Adding user-defined parameters to the SQL string opens you up to
SQL-injection attacks (mentioned above in my conversation with
Chrystopher). PHP's standard mysql library doesn't provide any measure of
protection against them, so I strongly recommend changing to using PDO's
with prepared statements and bound parameters. This may require you to
change your PHP configuration; run this script, and see if PDO is enabled,
and if so, see if it is set up for use with mysql:
<?php
phpinfo();
?>
Once it is enabled and set up for use with mysql, converting from the mysql
tools to PDO is relatively simple.
On Wednesday, December 12, 2012 5:08:05 PM UTC-5, Jose wrote:
>
> Hello asgallant, I see your still very active in helping other people
> which is very kind of you!
>
> Since you've last helped me, I've added just a couple of minor things but
> I'm still trying to figure out how to dynamically change/pass a value to
> the sql string so as it can plot the chart from different data. The two
> files I'm still using are 'chart.php' & 'chartdata.php'. How do I get
> chart.php to pass this variable and have the data file receive it? The sql
> fields are the same, it's just the column 'id_testKey' that will dictate
> what data is requested.
>
> José
>
> On Wednesday, October 17, 2012 5:40:15 PM UTC-7, asgallant wrote:
>>
>> You're welcome.
>>
>> On Wednesday, October 17, 2012 7:06:01 PM UTC-4, Jose wrote:
>>>
>>> Thank you very much, that helped! Now I'll use other chart options to
>>> fine tune it a bit to look similar to my excel charts.
>>> Really appreciate the help asgallant!
>>>
>>> On Wednesday, October 17, 2012 10:31:40 AM UTC-7, asgallant wrote:
>>>>
>>>> D'oh! My mistake, I did change something else. The (float) typing
>>>> converts null into 0, so you have to test for null and handle it
>>>> specially.
>>>> In your php file, the while loop should look like this:
>>>>
>>>> while($r = mysql_fetch_assoc($sth)) {
>>>> $temp = array();
>>>> $temp[] = array('v' => (float) $r['PsiBar']);
>>>> $temp[] = array('v' => (is_null($r['prodPerct1'])) ? null : (float)
>>>> $r['prodPerct1']);
>>>> $temp[] = array('v' => (is_null($r['prodPerct2'])) ? null : (float)
>>>> $r['prodPerct2']);
>>>> $temp[] = array('v' => (is_null($r['prodPerct3'])) ? null : (float)
>>>> $r['prodPerct3']);
>>>> $rows[] = array('c' => $temp);
>>>> }
>>>>
>>>> although, since your data is already in numerical form (and thus you
>>>> don't have to force it to be type float), you can go with the simpler:
>>>>
>>>> while($r = mysql_fetch_assoc($sth)) {
>>>> $temp = array();
>>>> $temp[] = array('v' => $r['PsiBar']);
>>>> $temp[] = array('v' => $r['prodPerct1']);
>>>> $temp[] = array('v' => $r['prodPerct2']);
>>>> $temp[] = array('v' => $r['prodPerct3']);
>>>> $rows[] = array('c' => $temp);
>>>> }
>>>>
>>>> It's also a good idea to force the mime type to application/json by
>>>> setting the header, before you echo the json:
>>>>
>>>> header("Content-type: application/json");
>>>> echo $jsonTable;
>>>>
>>>> On Wednesday, October 17, 2012 10:54:15 AM UTC-4, asgallant wrote:
>>>>>
>>>>> I used your code exactly as it appears in the files you posted, except
>>>>> for the modifications mentioned. I didn't save a copy, though, so I
>>>>> can't
>>>>> post them back. I'll see if I can duplicate it later today.
>>>>>
>>>>> On Wednesday, October 17, 2012 10:11:01 AM UTC-4, Jose wrote:
>>>>>>
>>>>>> Asgallant, I tried it again and still the same results, although I
>>>>>> did add that var option but it didn't help. I'm wondering if its
>>>>>> something
>>>>>> else in your scripts/code that is different than mine. If you could post
>>>>>> those, that would be great.
>>>>>> As another non sufficient way, could three separate SQL calls be made
>>>>>> then plot the results onto the same chart?
>>>>>>
>>>>>> On Tuesday, October 16, 2012 10:16:00 AM UTC-7, asgallant wrote:
>>>>>>>
>>>>>>> I duplicated your table and ran the query, and Method 2 looked right
>>>>>>> to me. I had to make 1 small change to the SQL to make it run (but
>>>>>>> that
>>>>>>> could be a quirk of my MySQL install), and 1 change to the chart
>>>>>>> options.
