Matching my form string with condition in database in php? - php

Question

This is coming from my form field :
$subject="physics with maths";
This is in my database :
$keywordsindatabse="(physics && electronics) || (electronics & communication) || (electronics and communication)";
On submission of form I want to match the condition $keywordsindatabse with $subject.
Any Ideas?
Any help will be appreciated.
Code:
<form id="myform" name="myform">
<select name="sselect" id="itmn">
<option value="">Select</option>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
<option value='6'>6</option>
<option value='7'>7</option>
</select>
<input type='text' name='gmajorsub' id=""" value="" onblur="chkdegree(document.getElementById('itmn').value,this.value);">
</form>
<script>
function chkdegree(item_id,keyword)
{
$.ajax({
type: "GET",
url: "degree_match.php",
dataType: 'html',
data: {item_id : item_id,keyword : keyword},
success: function(data){
if(data=="0")
{
alert("Dear Applicant, You are not allowed to register.You Subject not matching our essential qualification requirements.");
document.getElementById("gmajorsub").value="";
document.getElementById("gmajorsub").focus();
return false;
}
}
});
}
</script>
degree_match.php:
<?php
include("../../lib/dbc/dbConnection.php");
require('../../lib/dbc/commonFunc.php');
require('../../lib/dbc/dbHandler.class.php');
$dbObject = new dbHandler();
$dbObject->connect();
$query="select * from advt_110_post_details where recNo='".$_REQUEST['item_id']."'";
$result=mysql_query($query);
$num=mysql_fetch_array($result);
$keyword=strtolower($_REQUEST['keyword']);
$degree=$num['subject_keywords'];
$degree1=explode("|",$degree);
$max = array(null, 0); // category, occurences
/*foreach($degree1 as $k => $v) {
$replaced = str_replace($v, '##########', $keyword);
preg_match_all('/##########/i', $replaced, $matches);
if(count($matches[0]) > $max[1]) {
$max[0] = $k;
$max[1] = count($matches[0]);
}
}
if($max[1]>=count($degree1))
{
echo"1";
}
else{
echo"0";
}
*/
/*foreach($degree1 as $k => $v) {
if ( strstr( $membership, "member" ) )
{
}
}
*/
?>

Answer 1

Note: You're code is subject ot SQL injection. Look at using PDO prepared statements or mySQLi prepared statements. At the very least, wrap string input into hte database in mysql_real_escape_string.
Looking at your code, you're getting items from a database and then filtering. I'm assuming mySQL.
You might be better doing this withing the database end. Check out "full text search". This only works with MyISAM tables, so change that if needed. Then add a FullText index to the table on the 'subject_keywords' and you'll need to set up a boolean seaerch using full text. Details on the boolean search are here.
(Failing that, Rishi's answer above has introduced the loops you need - that was missing from your attempt.)

Answer 2

As far as i understood from your post, the below code might help..
$subject="physics with maths";
$keywordsindatabse="(physics && electronics) ||
(electronics & communication) ||
(electronics and communication)";
$pieces = explode(" ", $subject);
$piecesDB = explode("||", $keywordsindatabse);
$subsDBv=array();
foreach($piecesDB as $key=>$subsDB){
$subsDBv[$key] = str_replace(array("(",")"),"",explode(" ", $subsDB));
}
foreach($subsDBv as $subslvd){
foreach($subslvd as $subslv){
$ao = next($subslvd);
foreach($pieces as $subs){
if((strpos($subslv,$subs) !== false) AND (strpos($ao,$subs) !== false)){
echo "Match found..<br />";
}
else{
echo "Sorry, no match found..<br />";
}
}
}
}