I have the following perl code in where I have a perl structure as follows:
`
use Data::Dumper;
my %data = (
'status' => 200,
'message' => '',
'response' => {
'name' => 'John Smith',
'id' => '1abc579',
'ibge' => '3304557',
'uf' => 'XY',
'status' => bless( do{\(my $o = 1)}, 'JSON::PP::Boolean' )
}
);
my $resp = $data{'status'};
print "Response is $resp \n";
print Dumper(%data->{'response'});
Getting the status field works, however If I try something like this:
my $resp = $data{'response'}
I get Response is HASH(0x8b6640)
So I'm wondering if there's a way I can extract all the data of the 'response' field on the same way I can do it for 'status' without getting that HASH...
I've tried all sort of combinations when accessing the data, however I'm still getting the HASH back when I try to get the content of 'response'
$data{'response'} is the correct way to access that field on a hash called %data. It's returning a hash reference, which prints out by default in the (relatively unhelpful) HASH(0x8b6640) syntax you've seen. But if you pass that reference to Dumper, it'll show you everything.
print Dumper($data{'response'});
to actually access those subfields, you need to dereference, which is done with an indirection -> operation.
print $data{'response'}->{'name'}
The first access doesn't need the -> because you're accessing a field on a hash variable (i.e. a variable with the % sigil). The second one does because you're dereferencing a reference, which, at least in spirit, has the $ sigil like other scalars.
Thanks for your posts. I fixed the code as follows:
use Data::Dumper;
my %data = (
'status' => 200,
'message' => '',
'response' => {
'name' => 'John Smith',
'id' => '1abc579',
'ibge' => '3304557',
'uf' => 'XY',
'status' => bless( do{\(my $o = 1)}, 'JSON::PP::Boolean' )
}
);
my $resp = $data{'response'};
print Dumper($resp);
Now it works like a charm, and I'm able to get the data I want.
I have a CSV file, which contains data like below:
I want parse data from above csv file and store it in a hash initially. So my hash dumper %hash would look like this:
$VAR1 = {
'1' => {
'Name' => 'Name1',
'Time' => '7/2/2020 11:00'
'Cell' => 'NCell1',
'PMR' => '1001',
'ISD' => 'ISDVAL1',
'PCO' => 'PCOVAL1'
},
'2' => {
'Name' => 'Name2',
'Time' => '7/3/2020 13:10',
'Cell' => 'NCell2',
'PMR' => '1002',
'PCO' => 'PCOVAL2',
'MKR' => 'MKRVAL2',
'STD' => 'STDVAL2'
},
'3' => {
'Name' => 'Name3',
'Time' => '7/4/2020 20:15',
'Cell' => 'NCell3',
'PMR' => '1003',
'ISD' => 'ISDVAL3',
'MKR' => 'MKRVAL3'
},
};
Script is below:
#!/usr/bin/perl
use strict;
use warnings;
use Text::CSV;
use Data::Dumper;
my %hash;
my $csv = Text::CSV->new ({ binary => 1, auto_diag => 1 });
open my $fh, "<:encoding(utf8)", "input_file.csv" or die "input_file.csv: $!";
while (my $row = $csv->getline ($fh)) {
my #fields = #$row;
$hash{$fields[0]}{"Time"} = $fields[1];
$hash{$fields[0]}{"Name"} = $fields[2];
$hash{$fields[0]}{"Cell"} = $fields[3];
}
close $fh;
print Dumper(\%hash);
Here id is an key element in each line and based on the data value each data should be stored in respective names of an id.
Problem here is, till column D (Cell) I am able to parse data in above script and there after column D there won't be a header line and it will be like column E will act as header and column F is the value for the particular header's particular id. Similar condition goes to rest of the data values until end. And in middle we can see some values also will be missing. For example there is No MKR value for id 1.
How can I parse these data and store it in hash, so that my hash would look like above. TIA.
Changes made to the script posted was to remove the header line so that it does not form part of the result and added a for loop to set the reset of the data.
