how to search using binary search from data from table in php

i have update my source code like this.

<form action="" method="post" enctype="multipart/form-data">

<html>
<input name="studentid" type="radio" value="2013234321">2013234321


<br>
<input type="submit" name="submit" value="Search" />

</form>
</html>

<?php
 if (isset($_POST['submit']))
{ 

 $se = $_POST['studentid'];
 function binarySearch($array, $searchFor)
 {
 $low = 0;
 $high = count($array) - 1;
 $mid = 0;

 while ($low <= $high)
 {
 $mid = floor(($low + $high) / 2);
 $element = $array[$mid];

 if ($searchFor == $element)
 {
 return $mid;
 }
 else if ($searchFor < $element)
 {
 $high = $mid - 1;
 }
 else
 {
 $low = $mid + 1;
 }

 }
 echo "Unsuccess";
 }

 function generateOrderedArray()
 {
 $db = mysql_connect("localhost", "root", ""); 
 mysql_select_db("dbehomebooking",$db); 
 $query = "SELECT studentid FROM approval"; 
 $array = mysql_query($query) or die ('<p>' . mysql_error()); 
 while ($row = mysql_fetch_array($array)) 
 { 
 echo '<br>',$row['studentid']; 
 }
 return $array;
 }


 $binaryArray = generateOrderedArray();

 print (binarySearch($binaryArray, $se));

}
?>

the function generateOrderedArray() is function really well. as it display the data from the table 'approval' However, when i want to search one of the data, example, i want to search '2013234321' , using binarysearch() function, there is an error. why is that?

0
2013234321
2012345431Unsuccess

how to search using binary search from data from table in php

the data i used in from the table and i have change into array

dayanadolce

lammert

dayanadolce

Join The Conversation

Moderators and Top Contributors

Hot Threads This Week