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@ 2013-10-25T09:22:51Z

<?php

$_POST = array
(
    'dddd' => array
        (
            'students' => array
                (
                    'парарпа' => array
                        (
                            'zach1' => 1,
                            'zach2' => 1,
                            'zach3' => 2,
                            'zach4' => 3,
                            'ekz1' => 5,
                            'ekz2' => 5,
                            'ekz3' => 5,
                            'ekz4' => '',
                        ),

                    'ававп' => array
                        (
                            'zach1' => 3,
                            'zach2' => 5,
                            'zach3' => 4,
                            'zach4' => 2,
                            'ekz1' => 4,
                            'ekz2' => 3,
                            'ekz3' => 2,
                            'ekz4' => '',
                        ),

                ),

            'zach1' => 'рпа',
            'zach2' => 'рпарпарпар',
            'zach3' => '',
            'zach4' => 'пар',
            'ekz1' => 'пав',
            'ekz2' => 'авпав',
            'ekz3' => 'ва',
            'ekz4' => '',
        ),

    'ggg' => array
        (
            'students' => array
                (
                    'авпва' => array
                        (
                            'zach1' => 3,
                            'zach2' => 3,
                            'zach3' => 2,
                            'zach4' => '',
                            'ekz1' => 4,
                            'ekz2' => '',
                            'ekz3' => '',
                            'ekz4' => '',
                        ),

                ),

            'zach1' => 'паыв',
            'zach2' => 'авы',
            'zach3' => 'ыва',
            'zach4' => '',
            'ekz1' => 'выа',
            'ekz2' => '',
            'ekz3' => '',
            'ekz4' => '',
        ),

    'fffff' => array
        (
            'students' => array
                (
                    'авыв' => array
                        (
                            'zach1' => 5,
                            'zach2' => 5,
                            'zach3' => '',
                            'zach4' => '',
                            'ekz1' => 4,
                            'ekz2' => 4,
                            'ekz3' => '',
                            'ekz4' => '',
                        ),

                    'ваыыва' => array
                        (
                            'zach1' => 3,
                            'zach2' => 3,
                            'zach3' => '',
                            'zach4' => '',
                            'ekz1' => 2,
                            'ekz2' => 3,
                            'ekz3' => '',
                            'ekz4' => '',
                        ),

                ),

            'zach1' => 'ва',
            'zach2' => 'ва',
            'zach3' => '',
            'zach4' => '',
            'ekz1' => 'ва',
            'ekz2' => 'ва',
            'ekz3' => '',
            'ekz4' => '',
        ),

);

foreach($_POST as $groupName=>$data) {echo $groupName;}

Output for git.master, git.master_jit, rfc.property-hooks: ddddgggfffff

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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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