Find difference value from two array in php [duplicate] - php

Question

This question already has answers here:
Compare two array and get all differences
(2 answers)
Closed last year.
I want to get difference value from array and also want to compare that difference value is from which array.
First Array => Variable : $first_array
Array {607,608,609}
Second Array => Variable : $second_array
Array {607,608,609,610}
want to get output like Difference value : 610...... From Array :- $second_array
How can i get ? please help me ....

Answer 1

You can use array_diff()
$result=array_diff($first_array,$second_array);
print_r($result);

Answer 2

Try this :
$first_array=array(607,608,609);
$second_array=array(607,608,609,610);
$result=calculate_diff($second_array,$first_array);
print_r($result);
function calculate_diff($array1,$array2)
{
$diff = [];
$larger_array = $array2;
$smaller_array = $array1;
if(count($array1) > count($array2))
{
$larger_array = $array1;
$smaller_array = $array2;
}
foreach($larger_array as $ele)
{
if(!in_array($ele,$smaller_array))
{
$diff[] = $ele;
}
}
return $diff;
}

Answer 3

it will work
<?php
$a=Array(607,608,609,610);
$b=Array (607,608,609);
$result=array_diff($a,$b);
print_r($result);
?>
or else try this
<?php
$array2 = array(607,608,609);
$array1 = array(607,608,609,275);
foreach ($array1 as $value)
{
if(in_array($value, $array2))
{
$key = array_search($value, $array2);
$key1 = array_search($value, $array1);
unset($array2[$key]);
unset($array1[$key1]);
//echo "yes<br>";
}
}
$merge = array_merge($array1,$array2);
print_r($merge);
?>

Answer 4

Use array_diff
<?php
$a=Array(607,608,609,610);
$b=Array (607,608,609);
$res=array_diff($a,$b);
print_r($res); // output 610
?>

Answer 5

Try this:
$a = array(607,608,609,610);
$b = array(607,608,609);
$c = array_diff($a,$b);
print_r($c);

Answer 6

Try This:
$a1=array(607,608,609,610);
$a2=array(607,608,609);
$result=array_diff($a1,$a2);
print_r($result);
Output :- Array ( [3] => 610 )

Answer 7

Try this by merging them and then using array_diff, array_diff_assoc and array_unique.
https://3v4l.org/Z1vpe
$first = Array(607,608,609,610);
$second = Array(800,607,608,609);
$Fcount = count($first);
$arr = array_merge($first, $second);
$arrc= array_diff($arr, array_diff_assoc($arr, array_unique($arr)));
foreach ($arrc as $key => $value){
if($key < $Fcount){
echo "first array ". $value . "\n";
}else{
echo "second array " . $value . "\n";
}
}
Edited to add how to find which array the value is in. https://3v4l.org/W7rch

Answer 8

$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("e"=>"red","f"=>"green","g"=>"blue","r"=>"black");
$d = array_merge($a1,$a2);
output:array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow","e"=>"red","f"=>"green","g"=>"blue","r"=>"black")
$result=array_diff($d,array_intersect($a2,$a1));
print_r($result);
output:array("d"=>"yellow","r"=>"black");