php - Altering mysql query based on variable -


so making click based search tool. nothing fancy , works great long pick @ least 1 thing available categories. want change there no mandatory categories pick from, if want pick category cpu, give results aswell.

this have input:

<form action="search.php" method="get">  <input value="i3"  name="cpu[]" type="checkbox">i3  <input value="i5"  name="cpu[]" type="checkbox">i5 <br> <input value="4gb"  name="ram[]" type="checkbox">4gb   <input value="8gb"  name="ram[]" type="checkbox">8gb<br> <input value="1tb"  name="storage[]" type="checkbox">1tb  <input value="500gb"  name="storage[]" type="checkbox">500gb<br> <input type="submit" value="search" class="submit" />

this part gathers clicked checkboxes (i left out cpu , ram parts since same):

if(isset($_get['storage'])){   if (is_array($_get['storage'])) {     foreach($_get['storage'] $storage_value){       $storage_term = trim($storage_value);       $storage_term_array[] = $storage_term;     if (!empty($storage_term)) {         $storage_bits[] = "`storage` '%$storage_term%'";     } } } } else $storage_bits="0";

and mysql_query goes this:

$res=mysql_query("select * laptop  (".implode(' or ', $cpu_bits).")   , (".implode(' or ', $ram_bits).")  , (".implode(' or ', $storage_bits).") , visibility=1");

this returns:

(`cpu` '%i5%') , (`ram` '%8gb%') , (`storage` '%1tb%' or `storage` '%500gb%')

this code working, said before need pick @ least 1 checkbox per category. how exclude lets and (".implode(' or ', $storage_bits)." part if $storage_bits="0"?

so far have had no luck case

$res=mysql_query("select * laptop  (".implode(' or ', $cpu_bits).")   , (".implode(' or ', $ram_bits).")  (case when ($storage_bits=0) 'and 1=1' else 'and (".implode(' or ', $storage_bits)."' end ) , visibility=1");

and not if working me.

$res=mysql_query("select * laptop  (".implode(' or ', $cpu_bits).")   , (".implode(' or ', $ram_bits).")  if($storage_bits=0,'1=1','and (".implode(' or ', $storage_bits).") , visibility=1");

it gives me no syntax errors whatsoever, doesn't give results. gives? feel missing quotation marks or pitiful cant seem wrap head around it. thanks!

try this:

$whereclause = "where visibility = 1"; if($cpu_bits != '0'){     $whereclause .= " , (".implode(' or ', $cpu_bits).")"; } if($ram_bits != '0'){     $whereclause .= " , (".implode(' or ', $ram_bits).")"; } if($storage_bits != '0'){     $whereclause .= "and (".implode(' or ', $storage_bits).")"; } $res=mysql_query("select * laptop".$whereclause);

doing this, preventing empty fields go in there clause.


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