>>>>>>> The SQL looked like this:
>>>>>>>
>>>>>>> SELECT
>>>>>>> foo.PsiBar,
>>>>>>> IF(prodPerct1 = 0, null, foo.prodPerct1) as prodPerct1,
>>>>>>> IF(prodPerct2 = 0, null, foo.prodPerct2) as prodPerct2,
>>>>>>> IF(prodPerct3 = 0, null, foo.prodPerct3) as prodPerct3
>>>>>>> FROM (
>>>>>>> SELECT
>>>>>>> PsiBar,
>>>>>>> SUM(IF(id_sample = 1, prodPerct, null)) AS prodPerct1,
>>>>>>> SUM(IF(id_sample = 2, prodPerct, null)) AS prodPerct2,
>>>>>>> SUM(IF(id_sample = 3, prodPerct, null)) AS prodPerct3
>>>>>>> FROM tbl_dilution
>>>>>>> GROUP BY PsiBar
>>>>>>> ) AS foo
>>>>>>>
>>>>>>> and I set the "interpolateNulls" chart option to true:
>>>>>>>
>>>>>>> var options = {
>>>>>>> title: 'Line Chart Test',
>>>>>>> interpolateNulls: true
>>>>>>> };
>>>>>>>
>>>>>>>
>>>>>>> On Tuesday, October 16, 2012 12:51:40 PM UTC-4, Jose wrote:
>>>>>>>>
>>>>>>>> I gave both a try and neither looked as it should. Method 2
>>>>>>>> displays the chart as it did previous where it was plotting the null
>>>>>>>> '0'
>>>>>>>> values.
>>>>>>>>
>>>>>>>> On Monday, October 15, 2012 9:38:58 PM UTC-7, asgallant wrote:
>>>>>>>>>
>>>>>>>>> Hmmm...I can see two ways of handling that. One results in a
>>>>>>>>> messy DataTable, and will probably work; the other results in a
>>>>>>>>> cleaner
>>>>>>>>> DataTable, but might not work.
>>>>>>>>>
>>>>>>>>> Method 1: change the SQL statement to this:
>>>>>>>>> SELECT
>>>>>>>>> PsiBar,
>>>>>>>>> IF(id_sample = 1, prodPerct, null) AS prodPerct1,
>>>>>>>>> IF(id_sample = 2, prodPerct, null) AS prodPerct2,
>>>>>>>>> IF(id_sample = 3, prodPerct, null) AS prodPerct3
>>>>>>>>> FROM tbl_dilution
>>>>>>>>>
>>>>>>>>> removing the sums and the group by clause. This will result in
>>>>>>>>> more rows of data (with duplicate domain column entries) than
>>>>>>>>> necessary.
>>>>>>>>>
>>>>>>>>> Method 2: this will work only if 0 is not a valid value for your
>>>>>>>>> data points to have. Change the SQL to this:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> SELECT
>>>>>>>>> PsiBar,
>>>>>>>>> IF(prodPerct1 = 0, null, prodPerct1) as prodPerct1,
>>>>>>>>> IF(prodPerct2 = 0, null, prodPerct2) as prodPerct2,
>>>>>>>>> IF(prodPerct3 = 0, null, prodPerct3) as prodPerct3
>>>>>>>>> FROM (
>>>>>>>>> SELECT
>>>>>>>>> PsiBar,
>>>>>>>>> SUM(IF(id_sample = 1, prodPerct, null)) AS prodPerct1,
>>>>>>>>> SUM(IF(id_sample = 2, prodPerct, null)) AS prodPerct2,
>>>>>>>>> SUM(IF(id_sample = 3, prodPerct, null)) AS prodPerct3
>>>>>>>>> FROM tbl_dilution
>>>>>>>>> GROUP BY PsiBar
>>>>>>>>> ) AS foo
>>>>>>>>>
>>>>>>>>> which tests to see if the sum is 0, and if it is, sets the value
>>>>>>>>> to null instead. The DataTable will be cleaner, but it won't work if
>>>>>>>>> your
>>>>>>>>> values can be 0.
>>>>>>>>>
>>>>>>>>> On Monday, October 15, 2012 6:45:51 PM UTC-4, Jose wrote:
>>>>>>>>>>
>>>>>>>>>> asgallant, you are right, I am trying to get three lines plotted
>>>>>>>>>> for each 'id_sample'. Within each id group, there are 12 plot points.
>>>>>>>>>> I've tried the code you provided, thanks, but it appears to also
>>>>>>>>>> plot the null values '0' between each data point. How do I fix this?
