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@ 2023-04-08T11:22:30Z

<?php

$array = [
    [
      'u' => '30', 
      'v' => '16', 
      'w' => '22',        
      'x' => '30', 
      'y' => '16', 
      'z' => '22',  
    ],
    [
      'u' => '32', 
      'v' => '25', 
      'w' => '1',        
      'x' => '30', 
      'y' => '16', 
      'z' => '22',
    ],
    [
      'u' => '30', 
      'v' => '16', 
      'w' => '22',        
      'x' => '54', 
      'y' => '96', 
      'z' => '2',
    ],
    [
      'u' => '30', 
      'v' => '16', 
      'w' => '22',        
      'x' => '3', 
      'y' => '1', 
      'z' => '6',
    ]
];

$result = [];
foreach ($array as $row) {
    $key = vsprintf('%d_%d_%d', $row);
    if (!isset($ref[$key])){
        $ref[$key] = $row;
        $result[] = &$ref[$key];
    } else {
        $ref[$key]['x'] .= ',' . $row['x'];
        $ref[$key]['y'] .= ',' . $row['y'];
        $ref[$key]['z'] .= ',' . $row['z'];
    }
}
var_export($result);

Output for git.master, git.master_jit, rfc.property-hooks: array ( 0 => array ( 'u' => '30', 'v' => '16', 'w' => '22', 'x' => '30,54,3', 'y' => '16,96,1', 'z' => '22,2,6', ), 1 => array ( 'u' => '32', 'v' => '25', 'w' => '1', 'x' => '30', 'y' => '16', 'z' => '22', ), )

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Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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