I have an array that outputs like this:
1 =>
array
'quantity' => string '2' (length=1)
'total' => string '187.90' (length=6)
2 =>
array
'quantity' => string '2' (length=1)
'total' => string '2,349.90' (length=8)
I would like to loop through each array keys and retrieve the set of 3 values relating to them, something like this (which doesnt work):
foreach( $orderItems as $obj=>$quantity=>$total)
{
echo $obj;
echo $quantity;
echo $total;
}
Would someone be able to give some advice on how I would accomplish this, or even a better way for me to be going about this task. Any information relating to this, including links to tutorials that may cover this, would be greatly appreciated. Thanks!!
foreach( $orderItems as $key => $obj)
{
echo $key;
echo $obj['quantity'];
echo $obj['total'];
}
Using the above.
You need to read the docs on forEach() a little more, since your syntax and understanding of it is somewhat incorrect.
$arr = array(
array('foo' => 'bar', 'foo2', 'bar2'),
array('foo' => 'bar', 'foo2', 'bar2'),
);
foreach($arr as $sub_array) {
echo $sub_array['foo'];
echo $sub_array['bar'];
}
forEach() iteratively passes each key of the array to a variable - in the above case, $sub_array (a suitable name, since your array contains sub-arrays). So within the loop body, it's that you need to interrogate.
Related
I have two arrays, for example $session and $post with 100+ values. I will compare the $post array values with $session array. If post is different then it will be taken to result array else not.
We can try this using array_diff_assoc($post, $session) and foreach(). Which one is faster?
For profiling, Phil has suggested a great way in his reply, but I will link it here too, just in case:
Simplest way to profile a PHP script
Practically, you need to know what each approach does. in array_diff_assoc, you are returning the difference between 2 collections, after comparing the key/value couples for each element. It will then return an array that contains the entries from array1 that are not present in array2 or array3, etc.
In a for each loop, you will need to hard code the same function (assuming that's what you need). You will need to take the first element, then look for the combination in your other arrays. If it matches your requirements, you will save it into your output array, or even print it directly.
Same principles apply, but then again, it will be up to profiling to determine the faster approach. Try doing so on a large number of big arrays, as the difference isn't noticeable at smaller scales.
I'll leave this as a stub/example, please edit, or use for profiling.
<?php
$before = [
'name' => 'Bertie',
'age' => '23'
];
$after = [
'name' => 'Harold',
'age' => '23',
'occupation' => 'Bus driver'
];
function changed_1($after, $before) {
return array_diff_assoc($after, $before);
}
function changed_2($after, $before) {
$changed = [];
foreach($after as $k => $v) {
if(isset($before[$k]) && $before[$k] !== $v)
$changed[$k] = $v;
if(!isset($before[$k]))
$changed[$k] = $v;
}
return $changed;
}
var_export(changed_1($after, $before));
var_export(changed_2($after, $before));
Output:
array (
'name' => 'Harold',
'occupation' => 'Bus driver',
)array (
'name' => 'Harold',
'occupation' => 'Bus driver',
)
I have three arrays, say multiarray, valsarray, and otherarray. otherarray is a multidimensional array that supplies values to multiarray and valsarray, but besides that it is unimportant here. valsarray takes values from a subarray of each value in otherarray and multiarray takes straight values from otherarray, as demonstrated below:
foreach($otherarray as $other){
foreach($other as $sub){
$valsarray[] = $sub
}
$multiarray[] = array('Val1' => $other['Val1'], 'Val2' => $other['Val2']);
}
Now what I would like to do is append each key/value pair in valsarray to the current array entry of multiarray, to achieve a result similar to:
$multiarray = array('Val1' => $other['Val1'], 'Val2' => $other['Val2'],
'VALSARRAY_KEY1' => VALSARRAY_VALUE1, ..., 'VALSARRAY_KEYN' => VALSARRAY_VALUEN)
I have attempted to solve this using current in the following fashion:
foreach($valsarray as $key => $val){
current($multiarray)[$key] = $val;
}
But the multiarray remained unaltered. I may be misunderstanding how current works, or how to approach this problem, so any help or direction would be appreciated.
EDIT- EXAMPLE
otherarray = array(...prior array entries...,
array('Val1' => 'abc',
'Val2' => 'cde',
'Val3' => 'not important',
'Val4' => array(0 => 'subA', 1 => 'subB'),
...next array entries...);
BEFORE MERGE:
multiarray = array(...prior entries...,
array('Val1' => 'abc',
'Val2' => 'cde'));
valsarray = array(0 => 'subA', 1 => 'subB');
AFTER MERGE:
multiarray = array(...prior entries...,
array('Val1' => 'abc',
'Val2' => 'cde',
0 => 'subA',
1 => 'subB'));
So if multiarray was a regular array instead of a multidimensional one, I would do something like:
foreach($valsarray as $key => $val){
$multiarray[$key] = $val;
}
To achieve the end result.
I am not 100% sure what you are trying to accomplish a Minimal, Complete, and Verifiable example may help if I have misunderstood something.
