arama seçeneği çalışmıyor.

Question

<?php 
while ($row = mysql_fetch_array($query)) { 

    $id=$row["id"]; 
    $purchase_id=$row["purchase_id"]; 
    $sql1=mysql_query("select *,DATE_FORMAT(`date`,'%Y-%m-%d') as date from purchase_detail where id='$purchase_id'"); 
    $row1=mysql_fetch_array($sql1); 
    $date=$row1["date"]; 
    $material_detail=$row1["material"]; 
    $purchase_price=$row1["purchase_price"]; 
    $sales_price=$row1["sales_price"]; 
    $vendorname=$row1["vendorname"]; 
    $comname=$row1["comname"]; 
    $other_detail=$row1["other_detail"]; 
    $type=$row1["type"]; 

    echo"<tr bgcolor='#FFFFFF'>"; 

    $bill_no=$row["bill_no"]; 

    if ($bill_no == '') { 
    echo "<tr bgcolor='pink'>"; 
    } 
    if ($bill_no != '') // when i use if condition than search option not working 
    { 
    echo"<tr bgcolor='red'>"; 
    } 
    else { 
    echo"<tr bgcolor='white'>"; 
    } 

    echo "<td><input type='checkbox' class='active' name='active[]' id='active' value='".$row["id"]."'></input></td>"; 
    echo "<td> ".$row["make_bill_id"]."</td>"; 
    echo"<td>".$row["bill_no"]."</td>"; 
    echo"<td>".$date."</td>"; 
    echo "<td> ".$material_detail."</td>"; 
    echo "<td> ".$other_detail."</td>"; 
    echo "<td> ".$purchase_price."</td>"; 
    echo "<td> ".$vendorname."</td>"; 
    echo "<td> ".$sales_price."</td>"; 
    echo "<td> ".$type."</td>"; 
    echo "<td> ".$comname."</td>"; 
    echo "<td> ".$row["assign_by"]."</td>"; 


    echo"</tr>"; 
} 
?> 

Answer 1

// Remove this one 
    //echo"<tr bgcolor='#FFFFFF'>"; 

    $bill_no=$row["bill_no"]; 

    if ($bill_no == '') { 
    echo "<tr bgcolor='pink'>"; 
    } 
    else if ($bill_no != '') // when i use if condition than search option not working 
    { 
    echo"<tr bgcolor='red'>"; 
    } 
    else { 
    echo"<tr bgcolor='white'>"; 
    }