php update array values

Question

I have two arrays with different length, but keys are similar.
My requirement is update $array1 with values of $array2 similar keys

$array1 = array("Jan"=>"0", "Feb"=>"0", "Mar"=>"0", "Apr"=>"0");

$array2 = array("Jan"=>"2", "Mar"=>"3");

Output:

$res = array("Jan"=>"2","Feb"=>"0","Mar"=>"3","Apr"=>"0");

try $array2+$array1

Chetan Ameta
– Chetan Ameta

2015-12-23 05:19:00 +00:00
Commented Dec 23, 2015 at 5:19 — Chetan Ameta
– Chetan Ameta, Commented Dec 23, 2015 at 5:19

Maha Dev · Accepted Answer · 2015-12-23 05:22:18Z

11

You can achieve it by this code:

$array1 = array("Jan" => "0", "Feb" => "0", "Mar" => "0", "Apr" => "0");

$array2 = array("Jan" => "2", "Mar" => "3");

$array3 = array_replace($array1, $array2);
print_r($array3);

answered Dec 23, 2015 at 5:22

Maha Dev

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2 Comments

Maha Dev Over a year ago

You can use existing $array1 instead of $array3, if you don't want to create new array.

user2870117 Over a year ago

Thank you very much Mr.Maha Dev

Vidhyut Pandya · Accepted Answer · 2015-12-23 06:26:41Z

0

You can simply use + operator.

$array1 = array("Jan"=>"0","Feb"=>"0","Mar"=>"0","Apr"=>"0");
$array2 = array("Jan"=>"2", "Mar"=>"3");
print_r($array2 + $array1);

DEMO

answered Dec 23, 2015 at 6:26

Vidhyut Pandya

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Comments

Bartłomiej Semańczyk · Accepted Answer · 2015-12-23 06:29:19Z

0

Try this:

array_merge($array1, $array2);

edited Dec 23, 2015 at 6:29

Bartłomiej Semańczyk

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answered Dec 23, 2015 at 5:19

Waqas Shahid

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3 Comments

Chetan Ameta Over a year ago

output from your code is Array ( [Jan] => 2 [Feb] => 0 [Mar] => 3 ) can you explain why array_unique?

Chetan Ameta Over a year ago

but the output should be $res = array("Jan"=>"2","Feb"=>"0","Mar"="3","Apr"=>"0"); as per question

Maha Dev Over a year ago

array_unique will remove all duplicate elements having same value. 0 in this case for Feb and Apr.

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