>>>>>>>>>>
>>>>>>>>>> {"cols":[{"label":"PsiBar","type":"number"},{"label":"Series
>>>>>>>>>> 1","type":"number"},{"label":"Series
>>>>>>>>>> 2","type":"number"},{"label":"Series
>>>>>>>>>> 3","type":"number"}],"rows":[{"c":[{"v":0.39},{"v":0.36},{"v":0},{"v":0}]},{"c":[{"v":0.5},{"v":0},{"v":0.26},{"v":0.11}]},{"c":[{"v":0.56},{"v":0.49},{"v":0.34},{"v":0}]},{"c":[{"v":0.57},{"v":0},{"v":0},{"v":0.16}]},{"c":[{"v":0.84},{"v":0.56},{"v":0.41},{"v":0.15}]},{"c":[{"v":1.01},{"v":0.62},{"v":0.42},{"v":0}]},{"c":[{"v":1.02},{"v":0},{"v":0},{"v":0.24}]},{"c":[{"v":1.3},{"v":0.66},{"v":0.49},{"v":0}]},{"c":[{"v":1.31},{"v":0},{"v":0},{"v":0.26}]},{"c":[{"v":1.45},{"v":0.66},{"v":0.5},{"v":0.27}]},{"c":[{"v":1.74},{"v":0},{"v":0.52},{"v":0}]},{"c":[{"v":1.75},{"v":0.68},{"v":0},{"v":0.28}]},{"c":[{"v":2.1},{"v":0},{"v":0},{"v":0.28}]},{"c":[{"v":2.11},{"v":0},{"v":0.52},{"v":0}]},{"c":[{"v":2.12},{"v":0.68},{"v":0},{"v":0}]},{"c":[{"v":2.57},{"v":0},{"v":0.49},{"v":0.27}]},{"c":[{"v":2.58},{"v":0.65},{"v":0},{"v":0}]},{"c":[{"v":3.07},{"v":0},{"v":0},{"v":0.25}]},{"c":[{"v":3.09},{"v":0.6},{"v":0.46},{"v":0}]},{"c":[{"v":3.56},{"v":0.56},{"v":0},{"v":0.23}]},{"c":[{"v":3.57},{"v":0},{"v":0.42},{"v":0}]},{"c":[{"v":4.23},{"v":0},{"v":0},{"v":0.21}]},{"c":[{"v":4.34},{"v":0},{"v":0.39},{"v":0}]},{"c":[{"v":4.36},{"v":0.51},{"v":0},{"v":0}]}]}
>>>>>>>>>>
>>>>>>>>>> Really appreciate your help on this!
>>>>>>>>>>
>>>>>>>>>> On Thursday, October 11, 2012 12:43:03 PM UTC-7, asgallant wrote:
>>>>>>>>>>>
>>>>>>>>>>> You're not charting 3 series there, you have 1 series. Looking
>>>>>>>>>>> at your SQL table, I would guess that you want to display one
>>>>>>>>>>> series for
>>>>>>>>>>> each sample id, right? If so, then you need to break out the
>>>>>>>>>>> "prodPerct"
>>>>>>>>>>> column into 3 different columns - 1 for each series. This is
>>>>>>>>>>> probably best
>>>>>>>>>>> achieved in SQL, maybe with a query like this:
>>>>>>>>>>>
>>>>>>>>>>> SELECT
>>>>>>>>>>> PsiBar,
>>>>>>>>>>> SUM(IF(id_sample = 1, prodPerct, null)) AS prodPerct1,
>>>>>>>>>>> SUM(IF(id_sample = 2, prodPerct, null)) AS prodPerct2,
>>>>>>>>>>> SUM(IF(id_sample = 3, prodPerct, null)) AS prodPerct3
>>>>>>>>>>> FROM tbl_dilution
>>>>>>>>>>> GROUP BY PsiBar
>>>>>>>>>>>
>>>>>>>>>>> and then use this to build the table:
>>>>>>>>>>>
>>>>>>>>>>> $table['cols'] = array(
>>>>>>>>>>> array('label' => 'PsiBar', 'type' => 'number'),
>>>>>>>>>>> array('label' => 'Series 1', 'type' => 'number')
>>>>>>>>>>> array('label' => 'Series 2', 'type' => 'number')
>>>>>>>>>>> array('label' => 'Series 3', 'type' => 'number')
>>>>>>>>>>> );
>>>>>>>>>>>
>>>>>>>>>>> $rows = array();
>>>>>>>>>>> while($r = mysql_fetch_assoc($sth)) {
>>>>>>>>>>> $temp = array();
>>>>>>>>>>> $temp[] = array('v' => (float) $r['psiBar']);
>>>>>>>>>>> $temp[] = array('v' => (float) $r['prodPerct1']);
>>>>>>>>>>> $temp[] = array('v' => (float) $r['prodPerct2']);
>>>>>>>>>>> $temp[] = array('v' => (float) $r['prodPerct3']);
>>>>>>>>>>> $rows[] = array('c' => $temp);
>>>>>>>>>>> }
>>>>>>>>>>>
>>>>>>>>>>> On Thursday, October 11, 2012 12:50:04 PM UTC-4, Jose wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> Hi asgallant,
>>>>>>>>>>>>
>>>>>>>>>>>> Seeing Diana's example, I tried doing something similar with a
>>>>>>>>>>>> Line graph but it's not coming out as I'd like.
