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I have array like below:
$arr=[["id"=>"001","name"=>"Hello","pict"=>"hello.jpg"],["id"=>"002","name"=>"Abc","pict"=>"abc.jpg"]];
i want to add one more element to array $arr by "link"=>"uploads/hello.jpg"
My expected result:
$arr=[["id"=>"001","name"=>"Hello","pict"=>"hello.jpg","link"=>"uploads/hello.jpg"],["id"=>"002","name"=>"Abc","pict"=>"abc.jpg","link"=>"uploads/abc.jpg"]];
Any solution for this thank.
You can iterate over the array using foreach, passing a reference into the loop to allow the values to be modified directly:
$arr=[["id"=>"001","name"=>"Hello","pict"=>"hello.jpg"],["id"=>"002","name"=>"Abc","pict"=>"abc.jpg"]];
foreach ($arr as &$a) {
$a['link'] = 'uploads/' . $a['pict'];
}
print_r($arr);
Output:
Array
(
[0] => Array
(
[id] => 001
[name] => Hello
[pict] => hello.jpg
[link] => uploads/hello.jpg
)
[1] => Array
(
[id] => 002
[name] => Abc
[pict] => abc.jpg
[link] => uploads/abc.jpg
)
)
Demo on 3v4l.org
You can iterate over each element in the array and set it that way.
for ($i = 0; $i < count($arr); i++) {
$arr[$i]['link'] = 'uploads/'.$arr[$i]['pict'];
}
foreach($arr as $key => $value){
$arr[$key]['link'] = "uploads/".$value['pict'];
}
Use the foreach loop to modify the original array. The $key value is used to refer to each index in the array.
Related
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I confused how to make depth from basic array.
$array = array('736', '827', '831');
With foreach loop, I want final result like this:
Array
(
[736] => Array
(
[827] => Array
(
[831] => Array
(
)
)
)
)
Just like you want them, do this:
array
(
736 => array
(
827 => array
(
831 => array
(
)
)
)
)
or did I misunderstand the question?
using a foreach backwards:
$arr=array(831,827,736);
$newref=array();
foreach($arr as $el)
{
$newref=array($el=>$newref);
}
for reversing an array: $arr=array_reverse($arr);
Possibly not the most efficient, but something like this should do it.
function nestedArray($array) {
$newArray = [];
$pointer = &$newArray;
foreach($array as $value) {
$pointer[$value] = [];
$pointer = &$pointer[$value];
}
return $newArray;
}
$arr = [736, 827, 831];
var_dump(nestedArray($arr));
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I have a database table that would return an array something like this
$roles['admin'] = 'app1,app2,app3';
$roles['moderator'] = 'app2,app3';
Now I want to traverse this array to show in my view, But instead of showing all apps inside each role, i would like to show all roles inside each app.
So ideally i would like the above array to become this
$apps['app1'] = 'admin';
$apps['app2'] = 'admin,moderator';
$apps['app3'] = 'admin,moderator';
I have been trying to solve this for 2 hours now, but for some reason I can't find an efficient way of doing this.
The following will traverse your array and load it into the appropriate array. It works by going through each part of the array and traversing it.
<?php
$apps = array();
foreach($roles as $key1 => $value1){
$parts = explode(',', $value1);
foreach($parts as $key2 => $value2){
$apps[$value2] .= (strlen($apps[$value2])>0)?",":"").$key1;
}
}
?>
You can map one array to the other by using array_reduce, array_keys and explode to turn your CSV values into arrays
$apps = array_reduce(array_keys($roles), function($apps, $key) use ($roles) {
foreach (explode(',', $roles[$key]) as $app) $apps[$app][] = $key;
return $apps;
}, []);
Note that the result is slightly different to what you wanted in that the values are themselves arrays instead of comma separated strings.
Array
(
[app1] => Array
(
[0] => admin
)
[app2] => Array
(
[0] => admin
[1] => moderator
)
[app3] => Array
(
[0] => admin
[1] => moderator
)
)
If you really need CSV values, add this
$apps = array_map(function($list) {
return implode(',', $list);
}, $apps);
which produces
Array
(
[app1] => admin
[app2] => admin,moderator
[app3] => admin,moderator
)
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I've got an unusual problem, but I'm fairly certain it's not impossible to solve.
Consider the two arrays below.
Array ( [0] => 1 [1] => 2 [2] => 2 )
Array ( [0] => 879 [1] => 482 [2] => 1616 )
I need to add the values in second array where the values in the first array are the same so that I would end up with...
Array ( [0] => 879 [1] => 2098 )
How might this be accomplished? Thanks in advance!
This isn't a full-proof way of completing this task, but it achieves the goal you desire. What's happening here is we're looping through your first array (the keys) and using the set values of these keys to add the values from the second array:
$new = array();
foreach($keys as $i => $key) {
if(!isset($new[$key])) { $new[$key] = 0; }
$new[$key] += $vals[$i];
}
Example/Demo
Notes
$keys being your first array: $keys = array(1, 2, 2);
$vals being your second array: array (879, 482, 1616);
As I stated, this isn't full-proof. You will need to modify it to ensure integrity, but it is a start that shows the flow of how you can go about doing what you require.
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I have array:
Array
(
[0] => #EX-X
[1] => #EX-DURATION:5
[2] => X-MEDIA
[3] => #EXDATE-TIME
[4] => YEAR
[5] => color
[6] => #EX-DURATION:10
)
How to remove everything that begins with #EX in array?
Can't figure out!
Final result should be:
Array
(
[0] => X-MEDIA
[1] => YEAR
[2] => color
)
With array_filter :
$arrayFiltered = array_filter($yourArray, function($val) {
return strpos($val, '#EX') !== 0;
});
$resultArray = array_values($arrayFiltered);
A simple loop with a check for #EX at the start of each value.
$array = array( ... ); //array with "dirty" values
$new_array = array();
foreach($array AS $val)
{
if(substr($val, 0, 3) != '#EX')
{
$new_array[] = $val;
}
}
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I am trying to loop over the array called $res, but I want to obtain only the values 6 and 2, for each name it is an id, is its with a foreach o just a normal for? I am confused because the array has two arrays insiden and it increments if I add a new name like 'Joe'
$arrayDirectory = array('Nick', 'Alex');
$res = array();
foreach($arrayDirectory as $user) {
$res[] = $obj->obtainID($user);
}
echo print_r($res);
Array ( [0] => Array ( [0] => Array ( [id_usuario] => 6 [0] => 6 ) ) [1] => Array ( [0] => Array ( [id_usuario] => 2 [0] => 2 ) ) ) 1
foreach ($res as $item) {
echo $item[0][0];
}
Or
foreach ($res as $item) {
echo $item[0]['id_usuario'];
}
Depending on what you are looking for
With PHP5.3 you can also use array_map() with a lambda
$idUsarios = array_map(function ($item) {
return $item[0]['id_usario'];
}, $res);
Change
$res[] = $obj->obtainID($user);
to
$user = $obj->obtainID($user);
$res[] = $user[0]['id_usuario'];