PHP

After allot of trial and error I ended up coming up with some code that will redirect users to a mobile friendly page, this method won’t really be useful in about 5 years because modern browsers like safari allow full page viewing but this will get you by until then. Remember this code will have to change constantly if you want to stay up to date with the latest hand held devices and mime types.

To get started all you have to do is place the following code in the stop of your php page. If your loading an application you can post this below your application just don’t output any data before the code is executed. To get started making mobile friendly pages you can purchase your domain names and hosting by clicking here.


$mobile_browser = '0';if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone)/i',
strtolower($_SERVER['HTTP_USER_AGENT']))){
$mobile_browser++;
}

if((strpos(strtolower($_SERVER[‘HTTP_ACCEPT’]),’application/vnd.wap.xhtml+xml’)>0) or
((isset($_SERVER[‘HTTP_X_WAP_PROFILE’]) or isset($_SERVER[‘HTTP_PROFILE’])))){
$mobile_browser++;
}

$mobile_ua = strtolower(substr($_SERVER[‘HTTP_USER_AGENT’],0,4));
$mobile_agents = array(
‘w3c ‘,’acs-‘,’alav’,’alca’,’amoi’,’audi’,’avan’,’benq’,’bird’,’blac’,
‘blaz’,’brew’,’cell’,’cldc’,’cmd-‘,’dang’,’doco’,’eric’,’hipt’,’inno’,
‘ipaq’,’java’,’jigs’,’kddi’,’keji’,’leno’,’lg-c’,’lg-d’,’lg-g’,’lge-‘,
‘maui’,’maxo’,’midp’,’mits’,’mmef’,’mobi’,’mot-‘,’moto’,’mwbp’,’nec-‘,
‘newt’,’noki’,’oper’,’palm’,’pana’,’pant’,’phil’,’play’,’port’,’prox’,
‘qwap’,’sage’,’sams’,’sany’,’sch-‘,’sec-‘,’send’,’seri’,’sgh-‘,’shar’,
‘sie-‘,’siem’,’smal’,’smar’,’sony’,’sph-‘,’symb’,’t-mo’,’teli’,’tim-‘,
‘tosh’,’tsm-‘,’upg1′,’upsi’,’vk-v’,’voda’,’wap-‘,’wapa’,’wapi’,’wapp’,
‘wapr’,’webc’,’winw’,’winw’,’xda’,’xda-‘);

if(in_array($mobile_ua,$mobile_agents)){
$mobile_browser++;
}
if (strpos(strtolower($_SERVER[‘ALL_HTTP’]),’OperaMini’)>0) {
$mobile_browser++;
}
if (strpos(strtolower($_SERVER[‘HTTP_USER_AGENT’]),’windows’)>0) {
$mobile_browser=0;

}

//change this to your mobile friendly page
if($mobile_browser>0){
header( “Location: http://www.yourwebsite.com/mobile/” ) ;
} else {
// do something else
}

$ua = $HTTP_USER_AGENT;
if (stristr($ua, “Windows CE”) or stristr($ua, “AvantGo”) or stristr($ua,
“Mazingo”) or stristr($ua, “Mobile”) or stristr($ua, “T68”) or stristr($ua,
“Syncalot”) or stristr($ua, “Blazer”) or stristr($ua, “NetFront”))
{
$DEVICE_TYPE=”MOBILE”;
}

if (isset($DEVICE_TYPE) and $DEVICE_TYPE==”MOBILE”)
{
//change this to your mobile friendly page
header( “Location: http://www.yourwebsite.com/mobile/” ) ;
exit;
}

?>

Recently I came across a problem making a twitter plugin. I needed to make links which had no “a” tag into links. You can do this progamaticly and here is the solution:

If you are going to use this script please download from here: links.php.txt

function makeClickableLinks($text) {

$text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',

    '1', $text);

  $text = eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)',

    '12', $text);

  $text = eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})',

    '1', $text);

return $text;

}

// Usage

// Email address example

$text = "you@example.com";

echo makeClickableLinks($text);

echo "

";

// URL example

$text = "http://www.example.com";

echo makeClickableLinks($text);

echo "

";

// FTP URL example

$text = "ftp://ftp.example.com";

echo makeClickableLinks($text);

Ok I recently came up with a problem creating thumbnails for a project I am working on. I was stumped for hours, it seems that some files that were saved from a mac or certain photo editing programs would cause php to not recognize it a jpg thus giving the error:  

imagecreatefromjpeg() : gd-jpeg, libjpeg: recoverable error: Premature end of JPEG

After researching this problem I realized it was a problem with php 5 and gd2. Heres how to fix it

• php 4 : No action neccesarry it should work fine
online paycheck advanceveritrix.com/mobi/how do i get a cash loan
• php 5.0 – 5.1.2 = Upgrade to the latest php 5
• php 5.1.3 – current = Declare this variable in your file before calling imagecreatefromjpeg()   

ini_set(‘gd.jpeg_ignore_warning’, 1);

Doing that will cause gd2,php to ignore the error and continue where it use to just fail and do nothing.