>>>>>>>>>>>> It displays the three series but links them all together
>>>>>>>>>>>> instead of individually displaying them (lineChart.jpg).
>>>>>>>>>>>> What I'm trying to achieve, is something similar to how it's
>>>>>>>>>>>> displayed in Excel (chart_xls.jpg).
>>>>>>>>>>>> If you could help me in the right direction, I'd appreciate it
>>>>>>>>>>>> alot as I have been trying various things and the outcome
>>>>>>>>>>>> isn't what I'm expecting.
>>>>>>>>>>>>
>>>>>>>>>>>> José
>>>>>>>>>>>>
>>>>>>>>>>>> On Wednesday, September 26, 2012 10:11:01 AM UTC-7, asgallant
>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>> What is throwing that error message? Is it PHP?
>>>>>>>>>>>>>
>>>>>>>>>>>>> You will have to adjust the data types to the type of data you
>>>>>>>>>>>>> are using, so if your first column isn't type string, you need to
>>>>>>>>>>>>> change it
>>>>>>>>>>>>> to something else in the column definitions (this goes for all
>>>>>>>>>>>>> columns -
>>>>>>>>>>>>> types must always match). Also, the (string) typecasting in this
>>>>>>>>>>>>> line:
>>>>>>>>>>>>>
>>>>>>>>>>>>> $temp[] = array('v' => (string) $r['PLACA']);
>>>>>>>>>>>>>
>>>>>>>>>>>>> is probably not necessary, unless you have a non-string data
>>>>>>>>>>>>> type that you need to specifically convert into a string.
>>>>>>>>>>>>>
>>>>>>>>>>>>> If you can post a link to the page, I can help debug things on
>>>>>>>>>>>>> the javascript end, if it turns out that is where the problem is.
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Wednesday, September 26, 2012 4:47:20 AM UTC-4, Barbara
>>>>>>>>>>>>> Gerstl wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> That is what I did... but, when opening goochart2.html, the
>>>>>>>>>>>>>> result is the Error-Massage "string".
>>>>>>>>>>>>>> I think, it has something to do with the field settings of
>>>>>>>>>>>>>> the columns. Do you have any tipps?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Thank you!
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Am Montag, 24. September 2012 19:26:26 UTC+2 schrieb
>>>>>>>>>>>>>> asgallant:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> You can extrapolate from the code that the table has 6
>>>>>>>>>>>>>>> columns: PLACA, S1, S2, S3, S4, S5.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On Monday, September 24, 2012 10:15:44 AM UTC-4, Barbara
>>>>>>>>>>>>>>> Gerstl wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Hello Diana!
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Thank you very much for showing the whole process on how to
>>>>>>>>>>>>>>>> combine Google Graph API with a MySQL-Database. That is
>>>>>>>>>>>>>>>> exactly what I am
>>>>>>>>>>>>>>>> looking for.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> I tried to rebuild your example and I am having problems
>>>>>>>>>>>>>>>> with the structure of the database/field settings. Can you
>>>>>>>>>>>>>>>> show me
>>>>>>>>>>>>>>>> structure and field settings of the table "bd_salidas"?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Thank you for your answer.
>>>>>>>>>>>>>>>> Barbara
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Am Mittwoch, 5. September 2012 21:56:35 UTC+2 schrieb Diana
>>>>>>>>>>>>>>>> Flores:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> yeaaaaaaahhhHHHH!!!!, we did it!!!!!!!!!!!!!. well at
>>>>>>>>>>>>>>>>> first i tried the .DataTable(jsonData); but it gave me
>>>>>>>>>>>>>>>>> errors but i put
>>>>>>>>>>>>>>>>> the JSON.parse(jsonData)); and it
>>>>>>>>>>>>>>>>> works!!!!!!!!!!!!!!!!!!....im so
>>>>>>>>>>>>>>>>> happy!!! i will attach the files in case someone has the same
>>>>>>>>>>>>>>>>> problem!!!!!!!!....really really grateful, cause with your
>>>>>>>>>>>>>>>>> help i learned a
>>>>>>>>>>>>>>>>> lot of things!!!!....one month ago I was "what its php or
>>>>>>>>>>>>>>>>> mysql....JSON
>>>>>>>>>>>>>>>>> O_O???" i think its a lot, but thanks!!!!
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
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