A small function to detect whether it is a valid email address

/*
// Function name: CheckEmailAddr($C_mailaddr)
// Function: Determine whether it is a valid email address
// Parameter: $C_mailaddr (email address to be detected)
// Return value: Boolean value
// Remarks: None
*/
function CheckEmailAddr($C_mailaddr)
{
if (!eregi(“^[_a-z0-9-]+(.[_a-z0-9-] +)*@[a-z0-9-]+(.[a-z0-9-]+)*$”,
$C_mailaddr))
//(!ereg(“^[_a-zA-Z0- 9-]+(.[_a-zA-Z0-9-]+)*@[_a-zA-Z0-9-]+(.[_a-zA-Z0-9-]+)*$”,
 $c_mailaddr))
{
return false;
}
return true;
}
?>