It appears that the current() function does not work as you assume. (Or more specifically, the internal pointer.)
If you look at the example in the PHP documentation: Current(), you will see that for current($array) to change elements, you need to call next($array) or prev($array).
These function move the internal pointer of the array.
Note that in PHP 5, foreach loops use the internal pointer (and reset it when you start a loop), but in PHP 7, foreach loops do not use the internal pointer.
Anyway, here is my best guess at what could help you.
$valsarray_index = 0;
foreach ($otherarray as $other) {
$multiarray_value = array('Val1' => $other['Val1'], 'Val2' => $other['Val2']);
foreach ($other as $sub) {
$multiarray_value[$valsarray_index] = $sub;
// $multiarray_value["VALSARRAY_KEY" . $valsarray_index] = $sub;
$valsarray[] = $sub;
$valsarray_index += 1; // This stays in lockstep with the last index of $valsarray
}
$multiarray[] = $multiarray_value;
}
I am not exactly sure about what you want the final output to look like. If this produces incorrect information, then if would be helpful to provide some specific arrays for input and what you expect as output.
I'm writing a php web application where I have a nested array which looks similar to the following:
$results = array(
array(
array(
'ID' => 1,
'Name' => 'Hi'
)
),
array(
array(
'ID' => 2,
'Name' => 'Hello'
)
),
array(
array(
'ID' => 3,
'Name' => 'Hey'
)
)
);
Currently this means that when I want to use the ID field I have to call $results[0][0]['ID'] which is rather inefficient and with an array of over several hundred records becomes messy quickly. I would like to shrink the array down so that I can call $results[0]['ID'] instead.
My understanding is that a function that uses a foreach loop to iterate through each row in the array and change the format would be the best way to go about changing the format of the $results array but I am struggling to understand what to do after the foreach loop has each initial array.
Here is the code I have so far:
public function filterArray($results) {
$outputArray = array();
foreach ($results as $key => $row) {
}
return $outputArray;
}
Would anyone be able to suggest the most effective way to achieve what I am after?
Thanks :)
Simply use call_user_func_array as
$array = call_user_func_array('array_merge', $results);
print_r($array);
Demo
I have an array with in which there is another array. I need to unset a index of the sub array.
array
0 =>
array
'country_id' => string '1' (length=1)
'description' => string 'test' (length=4)
1 =>
array
'country_id' => string '2' (length=1)
'description' => string 'sel' (length=5)
2 =>
array
'country_id' => string '3' (length=1)
'description' => string 'soul' (length=5)
Now i need to unset country_id of all the three index of the master array. I am using PHP and I initially thought unset will do until i realized my array is nested.
How can I do this?
foreach ($original_array as &$element) {
unset($element['country_id']);
}
why &$element?
Because foreach (...) will perform a copy, so we need to pass the reference to the "current" element in order to unset it (and not his copy)
foreach($yourArray as &$arr)
{
unset($arr['country_id']);
}
foreach ($masterArray as &$subArray)
unset($subArray['country_id']);
The idea is that you take each sub array by reference and unset the key within that.
EDIT: another idea, just to make things interesting, would be to use the array_walk function.
array_walk($masterArray, function (&$item) { unset ($item['country_id']); });
I'm not sure that it's any more readable, and the function call will make it slower. Still, the option is there.
You need to use:
foreach ($array as &$item) {
unset($item['country_id']);
}
but after loop you should really unset reference otherwise you might get into trouble so the correct code is:
foreach ($array as &$item) {
unset($item['country_id']);
}
unset($item);
I'm total newbie to PHP and Drupal but I fix this simple(?) thingo on my template. I want to get title, date, text and link path from this array? I can't get it out of there. I think its because its in inside of another array and because im noob in PHP I cant get it out of there ? Also I would like to get it to a loop. If theres more content, I would get it as a list or something. I would use foreach for this? Like foreach $contents as $content and so on?
I get this output from this: var_dump($contents);
array
'total' => string '1' (length=1)
'data' =>
array
0 =>
array
'cid' => string '13231' (length=3)
'title' => string 'TITLEBLABLABLA' (length=3)
'body_text' => string 'TEXTBLABLABAL' (length=709)
'created' => string '313131' (length=10)
'created' => string '2010-07-13 14:12:11' (length=19)
'path' => string 'http://goog.fi' (length=72)
Think of accessing multidimensional arrays in the same way you'd access a file in a subdirectory: just reference each level/directory in sequence. Assuming that array is stored in $arr, you'd get the title as follows:
$arr['data']['0']['title']
Here is a basic PHP array tutorial
It comes down to this:
You retrieve an element of an array with []
$array = array( 'a' => 'b');
echo $array['a']; //Prints b;
To loop through a multi-dimensional array and echo date try this...
foreach ($contents as $key => $content) {
echo $content[$key]['created'];
}
If that doesn't work, post the output of print_r($content) in your question so I can't build you exact array. I'm kinda confused over the structure of your array in your question.