I'm venturing into very uncharted territory (for me) and I would appreciate some input. I've been through S/O but any references to these errors are for what appear to be different scenarios.
In essence, I have a pretty standard mySQL query that creates an associative array of approximately 70 child arrays with 7 items within each array. I then use 'json_encode' to make it ready for use in a grid. A print_r lists everything correctly with all data intact (see below).
Array
(
[0] => Array
(
[c_ksa] => 1
[urgency] => 3
[position_id] => 1000115
[position_root] => Maintenance C&M
[position_area] => Construction West
[positionmgr_uid] => dale.jones#gmail.com
[last_name] => Jones
)
[1] => Array
(
[c_ksa] => 1
[urgency] => 1
[position_id] => 1000172
[position_root] => Creative C&M
[position_area] => Design/Build
[positionmgr_uid] => anita.smith#gmail.com
[last_name] => Smith
)
However, in Dev Tools I'm getting the two errors:
Cannot read property 'parent' of undefined
and
Cannot set property '_node' of null
I have no idea where to start looking. Are these data type errors? Is this 'object' related? I don't have much experience in this area - but I'm willing to learn if someone can point me in the right direction. Thank you!
After much more exploring, I found the problem. In my application I have a table containing a column listing the managers in an org who sponsor an employee into a specific program. Because a manager can sponsor more than one employee, there will be repeats (duplicates) in this column. I had set the 'id' in my SQL query ("AS id") to that column so when I tried to use the resulting array while referencing the 'id' there were conflicts due to the duplicates. When this was fixed, all errors were resolved. Lesson learned ...
(My first post, I apologise for any mistakes)
I'm working with a small set of data in CSV files, which I need to read, process, and then export as a text file.
The format of the CSV data is:
REGO,STATUS,SHIFT,LOCATION,LOADED
CCA4110,StatusON,5:43,Brisbane,1
CCA4112,StatusON,5:44,Syndey,0
CCA4118,StatusON,6:11,Melbourne,1
I want to be able to take each line after the header row, and check
a) if the 'LOADED' value equals 0 or 1 (skip to next row if 1).
b) If 'LOADED' is 0, then check if the 'REGO' value matches a pre-defined list of 'REGO' values.
c) If a match, change the 'SHIFT' time.
d) If no match, move on to next row.
After that, I want to export all of the rows, with only the 'REGO' and 'SHIFT' values, to look like:
CCA4110,5:43
CCA4112,5:33
...
Because this feels a little complex to me, I'm having trouble visualising the best way to approach this problem. I was wondering if someone could help me think about this in a way that isn't just hacking together a dozen nested for loops.
Thanks very much,
Liam
Edit: a question about checking multiple conditions:
Say I have two CSV files:
List_to_Change.csv
REGO,STATUS,SHIFT,LOCATION,LOADED
CCA2420,StatusOn,11:24,BRISBANE,1
CCA2744,StatusOn,4:00,SYDNEY,1
CCA2009,StatusOn,4:00,MELBOURNE,0
List_to_Compare.csv
REGO,CORRECT_SHIFT
CCA2420,6:00
CCA2660,6:00
CCA2009,5:30
An algorithm:
1. Check value in 'List_to_Check.csv' 'LOADED' column
A. If value equals '0' go to step 2.
B. If value equals '1' skip this row and go to next.
2. Check if 'REGO' value in 'List_to_Check.csv' shows up in 'List_to_Compare.csv'
A. If true go to step 3.
B. If false skip this row and go to next.
3. Change 'SHIFT' value in 'List_to_Change.csv' with value shown in 'List_to_Compare.csv'
4. Stringify each row that was changed and export to text file.
My advice would be to split the work flow in to three steps:
Parse all rows to javascript objects
Perform the logic on the array of objects
Stringify the objects back to CSV
// This creates an object based on an order of columns:
const Entry = ([rego, status, shift, location, loaded]) =>
({ rego, status, shift, location, loaded });
// Which entries are we interested in?
const shouldHandleEntry = ({ loaded }) => loaded === "1";
// How do we update those entries?
const updateEntry = entry => ({
...entry,
shift: ["CCA4118"].includes(entry.rego)
? "5:33"
: entry.shift
});
// What do we export?
const exportEntry = ({ rego, shift }) => `${rego},${shift}`;
// Chain the steps to create a new table:
console.log(
csvBody(getCSV())
.map(Entry)
.filter(shouldHandleEntry)
.map(updateEntry)
.map(exportEntry)
.join("\n")
)
// (This needs work if you're using it for production code)
function csvBody(csvString) {
return csvString
.split("\n")
.map(line => line.trim().split(","))
.slice(1);
};
function getCSV() { return `REGO,STATUS,SHIFT,LOCATION,LOADED
CCA4110,StatusON,5:43,Brisbane,1
CCA4112,StatusON,5:44,Sydney,0
CCA4118,StatusON,6:11,Melbourne,1`; }
This question already has answers here:
INSERT array - PDO
(2 answers)
Binding values from arrays?
