PHP - Merging two arrays into one array also Remove Duplicates

Question

Hi I m Trying to merge two arrays and also want to remove duplicate values from final Array   Here is my Array 1   Array            0    gt  stdClass Object            ID    gt  749      post author    gt  1      post date    gt  2012-11-20 06 26 07      post date gmt    gt  2012-11-20 06 26 07     And this is my array 2   Array    0    gt  stdClass Object    ID    gt  749  post author    gt  1  post date    gt  2012-11-20 06 26 07  post date gmt    gt  2012-11-20 06 26 07      I m using array merge for merging both arrays into one array  it is giving output like this  Array    0    gt  stdClass Object    ID    gt  749  post author    gt  1  post date    gt  2012-11-20 06 26 07  post date gmt    gt  2012-11-20 06 26 07   1    gt  stdClass Object    ID    gt  749  post author    gt  1  post date    gt  2012-11-20 06 26 07  post date gmt    gt  2012-11-20 06 26 07      I want to remove these duplicate entries or can I remove these before merging    Pleas help    Thanks

User · Answer

Merging two array will not remove the duplicate you can try the below example to get unique from two array    a1 array  a   gt  red   b   gt  green   c   gt  blue   d   gt  yellow     a2 array  e   gt  red   f   gt  green   g   gt  blue      result array diff  a1  a2   print r  result

User · Answer

It will merger two array and remove duplicate   lt  php   first    your first array     second    your second array     result   array merge  first  second    print r  result     result1  array unique  result    print r  result1      gt    Try this link link1

User · Answer

The best solution above faces a problem when using the same associative keys  array merge   will merge array elements together when they have the same NON-NUMBER key  so it is not suitable for the following case  a1 array  quot a quot   gt  quot red quot   quot b quot   gt  quot green quot   quot c quot   gt  quot blue quot   quot d quot   gt  quot yellow quot     a2 array  quot c quot   gt  quot red quot   quot d quot   gt  quot black quot   quot e quot   gt  quot green quot     If you are able output your value to the keys of your arrays instead  e g - gt pluck  name    id  - gt toArray   in Eloquent   you can use the following merge method instead array keys array merge  a1   a2    Basically what the code does is it utilized the behavior of array merge   to get rid of duplicated keys and return you a new array with keys as array elements  hope it helps

User · Answer

You can use this code to get the desired result  It will remove duplicates   a1 array  quot a quot   gt  quot red quot   quot b quot   gt  quot green quot   quot c quot   gt  quot blue quot   quot d quot   gt  quot yellow quot     a2 array  quot e quot   gt  quot red quot   quot f quot   gt  quot green quot   quot g quot   gt  quot blue quot      result array unique array merge  a1  a2     print r  result

User · Answer

try to use the array unique    this elminates duplicated data inside the list of your arrays

User · Answer

array unique array merge  array1  array2   SORT REGULAR     http   se2 php net manual en function array-unique php

User · Answer

As already mentioned  array unique   could be used  but only when dealing with simple data  The objects are not so simple to handle   When php tries to merge the arrays  it tries to compare the values of the array members  If a member is an object  it cannot get its value and uses the spl hash instead  Read more about spl object hash here   Simply told if you have two objects  instances of the very same class and if one of them is not a reference to the other one - you will end up having two objects  no matter the value of their properties   To be sure that you don t have any duplicates within the merged array  Imho you should handle the case on your own   Also if you are going to merge multidimensional arrays  consider using array merge recursive   over array merge

[php] PHP - Merging two arrays into one array (also Remove Duplicates)

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