Adding an extra row to a PHP array with new values - php

I have this array called $items. My CMS created this array with three products and I just did a var_dump with the results below.
array(3) { [0]=> array(11) { ["item_id"]=> string(4) "1320" ["name"]=> string(5) "ITEM_A" ["price"]=> string(6) "$5.00" }
[1]=> array(11) { ["item_id"]=> string(4) "1321" ["name"]=> string(5) "ITEM_B" ["price"]=> string(6) "$5.00" }
[2]=> array(11) { ["item_id"]=> string(4) "1323" ["name"]=> string(5) "ITEM_D" ["price"]=> string(6) "$5.00" }
}
Is there a way I can inject another item, "ITEM_C" into this array so that it's now
array(3) { [0]=> array(11) { ["item_id"]=> string(4) "1320" ["name"]=> string(5) "ITEM_A" ["price"]=> string(6) "$5.00" }
[1]=> array(11) { ["item_id"]=> string(4) "1321" ["name"]=> string(5) "ITEM_B" ["price"]=> string(6) "$5.00" }
[2]=> array(11) { ["item_id"]=> string(4) "1323" ["name"]=> string(5) "ITEM_D" ["price"]=> string(6) "$5.00" }
[3]=> array(11) { ["item_id"]=> string(4) "1322" ["name"]=> string(5) "ITEM_C" ["price"]=> string(6) "$5.00" }
}
and then sort it by "name"? I basically want to always add one new row to this array which will always have different names and then sort it by the name. When I do the foreach php command I don't want it to be in the order of ITEM_A, ITEM_B, ITEM_D, ITEM_C. It needs to be ITEM_A, ITEM_B, ITEM_C, ITEM_D.

Appending to an array in PHP is easy as $array[] :
$myArray = array(1,2,3);
$myArray[] = 4; //now array(1,2,3,4)
So to add to your existing array, first create your new array element
$element = array("item_id" => 1322, "name" => "ITEM_C", /*etc.*/);
Then add it your array
$myArray[] = $element;
As for sorting, there are various sort functions depending on your exact needs. Since you're sorting according to a given array key, you'll probably need to call usort with a given function.
function nameCompare($a, $b)
{
$a = $a["name"];
$b = $b["name"];
return strcmp($a, $b);
}
usort($myArray, 'nameCompare');

Related

How to get part of array excluding one key in multidimensional array?

I'm grouping one multidimensional array by age.
This is my code:
$mEmployees = array (
array("name"=>"Pedro", "age"=>20, "ID"=>1111),
array("name"=>"Carlos", "age"=>15, "ID"=>2222),
array("name"=>"Susana", "age"=>20, "ID"=>3333),
array("name"=>"Carmen", "age"=>19, "ID"=>4444)
);
$byAge=array();
foreach ($mEmployees as $k => $oneItem) {
$byAge[$oneItem['age']][$k] = $oneItem;
}
var_dump($byAge);
That works fine as you can see below:
output:
array(3) {
[20]=>
array(2) {
[0]=>
array(3) {
["name"]=>
string(5) "Pedro"
["age"]=>
int(20)
["ID"]=>
int(1111)
}
[2]=>
array(3) {
["name"]=>
string(6) "Susana"
["age"]=>
int(20)
["ID"]=>
int(3333)
}
}
[15]=>
array(1) {
[1]=>
array(3) {
["name"]=>
string(6) "Carlos"
["age"]=>
int(15)
["ID"]=>
int(2222)
}
}
[19]=>
array(1) {
[3]=>
array(3) {
["name"]=>
string(6) "Carmen"
["age"]=>
int(19)
["ID"]=>
int(4444)
}
}
}
But in the results, the age key is redundant. I want to remove this key in the $byAge array.
I tried with array_slice, but it's not possible to indicate one irregular offset (the key age is in middle).
How I can achieve this easily for this result?
array(3) {
[20]=>
array(2) {
[0]=>
array(3) {
["name"]=>
string(5) "Pedro"
["ID"]=>
int(1111)
}
[2]=>
array(3) {
["name"]=>
string(6) "Susana"
["ID"]=>
int(3333)
}
}
[15]=>
array(1) {
[1]=>
array(3) {
["name"]=>
string(6) "Carlos"
["ID"]=>
int(2222)
}
}
[19]=>
array(1) {
[3]=>
array(3) {
["name"]=>
string(6) "Carmen"
["ID"]=>
int(4444)
}
}
}
Cache the age value in a variable and unset from $oneItem.
foreach ($mEmployees as $k => $oneItem) {
$age = $oneItem['age'];
unset($oneItem['age']);
$byAge[$age][$k] = $oneItem;
}
Demo: https://3v4l.org/pDDn5

