php - mysql query inside foreach loop fails, why? -

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can tell me why doesn't work? if try loop end '0'.

$lines=file('test.txt');  foreach ($lines $value) { $query="select sum(dailyunitssold) dus, sum(dailygrosssales) dgs,  count(*) cnt mydatatable category '%$value%'"; $joejoe=@mysql_query($query) or die (mysql_error()); $row = mysql_fetch_assoc($joejoe); echo $row['dus'].'<br />'.$row['dgs'].'<br />'.$row['cnt'].'<br />'; }

i'm trying pull sold totals single table based on each product's category. example, total sales blue widget category, total sales green widget category, purple widget category, etc. problem category field has multiple entries in each field, 1 product row might have 3 or 4 categories, hence bit.

thanks thoughts here.

what if run this:

$lines=file('test.txt');  foreach ($lines $value){     $query="select sum(dailyunitssold) dus, sum(dailygrosssales) dgs,  count(*) cnt mydatatable category '%$value%'";     $joejoe=@mysql_query($query) or die (mysql_error());     if (mysql_num_rows($joejoe) != 0) {         $row = mysql_fetch_assoc($joejoe);         echo $row['dus'].'<br />'.$row['dgs'].'<br />'.$row['cnt'].'<br />';     } else {         echo "empty value.<br />";     }     mysql_free_result($joejoe); }

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