websites using PHP scripting. Here are the scripts.
function getFavicon($url) {
$HTTPRequest = @fopen($url, 'r');
if ($HTTPRequest) {
stream_set_timeout($HTTPRequest, 0.1);
$html = fread($HTTPRequest, 4096);
$HTTPRequestData = stream_get_meta_data($HTTPRequest);
fclose($HTTPRequest);
if (!$HTTPRequestData['timed_out']) {
if (preg_match('/<link[^>]+rel="(?:shortcut )?icon"[^>]+?href="([^"]+?)"/si', $html, $matches)) {
$linkUrl = html_entity_decode($matches[1]);
if (substr($linkUrl, 0, 1) == '/') {
$urlParts = parse_url($url);
$faviconURL = $urlParts['scheme'].'://'.$urlParts['host'].$linkUrl;
} elseif (substr($linkUrl, 0, 7) == 'http://') {
$faviconURL = $linkUrl;
} elseif (substr($url, -1, 1) == '/') {
$faviconURL = $url.$linkUrl;
} else {
$faviconURL = $url.'/'.$linkUrl;
}
} else {
$urlParts = parse_url($url);
$faviconURL = $urlParts['scheme'].'://'.$urlParts['host'].'/favicon.ico';
}
$HTTPRequest = @fopen($faviconURL, 'r');
if ($HTTPRequest) {
stream_set_timeout($HTTPRequest, 0.1);
$favicon = fread($HTTPRequest, 8192);
$HTTPRequestData = stream_get_meta_data($HTTPRequest);
fclose($HTTPRequest);
if (!$HTTPRequestData['timed_out'] && strlen($favicon) < 8192) {
return $faviconURL;
}
}
}
}
return false;
}
And the other PHP script I found is:
<?php
################################################################################
#
# Favicon Class (work with favicons), ver. 1.0, June, 2006.
#
# (c) 2006 ControlStyle Company. All rights reserved.
# Developped by Nikolay I. Yarovoy, Dmitry V. Domojilov.
#
# http://www.controlstyle.com
# info@controlstyle.com
#
################################################################################
class favicon
{
var $ver = '1.1';
var $site_url = ''; # url of site
var $if_modified_since = 0; # cache
var $is_not_modified = false;
var $ico_type = 'ico'; # ico, gif or png only
var $ico_url = ''; # full uri to favicon
var $ico_exists = 'not checked'; # no comments
var $ico_data = ''; # ico binary data
var $output_data = ''; # output image binary data
# main proc
function favicon($site_url, $if_modified_since = 0)
{
$site_url = trim(str_replace('http://', '', trim($site_url)), '/');
$site_url = explode('/', $site_url);
$site_url = 'http://' . $site_url[0] . '/';
$this->site_url = $site_url;
$this->if_modified_since = $if_modified_since;
$this->get_ico_url();
$this->is_ico_exists();
$this->get_ico_data();
}
# get uri of favicon
function get_ico_url()
{
if ($this->ico_url == '')
{
$this->ico_url = $this->site_url . 'favicon.ico';
# get html of page
$h = @fopen($this->site_url, 'r');
if ($h)
{
$html = '';
while (!feof($h) and !preg_match('/<([s]*)body([^>]*)>/i', $html))
{
$html .= fread($h, 200);
}
fclose($h);
# search need <link> tag
if (preg_match('/<([^>]*)link([^>]*)(rel="icon"|rel="shortcut icon")([^>]*)>/iU', $html, $out))
{
$link_tag = $out[0];
if (preg_match('/href([s]*)=([s]*)"([^"]*)"/iU', $link_tag, $out))
{
$this->ico_type = (!(strpos($link_tag, 'png')===false)) ? 'png' : 'ico';
$ico_href = trim($out[3]);
if (strpos($ico_href, 'http://')===false)
{
$ico_href = rtrim($this->site_url, '/') . '/' . ltrim($ico_href, '/');
}
$this->ico_url = $ico_href;
}
}
}
}
return $this->ico_url;
}
# check that favicon is exists
function is_ico_exists()
{
