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@ 2018-11-03T17:47:37Z

<?php

$students = Array(
    Array(
            'userId' => 'user1',
            'name' => 'Suman Mandal',
            'age' => 20,
        ),
    Array(
            'userId' => 'user2',
            'name' => 'Amit Halder',
            'age' => 30,
        ),
    Array(
            'userId' => 'user3',
            'name' => 'Asif Rahman',
            'age' => 25,
        ),
    Array(
            'userId' => 'user4',
            'name' => 'Gopal Ghosh',
            'age' => 21,
    )
);
            
$marks =  Array(
    Array(
            'userId' => 'user1',
            'marks'=>80,
        ),
    Array(
            'userId' => 'user3',
            'marks'=>90, 
        )

);


$students = array_column($students, null, 'userId');
$marks = array_column($marks, null, 'userId');
$marks_sheet = array_intersect_key(array_replace_recursive($students, $marks), $marks);
print_r($marks_sheet);

Output for git.master_jit, git.master, rfc.property-hooks: Array ( [user1] => Array ( [userId] => user1 [name] => Suman Mandal [age] => 20 [marks] => 80 ) [user3] => Array ( [userId] => user3 [name] => Asif Rahman [age] => 25 [marks] => 90 ) )

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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