How to split multidimensional array into arrays based on the values - PHP

I have this array, it could look something like this:
array(756) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps5"
[1]=>
string(4) "23.5"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps4"
[1]=>
string(4) "23.5"
}
[2]=>
array(2) {
[0]=>
string(12) "joint_temps3"
[1]=>
string(2) "24"
}
[3]=>
array(2) {
[0]=>
string(12) "joint_temps2"
[1]=>
string(4) "24.5"
}
[4]=>
array(2) {
[0]=>
string(12) "joint_temps1"
[1]=>
string(2) "25"
}
[5]=>
array(2) {
[0]=>
string(12) "joint_temps0"
[1]=>
string(4) "25.5"
}
[6]=>
array(2) {
[0]=>
string(12) "joint_temps5"
[1]=>
string(4) "23.5"
}
[7]=>
array(2) {
[0]=>
string(12) "joint_temps4"
[1]=>
string(4) "23.5"
}
[8]=>
array(2) {
[0]=>
string(12) "joint_temps3"
[1]=>
string(2) "24"
}
[9]=>
array(2) {
[0]=>
string(12) "joint_temps2"
[1]=>
string(4) "24.5"
}
[10]=>
array(2) {
[0]=>
string(12) "joint_temps1"
[1]=>
string(2) "25"
}
[11]=>
array(2) {
[0]=>
string(12) "joint_temps0"
[1]=>
string(4) "25.5"
}
etc...};
How would i go about looping thru and splitting it up into arrays based on the value in the inner arrays[0] ex: "joint_temps5".
I have tested quite a few things but without success. My problem mainly is i dont know what might be in the string in the arrays.
I would like to end up with arrays like:
$array1[] = array(x_amount){
[0]=>
array(2) {
[0]=>
string(12) "joint_temps5"
[1]=>
string(4) "23.5"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps5"
[1]=>
string(4) "23.5"
}
}
$array2[] = array(x_amount){
[0]=>
array(2) {
[0]=>
string(12) "joint_temps4"
[1]=>
string(4) "23.5"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps4"
[1]=>
string(4) "23.5"
}
}
}
etc.
I would recommend to create a new array from your input array, using the value as an index of the array to be created, like so:
// test-set: input array is $a
$a[0] = array("joint_temps5","23.5");
$a[1] = array("joint_temps3","24");
$a[2] = array("joint_temps2","24.5");
$a[3] = array("joint_temps1","25");
$a[4] = array("joint_temps0","25.5");
$a[5] = array("joint_temps5","23.5");
$a[6] = array("joint_temps4","23.5");
$a[7] = array("joint_temps3","24");
$a[8] = array("joint_temps2","24.5");
$a[9] = array("joint_temps1","25");
foreach($a as $key => $value){
$b[$value[0]][] = $value; // *Explained below
}
*"Explained below": $a is the source array, $b is the newly created array.
$b[$value[0]][] means it wil create a new element for array $b[$value[0]]. And $value[0] will be substituted by the first value in the element of $a that the foreach loop hits.
Example: the first element of $a is this array: array("joint_temps5","23.5"). So in the foreach loop, the text "joint_temps5" ($value[0] in the foreach) will be used as a key/index to create a new element for array $b. The [] means that with every new execution of this line, a new element, with that key value $value[0], will be added.
It will result in:
array(6) {
["joint_temps5"]=>
array(2) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps5"
[1]=>
string(4) "23.5"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps5"
[1]=>
string(4) "23.5"
}
}
["joint_temps3"]=>
array(2) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps3"
[1]=>
string(2) "24"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps3"
[1]=>
string(2) "24"
}
}
["joint_temps2"]=>
array(2) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps2"
[1]=>
string(4) "24.5"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps2"
[1]=>
string(4) "24.5"
}
}
["joint_temps1"]=>
array(2) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps1"
[1]=>
string(2) "25"
}
[1]=>
array(2) {
[0]=>
string(12) "joint_temps1"
[1]=>
string(2) "25"
}
}
["joint_temps0"]=>
array(1) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps0"
[1]=>
string(4) "25.5"
}
}
["joint_temps4"]=>
array(1) {
[0]=>
array(2) {
[0]=>
string(12) "joint_temps4"
[1]=>
string(4) "23.5"
}
}
}
You could loop through your array, and populate a new array using the string as a key, so something like:
foreach ($array as $working_array) {
$new_array[$working_array[0]][] = $working_array[1]; }
Which would give you an array something like :
$new_array["joint_temps5"]=> array(2) {
[0]=> "23.5"
[1]=> "23.5"}
If you needed to you could then parse that into an array in the format you desire quite easily.

