3v4l.org

run code in 300+ PHP versions simultaneously

@ 2017-12-12T11:04:24Z

<?php

$currencies = [
    'USD',
    'BTC',
    'DASH',
    'LTC',
    'SC',
    'STEEM',
    'WAVES',
    'SNGLS',
    '1ST',
    'BQX',
    'ETH',
    'PTOY',
    'XAUR',
    ];
    
$input = [
  "BTCUSD",
  "DASHBTC",
  "DOGEUSD",
  "LTCBTC",
  "LTCUSD",
  "SCBTC",
  "STEEMBTC",
  "WAVESBTC",
  "SNGLSBTC",
  "1STBTC",
  "DASHUSD",
  "BQXETH",
  "PTOYETH",
  "XAURETH",
  "BTCUSDT",
];

$output=[];

function filterCurrency($doubleCurrency, $key){
    global $output;
    global $currencies;
    foreach($currencies as $currency){
        $pattern = '/^'.$currency. '/';
        preg_match($pattern, $doubleCurrency, $matches);
        if(array_key_exists(0, $matches)){
            $output[]=$matches[0];
        }
    }
}
array_walk_recursive($input, 'filterCurrency');
var_dump($output);

Output for git.master, git.master_jit, rfc.property-hooks: array(14) { [0]=> string(3) "BTC" [1]=> string(4) "DASH" [2]=> string(3) "LTC" [3]=> string(3) "LTC" [4]=> string(2) "SC" [5]=> string(5) "STEEM" [6]=> string(5) "WAVES" [7]=> string(5) "SNGLS" [8]=> string(3) "1ST" [9]=> string(4) "DASH" [10]=> string(3) "BQX" [11]=> string(4) "PTOY" [12]=> string(4) "XAUR" [13]=> string(3) "BTC" }

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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

preferences:dark modelive previewkey bindings

28.6 ms | 406 KiB | 5 Q