I have to figure out how to present some data that is capture using gravity forms for wordpress.
There is a field for name, and attributes. Attributes contains a comma delineated list of values.
On a results page I need to display the names, followed by the top ten values. Where I'm stuck is is how to configure an array that gives me: distinct names, and within each distinct name is an array containing all values from the comma list(s).
I can't wrap my head around this to save my life. Given how GF stores enteries I think makes this especially difficult. Any guidance is much appreciated.
<?php
// A two-dimensional array:
$names = array
(
"sam"=>array(1,2,3,4,5,6,7,8,9,10),
"joe"=>array(1,2,3,4,5,6,7,8,9,10),
"bob"=>array(1,2,3,4,5,6,7,8,9,10)
);
?>
Like that?
Related
I'm a little bit stuck.
I have an SQL column that contains weather codes (like Rain, Snow, etc.)
It is comma separated so the column would have a value of something like
rain,snow,haze
Now, I want to select the rows that contain values from an array.
I have an SQL code that is something like this:
SELECT * FROM locations WHERE currentWeather IN ('rain', 'snow', 'cloudy') ORDER BY name ASC
The problem is that this obviously works when currentWeather column only contains one item.
Is there a way to do it so that if the column value contains any of the items from the given array, it selects it?
Also, would it select it twice if two items match?
Best wishes
Use unnest in a subselect.
Select distinct A.myArray from (select unnest(column) as myArray from table) A where A.myArray in (your words to filter for)
Notice that using arrays in sql isn't very ideal and does not follows normalization rules. Your tables should ideally not contain arrays but rather just several rows each one containing the specific value you Want. It prevents issues such as this one.
To avoid the selection of repeated values, use the Distinct keyword right after you write select.
Rsference:
https://www.w3resource.com/PostgreSQL/postgresql_unnest-function.php
WHERE FIND_IN_SET(currentWeather, "rain,snow,cloudy")
Picks apart the string at commas (only) to see if currentWeather is any one of those 3 'words'.
See also FIELD(...)
I am having an issue where I have a table in a database which stores values in this form 1,3,4,55,6,22,44 and I have an array which is dynamic from the client side it can be like 2,55,33,1,33,99
I want to make a query to select this field if the at least any value matches between the fields.
Like select the field if in the database value there exists 24 and I have 23,24,55,66 from the user array
I think this can be done with find_in_set() or the IN keyword
It is not a good practice to create comma seperated values in a column. Usually people feel that it was the easiest and simplest method, but it is not. Searching and modification will be so hard. Find set can be used if you have a single item to search ; In your case you can do it like this. Implode the array with | and use it in regular expression.
<?php
$arr = Array(2,55,33,1,33,99);
echo 'select * from table where CONCAT(",", `field`, ",") REGEXP ",('.implode("|",$arr).'),"';
?>
For comparing two arrays, you should use:
array_intersect()
after converting table data into array as well.
Reference
I have a table named 'jobs' with field 'categories'.
Now Values in my category field is like this
368,369,372,379,380,381
368,369,372
369,373,374,375,376
491,492
& i am getting values with search like this
'368','374','490'
Now how to compare myvalue to field value, I can't use "IN" in this stage.
In above case,
If i have values like "'368','374','490'" this, i want first three rows, beacause it contains atleast one value from my list.
how can i do this? Please suggest.
if you happy to use in programming end (i.e. using php) , you can pull those database data into an associative array. Then you can easily that array for your data manipulation. In php there are many inbuilt functions for arrays. you can use those.
http://de3.php.net/manual/en/language.types.array.php
http://www.php.net/manual/en/ref.array.php
I have a feed that comes from the State of Florida in a CSV that I need to load daily into MySQL. It is a listing of all homes for sale in my area. One field has a list of codes, separated by commas. Here's one such sample:
C02,C11,U01,U02,D02,D32,D45,D67
These codes all mean something (pool, fenced in area, etc) and I have the meanings in a separate table. My question is, how should I handle loading these? Should I put them in their own field as they are in the CSV? Should I create a separate table that holds them?
If I do leave them as they are in a field (called feature_codes), how could I get the descriptions out of a table that has the descriptions? That table is simply feature_code, feature_code_description. I don't know how to break them apart in my first query to do the join to bring the description in.
Thank you
As a general rule, csv data should never stored in a field, especially if you actually need to consider individual bits of the csv data, instead of just the csv string as a whole.
You SHOULD normalize the design and split each of those sub "fields" into their own table.
That being said, MySQL does have find_in_set() which allows you sort-of search those csv strings and treat each as its own distinct datum. It's not particularly efficient to use this, but it does put a bandaid on the design.
You should keep the information about feature codes in a separate table, where each row is a pair of house identifier, and feature identifier
HouseID FeatureID
1 C07
1 D67
2 D02
You can use explode() to separate your CSV string : http://php.net/manual/en/function.explode.php
$string = 'C02,C11,U01,U02,D02,D32,D45,D67';
$array = explode(',', $string);
Then with your list of feature_codes you can easily retrieve your feature_code_description but you need to do another query to get an array with all your feature_codes and feature_code_description.
Or split your field and put it in another table with the home_id.
You can save it in your DB as is and when you read it out you can run the php function explode. Go check that function out. It will build an array for you out of a string separating the values by whatever you want . In your case you can use:
$array_of_codes = explode(",", $db_return_string);
This will make an array out of each code separating them by the commas between them. Good luck.
this is probably quite simple but I could do with some help.
I am trying to create a small PHP function that will display a single value form a multidimensional array when the user used two dropdown boxes to select the row and column of the array.
So, the user will make a selection from the first dropdown box, which will contain the titles of the rows, and then make a selection from a second dropdown box, which will contain the titles of the columns. Once the selections have been made, the function then needs to output the value for the specific row and column selected.
I thought I had created an array that would work but, sadly no. I have 6 rows and 6 columns in my data table.
Also, is there a JQuery or Javascript alternative?
Just looking for a few pointers to get me on my way.
Thanks in advance,
Micanio
You could either do this on the server-side or through JS.
JS: Have the script update a hidden form field with the value using the onChange() event of the drop downs. Then simply grab that hidden field when the form is posted back to the server (of source always checking for valid data).
PHP: The form will provide the two values $_POST['field1'] and $_POST['field2'] (which of course you will sanitize before using). The script could define a multidimensional array that you could feed those two values into:
$finalValue = $mdArray[$SanitizedField1][$SanitizedField2];
From there just store the $finalValue however you'd like.
$data = array();
for ($i=0;$i<6;$i++) {
$data[$i] = array();
for ($j=0;$j<6;$j++)
$data[$i][$j] = rand(0,100);
}
This should create an array similar to what you have described.
You can then access it like so...
echo $data[0][3];
Your form would need two select fields, both will values 0-5 then you can take the both of them and use them to access a value in your array.
If I understand your question correctly, you need something like a user selects a drop down list. Once selected, the option populates a second list. A real world example would be a user selects on Country to fill in a form and it will populates the States drop down list.
This kind of functionality is usually done with javascript not server side php.
http://javascript.internet.com/forms/country-state-drop-down.html