if ($this->ico_exists=='not checked')
{
$h = @fopen($this->ico_url, 'r');
$this->ico_exists = ($h) ? true : false;
if ($h) fclose($h);
}
return $this->ico_exists;
}
# get ico data
function get_ico_data()
{
if ($this->ico_data=='' && $this->ico_url!=''
&& $this->ico_exists && !$this->is_not_modified)
{
# get ico data
$ico_z = parse_url($this->ico_url);
$ico_path = $ico_z['path'];
$ico_host = $ico_z['host'];
$ico_ims = gmdate('D, d M Y H:i:s', $this->if_modified_since) . ' GMT';
$fp = @fsockopen($ico_host, 80);
if ($fp)
{
$out = "GET {$ico_path} HTTP/1.1\r\n";
$out .= "Host: {$ico_host}\r\n";
$out .= "User-Agent=Mozilla/5.0 (Windows; U; Windows NT
5.1; ru; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3\r\n";
$out .= "If-Modified-Since: {$ico_ims}\r\n";
$out .= "Connection: Close\r\n\r\n";
fwrite($fp, $out);
$data = '';
while (!feof($fp)) $data .= fgets($fp, 128);
fclose($fp);
$response = substr($data, 0, 15);
$this->is_not_modified = !(strpos($response, '304')===false);
if ($this->is_not_modified)
{
$this->ico_data = 'not modified';
}
else
{
$data = explode("\r\n\r\n", $data);
if (count($data)>0)
{
unset($data[0]);
$this->ico_data = implode("\r\n\r\n", $data);
}
}
$this->output_data = '';
}
}
return $this->ico_data;
}
# get output data
function get_output_data()
{
if ($this->output_data=='')
{
if ($this->ico_data=='not modified')
{
# icon is not modified since defined time
$this->output_data = 'not modified';
}
elseif($this->ico_data=='')
{
# error(s) in getting icon data
$this->output_data = $this->empty_png();
}
else
{
# convert ico to png, gif & return
if (substr($this->ico_data, 0, 3)==='GIF') $this->ico_type = 'gif';
$this->output_data = $this->ico_data;
if ($this->ico_type==='ico')
{
$this->output_data = $this->ico2png($this->output_data);
}
if ($this->ico_type==='gif')
{
$this->output_data = $this->gif2png($this->output_data);
}
}
}
return $this->output_data;
}
# if error or icon is not found we output empty png image
function empty_png()
{
$res = '';
$im = imagecreatetruecolor(16, 16);
$color = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 1, 1, $color);
# output png
ob_start();
# imagesavealpha($im, true);
imagepng($im);
imagedestroy($im);
$res = ob_get_clean();
return $res;
}
# Convert gif to png function,
# support gif-functions by GD is needed
function gif2png($gif)
{
$im2 = imagecreatefromstring($gif);
# background alpha is disabled because IE 5.5 + have bug with alpha-channels
# by default background color is white
# imagealphablending($im, false);
# imagefilledrectangle($im, 0, 0, 16, 16, $color);
# imagealphablending($im, true);
$im = imagecreatetruecolor(16, 16);
$color = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 1, 1, $color);
imagecopy($im, $im2, 0, 0, 0, 0, 16, 16);
# output png
ob_start();
# imagesavealpha($im, true);
imagepng($im);
imagedestroy($im);
imagedestroy($im2);
$res = ob_get_clean();
return $res;
}
# Convert ico to png function,
# information about ico format is accessible on a site http://kainsk.tomsk.ru/g2003/sys26/oswin.htm,
function ico2png($ico)
{
$res = '';
while(!isset($tmp))
{
$tmp = '';
# get ICONDIR struct & check that it is correct ico format
$icondir = unpack('sidReserved/sidType/sidCount', substr($ico, 0, 6));
