円チャートのjson出力を再フォーマットする方法は？

Question

これまでAjaxを使用してGoogleのグラフ（円グラフ）を描画していましたが、グラフは2つの列しか表示されないため、表示できます。

今、私はこのような縦棒グラフを描きたいと思います。

これは私のSQLクエリです：

$sql = "Select count(application_id) as count, application_status, category_group from mdl_local_jobs_application 
inner join mdl_local_jobs_job on mdl_local_jobs_application.application_jobid = mdl_local_jobs_job.job_id 
left join mdl_local_jobs_category on mdl_local_jobs_job.job_categoryid = mdl_local_jobs_category.category_id 
left join mdl_cohort_members on mdl_local_jobs_application.application_applicantid = mdl_cohort_members.userid 
left join mdl_local_cohortrole on mdl_cohort_members.cohortid = mdl_local_cohortrole.cohortid 
left join mdl_role on mdl_local_cohortrole.roleid = mdl_role.id where shortname = 'graduates' 
group by application_status, category_group"; 

クエリは、この使用してJSON出力にコード化されています

$result_rows = mysql_num_rows($query); 
$row_num = 0; 

//loop fetching the query into json format 
while ($result = mysql_fetch_array($query)) 
{ 
$row_num++; 
if ($row_num == $result_rows){ 
    echo "{\"c\":[{\"v\":\"" . $result['application_status'] . "\",\"f\":null},{\"v\":\"" . $result['category_group'] . "\",\"f\":null},{\"v\":" . $result['count'] . ",\"f\":null}]}"; 
} else { 
    echo "{\"c\":[{\"v\":\"" . $result['application_status'] . "\",\"f\":null},{\"v\":\"" . $result['category_group'] . "\",\"f\":null},{\"v\":" . $result['count'] . ",\"f\":null}]}"; 
} 
} 


echo " ] }"; 

これが出力されます：

{ "cols": [ {"id":"","label":"STATUS","pattern":"","type":"string"}, {"id":"","label":"CATEOGRY","pattern":"","type":"string"}, {"id":"","label":"TOTAL","pattern":"","type":"number"} ], "rows": [ {"c":[{"v":"0","f":null},{"v":"Accounting/Finance","f":null},{"v":2,"f":null}]}{"c":[{"v":"0","f":null},{"v":"Engineering","f":null},{"v":1,"f":null}]} ] } 

を

ただし、この出力はGoogleのグラフで読み取ることはできません。これがエラーです。

Error: Invalid JSON string: { "cols": [ {"id":"","label":"STATUS","pattern":"","type":"string"}, {"id":"","label":"CATEOGRY","pattern":"","type":"string"}, {"id":"","label":"TOTAL","pattern":"","type":"number"} ], "rows": [ {"c":[{"v":"0","f":null},{"v":"Accounting/Finance","f":null},{"v":2,"f":null}]}{"c":[{"v":"0","f":null},{"v":"Engineering","f":null},{"v":1,"f":null}]} ] } 

私の質問：私は、カラムチャートの出力を得るために、コードを再フォーマットする方法を？

Answer 1

は

if ($row_num == $result_rows){ 
    echo "{\"c\":[{\"v\":\"" . $result['application_status'] . "\",\"f\":null},{\"v\":\"" . $result['category_group'] . "\",\"f\":null},{\"v\":" . $result['count'] . ",\"f\":null}]},"; // <-- add comma 
} else { 
    echo "{\"c\":[{\"v\":\"" . $result['application_status'] . "\",\"f\":null},{\"v\":\"" . $result['category_group'] . "\",\"f\":null},{\"v\":" . $result['count'] . ",\"f\":null}]},"; // <-- add comma 
}