mysqli multiple query - php

Question

I do following:
$query .=" SELECT * , COUNT(PRESENT) FROM seventh_a";
$query .=" WHERE class ='0' AND NAME ='Alexander Kirkby Scherer'";
$query .=" AND PRESENT = 'TS' GROUP BY lesson";
$query = " SELECT * , COUNT(lesson) FROM seventh_a";
$query .=" WHERE class ='0' AND NAME ='Alexander Kirkby Scherer'";
$query .=" GROUP BY lesson";
After that I can echo out $row['COUNT(PRESENT)'] but not $row['COUNT(lesson)'].
Can anybody tell me what to do to get both values, so that i am able to work with them?

Answer 1

According to the man page, if you're using mysqli_multi_query, you can access results from the different queries like so:
To retrieve the resultset from the first query you can use mysqli_use_result() or
mysqli_store_result(). All subsequent query results can be processed using
mysqli_more_results() and mysqli_next_result().
They give some sample code:
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
/* execute multi query */
if ($mysqli->multi_query($query)) {
do {
/* store first result set */
if ($result = $mysqli->store_result()) {
while ($row = $result->fetch_row()) {
printf("%s\n", $row[0]);
}
$result->free();
}
/* print divider */
if ($mysqli->more_results()) {
printf("-----------------\n");
}
} while ($mysqli->next_result());
}

Answer 2

You can't use 2 query . Use combine query like this
$query .=" SELECT * , COUNT(PRESENT),COUNT(lesson) FROM seventh_a";
$query .=" WHERE class ='0' AND NAME ='Alexander Kirkby Scherer'";
$query .=" AND PRESENT = 'TS' GROUP BY lesson";
you will get your result $row['COUNT(PRESENT)'] and $row['COUNT(lesson)']
OR use mysqli's multi_query function for this add ; between queries like this
$query .=" SELECT * , COUNT(PRESENT) FROM seventh_a";
$query .=" WHERE class ='0' AND NAME ='Alexander Kirkby Scherer'";
$query .=" AND PRESENT = 'TS' GROUP BY lesson;"; // semicolon here
$query .= " SELECT * , COUNT(lesson) FROM seventh_a";
$query .=" WHERE class ='0' AND NAME ='Alexander Kirkby Scherer'";
$query .=" GROUP BY lesson";