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<?php
function random_gen($length)
{
$strset='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890';
$random= "";
srand((double)microtime()*1000000);
// Add the special characters to $char_list if needed
for($i = 0; $i < $length; $i++)
{
$random .= substr($strset,(rand()%(strlen($strset))), 1);
}
return $random;
}
/////////////////////////////////////////////////////////
function check_jpg($ext){
if (($ext == "image/jpeg") ||($ext == "image/pjpeg") || ($ext == "image/jpg"))
{
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////
function check_gif($ext){
if (($ext == "image/gif") )
{
return true;
}
return false;
}
//////////////////////////////////////////////////////////////
function check_flash_movie($ext)
{
if ($ext == "application/x-shockwave-flash")
{
return true;
}
return false;
}
////////////////////////////////////////////////////////
function check_flv($ext){
if (($ext == "flv"))
{
return true;
}
return false;
}
?>