The HTML page to get input from user is given below.
<html>
<head>
<title>Search Engine</title>
<style type="text/css">
body{ font-size:20; font-weight:bold; font-stretch:semi-expand; font-family:MSserif; color:#0066CC;
background-color:#EEEEE4;
align:center; background-color:white }
h4{ background-color:#0066CC; color:#FFFFFF; font-family:verdana; }
h3{ color:#0066CC; }
th{ background-color:#6996ED; color:#FFFFFF; font-family:Arial; }
a{text-decoration:none;}
</style>
</head>
<body>
<?php
if($submit)
{
if(!$keywords){
$errmsg="Sorry, Please fill in search field";
form($errmsg);
}else{
//Start Timer
$start = getmicrotime();
//PERFORM SEARCH OPERATION AND DISPLAY RESULT
}else {
//end Timer
$end = getmicrotime();
//TOTAL TIME TAKEN TO DO SEARCH OPERATION
$time_taken=(float)($end-$start);
$time_taken=number_format($time_taken,2,'.','');
echo
"<p>Your Query Executed in $time_taken Seconds";
$errmsg="<p>No Search result found for '$keywords'";
echo $errmsg;
echo "<br /><a href="#" onclick="history.back()">Back</a>";
}//endof isset ref
}//end of if key word exists
} else { //display the form
form($keyword);
} //END OF FORM DISPLAY ?>
</body>
</html>
<?php
function form($errmsg)
{ ?>
<h4 align="center">Search Engine</h4>
<b><?php echo $errmsg; ?></b>
<form method=POST action=<?php echo $PHP_SELF ?>>
Enter keywords to search on:
<input type="text" name="keywords" maxlength="100" />
<input type="submit" name="submit" value="Search" />
</form>
</body>
</html>
<?php
}
function
getmicrotime()
{
list($usec,$sec)=explode(" ",microtime());
return ((float)$usec+(float)$sec);
}
?>
Function
end of the search process.
getmicrotime() returns time in microseconds. This function is called during start andend of the search process.
