PHP : Multiple Textform Search - php

Question

So , i got a form to search for jobseeker through the database . The form contain name , identity card , job position , academic certificate , age etc . The problem that i'm facing is when i'm searching for jobseeker based only on one text form for example , job position , the result is shown . But , if i want to search for jobseeker based on job position and academic level , the result is shown based on job position only . Is there anything wrong with my code ? need help here .. sorry for my bad english though ..
for job position :
$jawatan_arr = explode(',', $_POST['txt_jawatan']);
$jum_jawatan = count($jawatan_arr);
//echo "jum_didik = ".$jum_didik;
if($jum_jawatan > 0){
$d = 0;
foreach ($jawatan_arr as $value){
$d++;
//echo "; value::: ".$value." :::";
if($d == 1){
if($value != ''){
if($str == ''){
$str = " WHERE ";
}
else{
$str .= " AND ";
}
$str_jawatan .= " (LOWER(jawatan) LIKE '%".strtolower(rtrim(ltrim($value)))."%' ";
}
}
else{
if($value != ''){
$str_jawatan .= " OR LOWER(jawatan) LIKE '%".strtolower(rtrim(ltrim($value)))."%' ";
}
}
}
if($str_jawatan != ''){
$str_jawatan .= ") ";
$sql = "SELECT no_kp FROM jobseeker_pengalaman ".$str_jawatan;
$res = mysql_query($sql);
while($row = mysql_fetch_array($res)){
if($row['no_kp'] != ''){
if(!in_array($row['no_kp'], $senarai_kp)){
array_push($senarai_kp, $row['no_kp']);
}
}
}
}
}
for academic level(checkbox , not a textform) :
$didik_arr = explode(',', $_POST['txt_taraf_pendidikan']);
$jum_didik = count($didik_arr) - 1;
//echo "jum_didik = ".$jum_didik;
if($jum_didik > 0){
$d = 0;
foreach ($didik_arr as $value){
$d++;
//echo "; value::: ".$value." :::";
if($d == 1){
if($str == ''){
$str = " WHERE ";
}
else{
$str .= " AND ";
}
$temp_didik .= $value;
}
else{
if($value != ''){
$temp_didik .= ",".$value;
}
}
}
//$str_didik .= " id_taraf_pendidikan IN (".$temp_didik.")";
$sql = "SELECT no_kp FROM jobseeker_pendidikan WHERE id_taraf_pendidikan IN (".$temp_didik.")";
$res = mysql_query($sql);
while($row = mysql_fetch_array($res)){
if($row['no_kp'] != ''){
if(!in_array($row['no_kp'], $senarai_kp)){
array_push($senarai_kp, $row['no_kp']);
}
}
}
}
Do i need to join the my table ? because the job position is based on recent job experience , and academic is based on their study . Both of them are from different table

Answer 1

May be you can try IN statement? Something like this:
$sql = "SELECT no_kp FROM jobseeker_pengalaman ".$str_jawatan." IN
(
SELECT no_kp FROM jobseeker_pendidikan WHERE id_taraf_pendidikan IN (".$temp_didik.")
)";
So you will search by job positions within that jobseekers that already passed through your academic based search. I hope this approach will help.