Array_merge() two array into one not working - php

I have problem wiht array_merge():
First array:
$array1=array(
[0]=>array(["key1"]=>"value1",["key2"]=>"value2",["key3"]=>"value3")
);
Second array:
$array2=array(["key4"]=>"value4",["key5"]=>"value5",["key6"]=>"value6");
And I need merge this arrays to one like this:
$array1=array(
[0]=>array(["key1"]=>"value1",["key2"]=>"value2",
["key3"]=>"value3",["key4"]=>"value4",["key5"]=>"value5",["key6"]=>"value6"));
But when use:
$array3=array_merge($array1,$array2);
var_dump($array3);
var_dump return this:
array(
[0]=>array(["key1"]=>"value1",["key2"]=>"value2",
["key3"]=>"value3") ["key4"]=>"value4",["key5"]=>"value5",["key6"]=>"value6");
And don't know why.
Thanks


$array3=array(array_merge($array1[0],$array2));
you have to merge the inner array, not the outer one.
https://3v4l.org/dCm2F


Merging the first element from first array with the second one, may help:
$array3 = array();
$array3[0] = array_merge($array1[0], $array2);

Related

PHP- Create an array with the matches of two arrays

I am trying to compare two non-associative arrays to create a new array with the matches.
This is what I have though:
//This array has several entries
$a_firstarray = Array();
//This array has less entries than the first array
$a_secondarray = Array();
//This array should contain the matches of the first array and the second array in no particular order
$a_mergedarray
for($i=0;$i <=count($a_firstarray);$i++){
for($a=0;$a <=count ($a_secondarray);$a++){
if($a_firstarray[$i] == $a_secondarray[$a]){
$a_mergedarray[] = $a_activecategory[$i];
}
}
}
It doesn't work for some reason. I am also sure that PHP has some sort of function that does this. Any ideas? thanks in advance.

This is known as the "intersection" of two arrays. PHP provides array_intersect.

use array_intersect.
$result = array_intersect($array1, $array2);

Are you looking for array_intersect()?
http://php.net/manual/en/function.array-intersect.php

Put multiple PHP arrays inside another array maintaining keys including duplicates

If I have two arrays and I want to "combine" them into one array whilst maintaining each individual array and leaving the keys as they are as they are always duplicated each iteration, can I do this?:
$array1 = array('0'=>'Bob', '1'=>'Tom', '2'=>'John');
$array2 = array('0'=>'Michelle', '1'=>'Joan', '2'=>'Susan');
If I use array_merge:
$new_array = array_merge($array1, $array2);
I get:
array('0'=>'Bob','1'=>'Tom','2'=>'John','3'=>'Michelle','4'=>'Joan','5'=>'Susan')
whereas I want to get something like:
array(array('0'=>'Bob', '1'=>'Tom', '2'=>'John'),array('0'=>'Michelle', '1'=>'Joan', '2'=>'Susan'))

Create a new array and add the other arrays to that one like this:
$arr = array($array1, $array2);

$ new_array = array ($ array, $ array2);

php - Adding an element form one array into another

I have 2 arrays like so:
$array1 = array(
array("foo"=>"bar","count"=>"3"),
array("foo2"=>"bar2","count"=>"4"),
array("foo3"=>"bar3","count"=>"2")
);
$array2 = array(
array("foo4"=>"bar","count"=>"3"),
array("foo5"=>"bar2","count"=>"4"),
array("foo6"=>"bar3","count"=>"2")
);
how can i add the 3rd element of array2 into array1 so it can become like this:
$array1 = array(
array("foo"=>"bar","count"=>"3"),
array("foo2"=>"bar2","count"=>"4"),
array("foo3"=>"bar3","count"=>"2"),
array("foo6"=>"bar3","count"=>"2")
);
i have tried doing $array1 += $array2[2]; but it doesn't work. it just adds the keys from array("foo6"=>"bar3","count"=>"2") to array1 instead of adding it as an array in $array1
Could you help me out?

The [] operator appends an element to the end of an array, like this
$array1[] = $array2[2];

Just do like this:
$array1[] = $array2[2];

If you want the exact 3rd item, then you could do something like:
$array1[] = $array2[2];
If you want the last item of the array, you can use:
$array1[] = $array2[count($array2)];

try this
$array1[] = $array2[2];

array_merge() is a function in which you can copy one array to another in PHP.
http://php.net/manual/en/function.array-merge.php

Change the keys of an array

I've an array like below :
$array = array('string'=>'hello','somethingeElse'=>'how r u', ....);
I wanna change the keys of array to numeric values (consecutive):
$array = array('1'=>'hello','2'=>'how r u','3'=>....);
any help would be appreciated ;)

You could use the array_values() function, which will basically do what you say.
array_values() returns all the values from the input array and indexes
numerically the array.
Example:
$array = array_values($array);

If you want to avoid PHP loops, you may try something like :
$newArray = array_combine(range(1, count($array)), array_values($array));

Remove duplicates from array

I have two arrays, like this:
$array1 = array(
'ADAIR',
'ADAM',
'ADAMINA',
'ADDISON',
'ADDY',
'ADELLE',
'ADEN',
'ADOLPH',
'ADRIANNA'
);
$array2 = array(
'ADAIR',
'ADAMINA',
'ADRIANNA'
);
How do I make a third array, without duplicates? We should take first array and remove from it duplicates from second array.

Use Array-diff
$array3=array_diff($array1,$array2);
Returns an array containing all the entries from array1 that are not present in any of the other arrays.

Take a look here: http://php.net/manual/en/function.array-unique.php
Combine both arrays into 1, then run them through the array-unique function
$result = array_unique($combined);

#grunk deleted a perferctly valid answer, so credits not to me:
$unique = array_unique(array_merge($array1,$array2));
codepad.org/NVkuml5g

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