Extract value from an array of array in PHP

I have a form and I serialised it to send it to PHP (AJAX) :
var dataString = $('#form_filtre').serializeArray();
I would like to extract in PHP value where names is "ou" :
array(1) {
["form_serialize"]=>
array(6) {
[0]=>
array(2) {
["name"]=>
string(3) "ctr"
["value"]=>
string(6) "maison"
}
[1]=>
array(2) {
["name"]=>
string(6) "action"
["value"]=>
string(17) "readHomesLocation"
}
[2]=>
array(2) {
["name"]=>
string(2) "ou"
["value"]=>
string(1) "8"
}
[3]=>
array(2) {
["name"]=>
string(2) "ou"
["value"]=>
string(1) "6"
}
[4]=>
array(2) {
["name"]=>
string(5) "quand"
["value"]=>
string(0) ""
}
[5]=>
array(2) {
["name"]=>
string(3) "max"
["value"]=>
string(3) "500"
}
}
}
I would like to extrat 6 and 8.
The problem, is that I don't know in advance how many "ou" I will have.
It can be from 0 to n
Seems like an easy approach would be to have PHP unserialize the array, then iterate over it with a foreach loop like this:
foreach($array as $index => $subArray) {
foreach($subArray as $key => $val) {
if ($key == "ou") {
$ouArray[$index] = $val;
}
}
}
(where $array, obviously, is your unserialized array)
You could also just use $ouArray[] = $val, if you don't care which element the ou belonged to.

PHP, stdClass, select elements contains specifed element

I have an stClass object like this:
object(stdClass)#2 (6) {
[0]=>
object(stdClass)#44 (2) {
["uid"]=>
int(3232)
["type"]=>
string(7) "sibling"
}
[1]=>
object(stdClass)#43 (2) {
["uid"]=>
int(32323)
["type"]=>
string(7) "sibling"
}
[2]=>
object(stdClass)#42 (2) {
["uid"]=>
int(3213)
["type"]=>
string(10) "grandchild"
}
[3]=>
object(stdClass)#41 (3) {
["uid"]=>
int(-680411188)
["type"]=>
string(6) "parent"
}
[4]=>
object(stdClass)#40 (3) {
["uid"]=>
int(-580189276)
["type"]=>
string(6) "parent"
}
[5]=>
object(stdClass)#39 (2) {
["uid"]=>
int(3213)
["type"]=>
string(7) "sibling"
}
}
How can I get elements with specified value of type element?
For example, if I select "parent", I wanna get this:
object(stdClass)#2 (6) {
[3]=>
object(stdClass)#41 (3) {
["uid"]=>
int(-680411188)
["type"]=>
string(6) "parent"
}
[4]=>
object(stdClass)#40 (3) {
["uid"]=>
int(-580189276)
["type"]=>
string(6) "parent"
}
}
I know, how to write it with "foreach" and "if", but I hope that there is another way. Thanks
Your outer object is in fact, an array in disguise. You can convert it to a real array by typecasting:
$arr = (array)$obj;
Then you can use:
$filtered = array_filter(
$arr,
function($item) {
return $item->type == 'parent';
}
);
to get an array that contains only the objects you need.

Is there a function to combine these arrays in php?

Given arrays 'a1' and 'b1' how may they be combined them to produce the final array? Basically replacing the value within 'a1' with the array data for the matching value within 'b1'. I guess the question would be if there is a function that can do this that I'm not seeing.
$a1 = array('id1'=>array('a'=>'444-444',
'b'=>'222-222',
'c'=>'111-111'),
'id2'=>array('a'=>'888-888',
'b'=>'666-666',
'c'=>'555-555')
);
$b1 = array('222-222'=>array('first'=>array('9999',
'dddd',
'yyyy'),
'second'=>'mmgghh'
),
'666-666'=>array('first'=>array('bbbb',
'cccc',
'7777'),
'second'=>'ffffgggg'
)
);
Desired combination:
array(2) {
["id1"]=>
array(3) {
["a"]=>
string(7) "444-444"
["b"]=>
array(1) {
["222-222"]=>
array(2) {
["first"]=>
array(3) {
[0]=>
string(4) "9999"
[1]=>
string(4) "dddd"
[2]=>
string(4) "yyyy"
}
["second"]=>
string(6) "mmgghh"
}
}
["c"]=>
string(7) "111-111"
}
["id2"]=>
array(3) {
["a"]=>
string(7) "888-888"
["b"]=>
array(1) {
["666-666"]=>
array(2) {
["first"]=>
array(3) {
[0]=>
string(4) "bbbb"
[1]=>
string(4) "cccc"
[2]=>
string(4) "7777"
}
["second"]=>
string(6) "ffffgggg"
}
}
["c"]=>
string(7) "555-555"
}
}
array_walk_recursive($a1,function(&$value,$key,$addin){
if(is_scalar($value) && isset($addin[$value])){
$value = array($value=>$addin[$value]);
}
},$b1);

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