$xyz = explode(':', $_POST["sira"]); foreach($xyz AS $t) { mysql_query("UPDATE tablo SET a='$t[1]' WHERE b='$t[0]'"); }
foreach ($_POST['sira'] as $sira) { $xyz = explode(':', $sira); foreach ($xyz as $b) { //... } }
foreach( $_POST["sira"] as $sira ) { $t = explode( ':', $sira ); mysql_query( "UPDATE tablo SET a='$t[1]' WHERE b='$t[0]'" ); }