Online PHP editor | output for JlsIl

@ 2019-03-23T16:45:08Z

<?php
$collections = [
            0 => [
                0 => [
                    "attr_id" => 23,
                    "value" => "Single Side"
                ],
                1 => [
                    "attr_id" => 23,
                    "value" => "Double Side"
                ],
            ],
            1 => [
                0 => [
                    "attr_id" => 31,
                    "value" => "A4"
                ],
                1 => [
                    "attr_id" => 31,
                    "value" => "12x18"
                ],
                2 => [
                    "attr_id" => 31,
                    "value" => "B5"
                ],
                3 => [
                    "attr_id" => 31,
                    "value" => "A5"
                ]
            ]
        ];
$expected = [];        
foreach($collections as $k=>$v){
            foreach($v as $k1=>$v1){
                $expected[$v1['attr_id']][] = $v1['value'];
            }
        }
print_r($expected)        
?>

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7: Array ( [23] => Array ( [0] => Single Side [1] => Double Side ) [31] => Array ( [0] => A4 [1] => 12x18 [2] => B5 [3] => A5 ) )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [23] => Array ( [0] => Single Side [1] => Double Side ) [31] => Array ( [0] => A4 [1] => 12x18 [2] => B5 [3] => A5 ) )

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