if ($icondir['idReserved']!=0 || $icondir['idType']!=1 || $icondir['idCount']<1) break;
$icondir['idEntries'] = array();
$entry = array();
for($i=0; $i<$icondir['idCount']; $i++)
{
$entry =
unpack('CbWidth/CbHeight/CbColorCount/CbReserved/swPlanes/swBitCount/LdwBytesInRes/LdwImageOffset',
substr($ico, 6 + $i*16, 16));
$icondir['idEntries'][] = $entry;
}
# select need icon & get it raw data
$iconres = '';
$bpx = 1; # bits per pixel
$idx = 0; # index of need icon
foreach($icondir['idEntries'] as $k=>$entry)
{
if ($entry['bWidth']==16 &&
isset($entry['swBitCount']) && $entry['swBitCount']>$bpx
&& $entry['swBitCount']<33)
{
$idx = $k;
$bpx = $entry['swBitCount'];
}
}
$iconres = substr($ico, $icondir['idEntries'][$idx]['dwImageOffset'], $icondir['idEntries'][$idx]['dwBytesInRes']);
unset($ico);
unset($icondir);
# getting bitmap info
$bitmap_info = array();
$bitmap_info['header'] =
unpack('LbiSize/LbiWidth/LbiHeight/SbiPlanes/SbiBitCount/LbiCompression/LbiSizeImage/LbiXPelsPerMeter/LbiYPelsPerMeter/LbiClrUsed/LbiClrImportant',
substr($iconres, 0, 40));
$bitmap_info['header']['biHeight'] = $bitmap_info['header']['biHeight'] / 2;
$number_color = 0;
if ($bitmap_info['header']['biBitCount'] > 16)
{
$number_color = 0;
$sizecolor =
$bitmap_info['header']['biWidth']*$bitmap_info['header']['biBitCount']
* $bitmap_info['header']['biHeight'] / 8;
}
elseif ( $bitmap_info['header']['biBitCount'] < 16)
{
$number_color = (int) pow(2, $bitmap_info['header']['biBitCount']);
$sizecolor =
$bitmap_info['header']['biWidth']*$bitmap_info['header']['biBitCount']
* $bitmap_info['header']['biHeight'] / 8;
if ($bitmap_info['header']['biBitCount']=='1') $sizecolor = $sizecolor * 2;
}
else return $res;
$rgb_table_size = 4 * $number_color;
for($i=0; $i<$number_color; $i++)
{
$bitmap_info['colors'][] = unpack('CrgbBlue/CrgbGreen/CrgbRed/CrgbReserved', substr($iconres, 40 + $i*4, 4));
}
$current_offset = 40 + $number_color * 4;
$arraycolor = array();
for($i=0; $i<$sizecolor; $i++)
{
$value = unpack('Cvalue', substr($iconres, $current_offset, 1));
$arraycolor[] = $value['value'];
$current_offset++;
}
# background alpha is disabled because IE 5.5 + have bug with alpha-channels
# by default background color is white
# imagealphablending($im, false);
# imagefilledrectangle($im, 0, 0, 16, 16, $color);
# imagealphablending($im, true);
$im = imagecreatetruecolor(16, 16);
$color = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 1, 1, $color);
# getting mask
$alpha = '';
for($i=0; $i<16; $i++)
{
$z = unpack('Cx/Cy', substr($iconres, $current_offset, 2));
$z = str_pad(decbin($z['x']), 8, '0', STR_PAD_RIGHT) . str_pad(decbin($z['y']), 8, '0', STR_PAD_LEFT);
$alpha .= $z;
$current_offset = $current_offset + 4;
}
# drawing image
$ico_size = 16;
$off = 0; # range (0-255)
# cases for different color depth
switch ($bitmap_info['header']['biBitCount'])
{
###################### for 32 bit icons ######################
case 32:
for($y=0; $y<$ico_size; $y++)
{
for($x=0; $x<$ico_size; $x++)
{
$a = round((255-$arraycolor[$off*4+3])/2);
$a = ($a<0) ? 0 : $a;
$a = ($a>127) ? 127 : $a;
$color = imagecolorallocatealpha($im,
$arraycolor[$off*4+2], $arraycolor[$off*4+1], $arraycolor[$off*4], $a);
imagesetpixel($im, $x, $ico_size-1-$y, $color);