Test Data Used:
id,Time,Name,Cell,,,,,
1,7/2/2020 11:00,Name1,NCell1,PMR,1001,ISD,ISDVAL1
2,7/3/2020 13:10,Name2,NCell3,PMR,1002,PCO,PCOVAL2,MKR,MKRVAL2
Updated Script: (This was the first version suggest using the improved version in the edit)
#!/usr/bin/perl
use strict;
use warnings;
use Text::CSV;
use Data::Dumper;
my %hash;
my $csv = Text::CSV->new ({ binary => 1, auto_diag => 1 });
open my $fh, "<:encoding(utf8)", "input_file.csv" or die "input_file.csv: $!";
my $headers = $csv->getline ($fh);
while (my $row = $csv->getline ($fh)) {
$hash{$row->[0]}{Time} = $row->[1];
$hash{$row->[0]}{Name} = $row->[2];
$hash{$row->[0]}{Cell} = $row->[3];
for (my $i = 4; $i < scalar (#{$row}); $i += 2) {
$hash{$row->[0]}{$row->[$i]} = $row->[$i + 1];
}
}
close $fh;
print Dumper(\%hash);
Output:
$VAR1 = {
'2' => {
'MKR' => 'MKRVAL2',
'Name' => 'Name2',
'PCO' => 'PCOVAL2',
'Cell' => 'NCell3',
'Time' => '7/3/2020 13:10',
'PMR' => '1002'
},
'1' => {
'Name' => 'Name1',
'ISD' => 'ISDVAL1',
'Cell' => 'NCell1',
'Time' => '7/2/2020 11:00',
'PMR' => '1001'
}
};
Edit:
Thanks to comment from #choroba here is an improved version of the script setting the hash with all the additional row values first and then adding the first values Time Name Cell using the header line read from the file.
#!/usr/bin/perl
use strict;
use warnings;
use Text::CSV;
use Data::Dumper;
my %hash;
my $csv = Text::CSV->new ({ binary => 1, auto_diag => 1 });
open my $fh, "<:encoding(utf8)", "input_file.csv" or die "input_file.csv: $!";
my $headers = $csv->getline ($fh);
while (my $row = $csv->getline ($fh)) {
$hash{$row->[0]} = { #$row[4 .. $#$row] };
#{$hash{$row->[0]}}{#$headers[1, 2, 3]} = #$row[1, 2, 3];
}
close $fh;
print Dumper(\%hash);
There are some Text::CSV features that you can use to make this a bit simpler. There's a lot of readability to gain by removing density in the loop.
First, you can set the column names for missing header values. I don't know what those columns represent so I've called them K1, V1, and so on. You can substitute better names for them. How I do that isn't as important is that I do that. I'm using v5.26 because I'm using postfix dereferencing:
use v5.26;
my $headers = $csv->getline($fh);
my #kv_range = 1 .. 4;
$headers->#[4..11] = map { ("K$_", "V$_") } #kv_range;
$csv->column_names( $headers );
If I knew the names, I could use those instead of numbers. I merely change the stuff in #kv_range:
my #kv_range = qw(machine test regression ice_cream);
And, when the data file changes, I handle all of that here. When it's outside the loop, there's much less to miss.
Now that I have all columns named, I use getline_hr to get back a hash reference of the line. The keys are the column names I just set. This does a lot of the work for you already. You have to handle the pairs at the end, but that's going to be easy too:
my %Grand;
while( my $row = $csv->getline_hr($fh) ) {
foreach ( #kv_range ) {
no warnings 'uninitialized';
$row->{ delete $row->{"K$_"} } = delete $row->{"V$_"};
}
$Grand{ $row->{id} } = $row;
delete $row->#{ 'id', '' };
}
Now to handle the pairs at the end: I want to take the value in the column K1 and make it a key, then take the value in V1 and make that the value. At the same time, I need to remove those K1 and V1 columns. delete has the nice behavior in that it returns the value for the key you deleted. This way doesn't require any sort of pointer math or knowledge about positions. Those things might change and I've handled all of that before I got this far:
$row->{ delete $row->{"K$_"} } = delete $row->{"V$_"};
You could also do this in a couple steps if that statement is too much for you:
my( $key, $value ) = delete $row->#{ "K$_", "V$_" };
$row->{$key} = $value;
I'd leave the id column in there, but if you don't want it, get rid of it. Also, that step with the deletes might have made some empty string keys for the cells that had no values. Instead of guarding against that and making the foreach more complicated, I let it happen and get rid of it at the end:
delete $row->#{ 'id', '' };
Altogether, it looks like this. It's doing the same thing as Piet Bosch's answer, but I've pushed a lot of the complexity back into the module as well as doing a little pre-loop work:
use v5.26;
use strict;
use warnings;
use Data::Dumper;
use Text::CSV;
my $csv = Text::CSV->new({
binary => 1,
auto_diag => 1
});
open my $fh, "<:encoding(utf8)", "input_file.csv"
or die "input_file.csv: $!";
my $headers = $csv->getline($fh);
my #kv_range = 1 .. 4;
$headers->#[4..11] = map { ("K$_", "V$_") } #kv_range;
$csv->column_names( $headers );
my %Grand;
while( my $row = $csv->getline_hr($fh) ) {
foreach ( #kv_range ) {
no warnings 'uninitialized';
$row->{ delete $row->{"K$_"} } = delete $row->{"V$_"};
}
$Grand{ $row->{id} } = $row;
delete $row->#{ 'id', '' };
}
say Dumper( \%Grand );
And the output looks like this:
$VAR1 = {
'2' => {
'PMR' => '1002',
'PCO' => 'PCOVAL2',
'MKR' => 'MKRVAL2',
'Name' => 'Name2',
'Time' => '7/3/2020 13:10',
'Cell' => 'NCell3'
},
'1' => {
'Cell' => 'NCell1',
'Time' => '7/2/2020 11:00',
'ISD' => 'ISDVAL1',
'PMR' => '1001',
'Name' => 'Name1'
}
};
I have a column in my db for saving a users' settings. This is what the data structure looks like:
{"email":{"subscriptions":"{\"Foo\":true,\"Bar\":false}"}}
I am using a vue toggle to change the status of each property (true/false). Everything seems to be working, however when I save, I am wiping out the structure and saving the updated values like this:
{\"Foo\":true,\"Bar\":false}"}
php
$user = auth()->user();
$array = json_decode($user->preferences['email']['subscriptions'], true);
dd($array);
The above gets me:
array:2 [
"Foo" => true
"Bar" => false
]
So far so good...
