Partial array match instead of only absolute array match?

Match 'Firefox' in example versus having to put full UA in array.

[JAB Creations]

I want to serve content to only specific browsers that support a certain technology and I'm trying to build a white list array to do so. However the array only works if I add the exact useragent and does not partially match. So basically I just want to modify the script so that "Firefox" is allowed as a partial match instead of having to use the entire specific useragent string.

- John

<?php
$useragent = $_SERVER['HTTP_USER_AGENT'];

$capable_user_agents = array('Firefox',
'Opera',);
if(!in_array($_SERVER['HTTP_USER_AGENT'],$capable_user_agents))
{
echo 'unsupported technology message here';
}
else {
echo 'supported technology here';
}

[jatar_k]

you could do it in a loop and use stristr [php.net] to compare each element in your array to the user agent

[Little_G]

something like:

[pre]function array_value_in($array,$string){
  foreach($array as $elem){
   if(strpos($string,$elem)){return true;}
  }
}
[/pre]

(case sensitive)

Andrew

[JAB Creations]

*Edited* (Forgot the add $ to useragent)...still does not work though... */edit*

Here is my guess with stristr though it does not work...

- John

<?php

$useragent = $_SERVER['HTTP_USER_AGENT'];

$useragents = array('Firefox','Opera',);

if (strstr($useragents, $useragent))
{
echo 'your browser is supported';
}
else
{
echo 'fail';
}?>

[edited by: JAB_Creations at 3:50 pm (utc) on Jan. 5, 2007]

[jatar_k]

you missed the loop

this works

<? 
$useragent = $_SERVER['HTTP_USER_AGENT']; 
$useragents = array('Firefox','MSIE'); 
$checkit = ''; 
$answer = ''; 
foreach ($useragents as $ua) { 
 $checkit = stristr($useragent,$ua); 
 if ($checkit === false) { 
 $answer = false; 
 } else { 
 $answer = true; 
 break; 
 } 
} 
echo '<p>',$useragent; 
if ($answer) { 
 echo '<p>you can come in'; 
} else { 
 echo '<p>you are not welcome here'; 
} 
?>

[JAB Creations]

It took me a few minutes but what you did made sense, thanks! I just don't approach programming with more the a really basic concept and limited set of options.

- John