Php Programming Code Examples
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Parses HTTP_USER_AGENT so that you can customize your site to different browsers
Parses HTTP_USER_AGENT so that you can customize your site to different browsers
<?
/* Get the name the browser calls itself and what version */
$Browser_Name = strtok($HTTP_USER_AGENT, "/");
$Browser_Version = strtok( " ");
/* MSIE lies about its name */
if(ereg( "MSIE", $HTTP_USER_AGENT))
{
$Browser_Name = "MSIE";
$Browser_Version = strtok( "MSIE");
$Browser_Version = strtok( " ");
$Browser_Version = strtok( ";");
}
/* try to figure out what platform, windows or mac */
$Browser_Platform = "unknown";
if(ereg( "Windows",$HTTP_USER_AGENT) ||
ereg( "WinNT",$HTTP_USER_AGENT) ||
ereg( "Win95",$HTTP_USER_AGENT))
{
$Browser_Platform = "Windows";
}
if(ereg( "Mac", $HTTP_USER_AGENT))
{
$Browser_Platform = "Macintosh";
}
/* set the JavaScript and CSS properties */
/* JavaScriptOK means that the browser understands JavaScript on */
/* the same level the Navigator 3 does. Most importantly, it can use */
/* named images. If a browser doesn't do this (Nav 2 or MSIE 3), then */
/* we just assume it can't do any JavaScript. Referencing images by */
/* load order is too hard to maintain. */
/* CSSOK is kind of sketchy in that Nav 4 and MSIE work differently, */
/* but they do seem to have most of the functionality. MSIE 4 for the */
/* Mac has buggy CSS support, so we let it do JavaScript, but no CSS. */
/* Support for UNIX browser could be useful. */
$Browser_JavaScriptOK = 0;
$Browser_CSSOK = 0;
if(($Browser_Platform == "Windows"))
{
if($Browser_Name == "Mozilla")
{
if($Browser_Version >= 3.0)
{
$Browser_JavaScriptOK = 1;
}
if($Browser_Version >= 4.0)
{
$Browser_CSSOK = 1;
}
}
else /* must be MSIE */
{
if($Browser_Version >= 4.0)
{
$Browser_JavaScriptOK = 1;
$Browser_CSSOK = 1;
}
}
}
else /* must be mac */
{
if($Browser_Name == "Mozilla")
{
if($Browser_Version >= 3.0)
{
$Browser_JavaScriptOK = 1;
}
if($Browser_Version >= 4.0)
{
$Browser_CSSOK = 1;
}
}
else /* must be MSIE */
{
if($Browser_Version >= 4.0)
{
$Browser_JavaScriptOK = 1;
}
}
}
?>
