What is the most efficient way to do it? I need to do order the array and make three of keys in front of others (ascending order) Code: 0 => BoomX 1 => Safezone 2 => Ninjaz 3 => Warzone 4 => Wilderness But it must be Code: 0 => Wilderness 1 => Warzone 2 => Safezone 3 => BoomX 4 => Ninjaz My current code. It doesn't order the factions right now. PHP: public function loadSavedFactions() { foreach (scandir(self::$factionFolder) as $file) { if ($file == "." or $file == "..") continue; $name = $file; $data = $this->getSavedFactionData($name); if (empty($data)) { $this->getPlugin()->getLogger()->warning("Failed to load faction: " . $name); continue; } // Directly attach it to storage if any error happens while creating a object, it will self-detach Factions::attach(new Faction($data["name"], $data["id"], $data)); if (Factions::getById($data["id"])) { $this->getPlugin()->getLogger()->info("Faction " . $data["name"] . " loaded!"); continue; } else { $this->getPlugin()->getLogger()->info("Unknown error occured while loading faction: " . $data["name"]); continue; } } Possible solution: PHP: $factions = ["wilderness", "warzone", "safezone"];foreach(...) { if($file == '.' or $file == '..' or in_array($file, $factions, true)) continue;} Actually I don't expect to get solution. I'm trying to make this community live again by asking as many questions as possible from now on
This might help. http://php.net/manual/en/array.sorting.php http://php.net/manual/en/function.sort.php
PHP: function sortWithPriority(array &$array){ usort($array, function($a, $b){ if($a === "Wilderness") return -1; // Wilderness should always come first if($b === "Wilderness") return 1; // Wilderness should always come first if($a === "Warzone") return -1; // $b was confirmed on line 4 not Wilderness, so Warzone is the next to come first if($b === "Warzone") return 1; // $a was confirmed on line 3 not Wilderness, so Warzone is the next to come first return $a <=> $b; // normal alphabetical sorting });} If your case has an unknown or large number of exceptional cases, use this method instead: PHP: function internalPriority(string $name){ switch($name){ case "Wilderness": return 1; case "Warzone": return 2; case "Treezone": return 3; case "Spawn": return 4; default: return PHP_INT_MAX; }}// OR, if the order comes from a config:function internalPriority(string $name, array $configArray){ // example of config array: // ["Wilderness", "Warzone", "Treezone", "Spawn"] if(($pos = array_search($name, $configArray)) !== false){ return $pos; } return PHP_EOL;}function sortWithPriority(array &$array){ usort($array, function($a, $b){ $pa = internalPriority($a); $pb = internalPriority($b); if($pa !== $pb) return $pa <=> $pb; return $a <=> $b; });}
This is what I planned to use but I really didn't got how to do comparison correctly, thanks bud also the Closures are awesome
@Primus I edited this post. Included information about how to do it dynamically rather than hardcoding.
There is also a third method. You can prepend the "\0" and "\1" bytes before "Wilderness" and "Warzone", so automatically sorting will always put them at the beginning. However, this is really bad for many situations, and is not really safe against things such as filename checking, user input sanitation, etc. If I were you, I would adopt the second method.
It looks like operator "<=>" is unsupported in previous versions of PHP, is it something new from PHP7? Alright, I tested the code and as far as I can tell there's a bug Code: # Original array Array ( [0] => Kelox [1] => Mushrooms [2] => ICandy [3] => Dirtz [4] => Warzone [5] => FireFly [6] => Safezone [7] => Nyx [8] => Nexus [9] => Freon [10] => Wilderness [11] => jYgx [12] => incrementZ ) # Result: ( [0] => Dirtz [1] => FireFly [2] => Freon [3] => ICandy [4] => Kelox [5] => Mushrooms [6] => Nexus [7] => Nyx [8] => incrementZ [9] => jYgx [10] => Wilderness [11] => Warzone [12] => Safezone ) Spoiler: Code I used PHP: function internalPriority(string $name){ switch($name){ case "Wilderness": return 1; case "Warzone": return 2; case "Safezone": return 3; case "Spawn": return 4; default: return PHP_EOL; }}function sortWithPriority(array &$array){ usort($array, function($a, $b){ $pa = internalPriority($a); $pb = internalPriority($b); if($pa !== $pb) return $pa <=> $pb; return $a <=> $b; });} $array = ["Kelox", "Mushrooms", "ICandy", "Dirtz", "Warzone", "FireFly", "Safezone", "Nyx", "Nexus", "Freon", "Wilderness", "jYgx", "incrementZ"];print_r($array);sortWithPriority($array);print "\n";print_r($array);
Oh oops, I meant to return PHP_INT_MAX rather than PHP_EOL Also, if you want case-insensitive string comparison, try strcasecmp() or strtolower() <=> strtolower() Yes, <=> the spaceship operator is something new in PHP 7. See http://stackoverflow.com/documentat...16/spaceship-operator#t=201608191444293904398 for examples.
