array-difference Questions

4

I have two arrays containing repeating values: $test1 = [ "blah1", "blah1", "blah1", "blah1", "blah2" ]; $test2 = [ "blah1", &quo...
Rebirth asked 9/2, 2016 at 2:21

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I know there is array_diff and array_udiff for comparing the difference between two arrays, but how would I do it with two arrays of objects? array(4) { [0]=> object(stdClass)#32 (9) { [&quot...
Cacciatore asked 24/6, 2011 at 18:27

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I'm confusing array_diff behavior why genre don't exist on diff array? Do you know how to resolve the matter? -code <?php $array1 = array ( 'value01' => '0', 'value02' => 'v2', 'genre' ...
Electrophorus asked 20/1, 2011 at 0:47

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Is there a way to return the difference between two arrays in JavaScript? For example: var a1 = ['a', 'b']; var a2 = ['a', 'b', 'c', 'd']; // need ["c", "d"]
Cosgrave asked 27/7, 2009 at 10:38

11

I get array to string conversion error for the following line: $diff = array_diff_assoc($stockist, $arr); Here, $arr is an array decoded from a JSON file. Using the is_array() function I was able ...
Romantic asked 7/11, 2013 at 7:55

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I want to compare the values of two flat, indexed arrays and generate a new array where the keys are the original values from the first array and the values are boolean values indicating whether th...
Fagan asked 23/11, 2016 at 23:6

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I have following two arrays. I want the difference between these two arrays. That is, how can I find the values that do not exist in both arrays? $array1 = [64, 98, 112, 92, 92, 92]; $array2 = [3...
Cholecyst asked 9/4, 2012 at 18:25

2

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I want to compare the data in whole rows between the two arrays and produce: an array of intersecting rows and an array where rows in the first array are not found in the second array and an array...

3

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I have two arrays, and I am using array_diff_assoc() to get the difference, but it always returns the common set row in the result It should be returning the new q sets row. What's wrong with my ap...

5

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I have two arrays and these arrays contain information about id, linklabel and url in the following format: $pageids = [ ['id' => 1, 'linklabel' => 'Home', 'url' => 'home'], ['id' => ...
Mcdonnell asked 12/3, 2014 at 14:33

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I have an array containing rows of associative data. $array1 = array( array('ITEM' => 1), array('ITEM' => 2), array('ITEM' => 3), ); I have a second array, also containing rows of asso...

3

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What is the difference between array_udiff_assoc() and array_diff_uassoc()? For array_udiff_assoc(), I have this code: function myfunction($v1,$v2) { if ($v1===$v2) { return 0; } return 1; } ...
Pinhead asked 2/2, 2012 at 17:35

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What's the fastest/best way to compare two arrays and return the difference? Much like array_diff in PHP. Is there an easy function or am I going to have to create one via each()? or a foreach loop...
Lodger asked 7/6, 2012 at 7:46

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I'm using jq and trying to remove an element from an array based on it's value by can't figure out the syntax, it works with map but not del: input = [10,11,12] echo $input | jq -r 'map(select(. ...
Wellworn asked 3/1, 2018 at 13:42

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I've got two arrays of Tasks - created and assigned. I want to remove all assigned tasks from the array of created tasks. Here's my working, but messy, code: @assigned_tasks = @user.assigned_tas...
Horseflesh asked 28/7, 2009 at 6:14

2

I have two arrays, for example: array1=numpy.array([1.1, 2.2, 3.3]) array2=numpy.array([1, 2, 3]) How can I find the difference between these two arrays in Python, to give: [0.1, 0.2, 0.3] As...
Antipole asked 2/2, 2014 at 20:52

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I'm trying to count the differences between two arrays where the order DOES matter. For example: array_one = ["A", "B", "C"] array_two = ["B", "C", "A"] This would yield 3 differences because: ...
Supercargo asked 12/9, 2016 at 2:18

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I'm trying to use array_diff like so. Here are my two array outputs: List 1 Output Array ([0] => 0022806 ) List 2 Output Array ([0] => 0022806 [1] => 0023199 ) PHP $diff = array_diff($...
Bouncing asked 16/10, 2012 at 18:43

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I have the following two arrays: $array_one = array('colorZero'=>'black', 'colorOne'=>'red', 'colorTwo'=>'green', 'colorThree'=>'blue', 'colorFour'=>'purple', 'colorFive'=>'golde...
Thaler asked 24/8, 2014 at 13:35

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There is a list of words and list of banned words. I want to go through the word list and redact all the banned words. This is what I ended up doing (notice the catched boolean): puts "Give input ...
Harebell asked 5/5, 2015 at 11:46

3

First of all I need to mention that I digged into manual and php docs and didnt find an answer. Here's a code I use: class chomik { public $state = 'normal'; public $name = 'no name'; public ...
Agonistic asked 27/2, 2012 at 0:22

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I wish to subtract 2 gray human faces from each other to see the difference, but I encounter a problem that subtracting e.g. [4] - [6] gives [254] instead of [-2] (or difference: [2]). print(type(...
Michaeu asked 31/10, 2014 at 15:25

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In short: I have two arrays which may be different, and I'll like to get the difference/transformation as a series of "actions" (adds and removes). That is, in a basic example: Current: [a, b, d] ...
Forebear asked 19/12, 2013 at 18:3

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I have following two arrays and the code to find array_diff: $obs_ws = array("you", "your", "may", "me", "my", "etc"); $all_ws = array("LOVE", "World", "Your", "my", "etc", "CoDe"); $final_ws = a...
Longplaying asked 9/12, 2009 at 18:31
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