$preferences = array_merge($array, $request->all());
dd($preferences);
Gets me:
array:2 [
"Foo" => true
"Bar" => true
]
Great - the values are now picking up the values passed in from the axios request. Next up; update the user's data:
$user->update(compact('preferences'));
Now my data looks like this:
{"Foo":true,"Bar":true}
The values are no-longer nested; I've wiped out email and subscriptions.
I've tried this:
$user->update([$user->preferences['email']['subscriptions'] => json_encode($preferences)]);
But it doesn't seem to save the data. How can I use the $preferences variable to update the data - and keep the data nested correctly?
You can create an array with the structure you want the resulting json to have. So, for this json:
{
"email":{
"subscriptions":{
"Foo":true,
"Bar":false
}
}
}
you can create an array like this:
[
'email' => [
'subscriptions' => [
'Foo' => true,
'Bar' => false
]
]
]
an then, encode the entire structure:
json_encode([
'email' => [
'subscriptions' => [
'Foo' => true,
'Bar' => false
]
]
]);
So, in your code, as you already have the nested array in the $preferences variable, I think this should work:
$json_preferences = json_encode([
'email' => [
'subscriptions' => $preferences
]
]);
Then you can update the user 'preferences' attribute (just for example):
User::where('id', auth()->user()->id)->update(['preferences' => $json_preferences]);
or
$user = auth()->user();
$user->preferences = $json_preferences;
$user->save();
i was wondering how can i insert an array of data into one table by using of 2 array like this in laravel model
$attributes =array('title','description');
$options =array('test','blahblahblah');
the table would be like
title test
description blahblahblah
so far i reach to this
$values = array(
array($attributes => $options),
);
but it says
Illegal array key type array less
Arrays and objects can not be used as array keys.
any way i try has different error
but the most of the errors is illegal offset type
do you have any suggestion?
You can combine both arrays with array_combine. It will take an array for the keys and one array for the values.
$attributes = array('title', 'description');
$options = array('test', 'blahblahblah');
$values = array_combine($attributes, $options);
Result:
array:2 [▼
"title" => "test"
"description" => "blahblahblah"
]
You can try this:
First you have to combine array as following:
$tableFields = array('title', 'description');
$fieldValues = array('test', 'blahblahblah');
$newArr = array_combine($tableFields, $fieldValues);
Output :
array:2 [▼
"title" => "test"
"description" => "blahblahblah"
]
Then insert into table as following:
DB::table('table_name')->insert($newArr);
I made and fql query and saved it into an array
$resultposts = $facebook->api(array('method' => 'fql.query',
'query' => $fqlQueryposts));
To extract the name value I use this:
echo $resultposts['first_name'];
But I have problems with "media" array, that it's into "attachment" array. This is the structure: $resultposts>attachment>media>
I should extract "type", "src" and "href" values from "media" array.
I tried in this way:
$resultposts['attachment']['media']['type'];
But it doesn't work. The error is "undefined index: type".
What can I do? Thanks
This post is a little old but as I stumbled upon it while searching for the very same question and found the answer I'll share it for others.
Using PHP SDK (3.11)
$attachment = $facebook->api(array('method' => 'fql.query', 'query' => 'SELECT attachment FROM stream WHERE post_id = "'.$poid.'"'));
foreach($attachment as $attach)
{
foreach($attach as $i => $o)
{
echo $o['name'];
foreach($o['media'] as $t => $y)
{
echo $y['type'];
}
}
}