$off++;
}
}
break;
###################### for 24 bit icons ######################
case 24:
for($y=0; $y<$ico_size; $y++)
{
for($x=0; $x<$ico_size; $x++)
{
$valpha = ($alpha[$off]=='1') ? 127 : 0;
$color = imagecolorallocatealpha($im,
$arraycolor[$off*3+2], $arraycolor[$off*3+1], $arraycolor[$off*3],
$valpha);
imagesetpixel ($im, $x, $ico_size-1-$y, $color);
$off++;
}
}
break;
###################### for 08 bit icons ######################
case 8:
for($y=0; $y<$ico_size; $y++)
{
for($x=0; $x<$ico_size; $x++)
{
$valpha = ($alpha[$off]=='1') ? 127 : 0;
$c = $arraycolor[$off];
$c = $bitmap_info['colors'][$c];
$color = imagecolorallocatealpha($im, $c['rgbRed'], $c['rgbGreen'], $c['rgbBlue'], $valpha);
imagesetpixel ($im, $x, $ico_size-1-$y, $color);
$off++;
}
}
break;
###################### for 04 bit icons ######################
# 318 = 22 (header) + 40 (bitmap_info) + 16 * 4 (colors) + 128 (pixels) + 64 (mask)
case 4:
for($y=0; $y<$ico_size; $y++)
{
for($x=0; $x<$ico_size; $x++)
{
$valpha = ($alpha[$off]=='1') ? 127 : 0;
$c = ($arraycolor[floor($off/2)]);
$c = str_pad(decbin($c), 8, '0', STR_PAD_LEFT);
$m = (fmod($off+1, 2)==0) ? 1 : 0;
$c = bindec(substr($c, $m*4, 4));
$c = $bitmap_info['colors'][$c];
$color = imagecolorallocatealpha($im, $c['rgbRed'], $c['rgbGreen'], $c['rgbBlue'], $valpha);
imagesetpixel ($im, $x, $ico_size-1-$y, $color);
$off++;
}
}
break;
###################### for 01 bit icons ######################
# 198 = 22 (header) + 40 (bitmap_info) + 2 * 4 (colors) + 64 (pixels, but real 32 needed?) + 64 (mask)
case 1:
for($y=0; $y<$ico_size; $y++)
{
for($x=0; $x<$ico_size; $x++)
{
$valpha = ($alpha[$off]=='1') ? 127 : 0;
$c = ($arraycolor[floor($off/8)]); # меняем байт каждые 8 пикселей
$c = str_pad(decbin($c), 8, '0', STR_PAD_LEFT);
$m = fmod($off+8, 8) + 1; # bit number
$c = (int) substr($c, $m-1, 1);
$c = $bitmap_info['colors'][$c];
$color = imagecolorallocatealpha($im, $c['rgbRed'], $c['rgbGreen'], $c['rgbBlue'], $valpha);
imagesetpixel ($im, $x, $ico_size-1-$y, $color);
$off++;
}
$off = $off + 16;
}
break;
##############################################################
default:
return '';
}
# output png
ob_start();
# imagesavealpha($im, true);
imagepng($im);
imagedestroy($im);
$res = ob_get_clean();
}
return $res;
}
}
?>
And you can use the above PHP script with the following call:
<?php
require_once('favicon.inc.php');
$favicon = new favicon('http://www.controlstyle.ru/', 0);
$fv = $favicon->get_output_data();
if ($fv!=='')
{
header('Content-type: image/png');
echo $fv;
}
?>
What would be nice is some PHP code / script that can convert the found favicon to a GIF / JPG or PNG image so you can use it inside the HTML code.
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Mail from your php code
This script will be used to mail someone from your code
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MB CopyMCF-DIR :: Copying or Moving Files and Child Files from Source Dir to Destination Dir
Copying or Moving Files and Child Files from Source Dir to Destination Dir
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Detect if a Date is a Holiday (Portuguese example)
Detect whether a a specific date is a holiday.
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