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@ 2019-11-29T11:01:09Z

<?php

$arr = array(
    array
        (
            '45' => array(
                    '1 day'
                )
        ),
    array
        (
            '45' => array(
                   '- None -'
            )
        ),
        
    '- None -'    
);

function removeNoneElements(&$arr){
    $temp = $arr;
    $hasNone = false;
    foreach($temp as $index => $val){
        if(is_array($val)){
            $containsNone = removeNoneElements($val);
            if($containsNone){
                $hasNone = true;
                unset($arr[$index]);
            }
        }else if($val === '- None -'){
            unset($arr[$index]);
            $hasNone = true;
        }
    }
    
    return $hasNone;
}

echo "Before Removal",PHP_EOL;
print_r($arr);
removeNoneElements($arr);
echo "After Removal",PHP_EOL;
print_r($arr);

Output for git.master, git.master_jit, rfc.property-hooks: Before Removal Array ( [0] => Array ( [45] => Array ( [0] => 1 day ) ) [1] => Array ( [45] => Array ( [0] => - None - ) ) [2] => - None - ) After Removal Array ( [0] => Array ( [45] => Array ( [0] => 1 day ) ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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