(3 answers)
Closed 5 years ago.
I have tried both the links but I don't get the expected variables content in $fields and $newdata
** This question has developed in a new one here **
PHP how to extract keys names and values from associative array for mysql query (as explained I'm newbie and it took some work to get the question asked in the right way)
so I kindly print here some var_dump and cast to kindly ask your support.
For simplicity in my learning experiment, I'm working with a dummy table of just 5 fields, as you see they are: selected, user_id, user_name, user_company and user_email.
Finally I have inserted just 2 rows of values.
Using this code
$Arr = (array)$data;
print_r ( $Arr );
I can see this output
Array (
[0] => Array ( [selected] => [user_id] => 3 [user_name] => nome3 [user_company] => azien3 [user_email] => email3 )
[1] => Array ( [selected] => 1 [user_id] => 6 [user_name] => nome6 [user_company] => azien6 [user_email] => email6 )
)
next I try to apply the code of your links
24 $fields = implode(",", array_keys($Arr));
25 $newdata = "'" . implode("','", $Arr) . "'";
26
27 var_dump($fields);
28 echo "<br><br>";
29 var_dump($newdata);
But something is wrong in my interpreteation or in my code , because the output is
Notice: Array to string conversion in D:\xampp\htdocs\ajax-json\post.php on line 25
Notice: Array to string conversion in D:\xampp\htdocs\ajax-json\post.php on line 25
string(3) "0,1"
string(15) "'Array','Array'"
can you kindly point out what's wrong?
e.g. is my array properly formed?
ORIGINAL QUESTION
I'm newbie and after further readings I got the point and hopefully now my question could result more simple. Thank you for any hint.
I have a bidimensional array since its records are coming from an html table.
The collection made on the html side generates an associative array so each row is like in the following example where, also, you can see, the keys are many
[item] => Array (
[0] => Array (
[unit] => "car"
[qty] => 3
[description] => "Description 1"
....
[key47] => "thin"
)
[1] => Array (
[unit] => "bike"
[qty] => 74
[description] => "Description 2"
....
[key47] => "large"
)
)
The mysql table name where I want to insert the items is named items_table
"unit" "qty" and "description" and all the remaining keys (total 47) are exactly the same names of the items_table columns
When on the php side I'd like to have a sort of automatic query generation maybe with PDO that would pick the columns names from the inner array keys names and will insert the corresponding key value in the correct column.
The goal is to avoid creating such a awkward and extremely long query.
Preferred method would be with PDO, avoid binding 47 keys.
This sort of automatism is also useful because in the future columns in the mysql table may being added and or removed and or renamed, so I'd like to forget about the query thinking only about properly editing the html table (on that side the array is already automatically generated with some javascript)
Do you think is possible to do this?
If yes how to?
Does this still need some foreach loop?
Thank you for helping
E.g.:
core_table
id* unit quantity description
1 car 3 Description 1
2 bike 74 Description 2
adjunct_table
core_id* meta_key* meta_value
1 47 Description of key n.47 first row
2 47 Description of key n.47 second row
* = (component of) PRIMARY KEY
I have an array $item in my Yii2 project, and I'm using dual listbox for elimination useless headers, I got headers from an imported Excel file.
The dual listbox has 2 box, left-box (Unselected) and right-box(Selected).
At the firsttime, all headers from $item showed in left-box, and then user drag/move the headers that want to use from left-box to right-box. When the headers moved to right-box, each headers has data-sortindex as an id.
So the the unselected headers in left-box doesn't has a data-sortindex as id.
Can anybody tell how to remove all the unselected headers from the array?
Array
Array
{
[0] => Array
{
[0] => nim
[1] => class
[2] => age
[3] => gender
[4] => address
[5] => skill
}
}
Dua listbox
From the picture above, you can see that I want to remove the class and gender from $item array when the button clicked.
I have another idea like set the selected headers to a new array. But I need the array's name still $item.
Any help would be appreciated. Thanks :)
I passing an array from Jquery(post) to php like:
[["a","b","c"],["aa:","bb","cc"]]
How to extract this array in php?
My code is:
UPDATE
$data = json_decode($_POST['data']);
print_r($data);
This code return :
Array
(
[0] => Array
(
[0] => as
[1] => as
[2] =>
)
[1] => Array
(
[0] => asas :
[1] => as
[2] => text
)
)
Instead of passing an array. You can tackle this two different ways
1) encode everything in JSON and pass it to php.
2) take everything that you need from the form and serialize it. Then explode the serialized data in your language of choice.
Passing arrays will not work the way you think it will. So it's best to just serialize the data and then do what you need. Using loops is a waste of time and CPU resources that could slow down the users experience.