定義變量的多重條件-PHP

Question

我有這個數組$node_actions ：

Array
(
    [new] => yes
    [fav] => no
    [eye] => no
    [edit] => yes
    [delete] => yes
)

有時它會切碎一些元素（例如new或eye ）。因此，我需要定義一個具有以下操作的變量：

$actions = $new.' '.$fav.' '.$eye.' '.$edit.' '.$delete;

這是我的方法：

if(!isset(($node_actions['new'])){
    $actions =$fav.' '.$eye.' '.$edit.' '.$delete;
}elseif(!isset(($node_actions['fav'])){
    $actions =$new.' '.$eye.' '.$edit.' '.$delete;
}elseif(!isset(($node_actions['eye'])){
    $actions =$new.' '.$fav.' '.$edit.' '.$delete;
}elseif(!isset(($node_actions['edit'])){
    $actions =$new.' '.$fav.' '.$eye.' '.$delete;
}elseif(!isset(($node_actions['delete'])){
    $actions =$new.' '.$fav.' '.$eye.' '.$edit;
}elseif(!isset(($node_actions['new']) && !isset(($node_actions['new']) ){
    $actions =$eye.' '.$edit.' '.$delete;
}else{

} //.... and so on

有沒有一種優雅的簡便方法可以做到這一點？ 非常感激。

Answer 1

嘗試做：

$actions = "";
foreach($yourArr as $key => $val) {
  $actions .= $$key. " ";
}
$actions = trim($actions);

Answer 2

嘗試循環

foreach($arr as $k=>$v) {
  if(!empty($v)) {
    $actions .= $v.' ';  // yes no no yes yes 
    //$actions .= $k.' '; //new fav eye edit delete 
  }
}
echo $actions;

Answer 3

我更喜歡在$ new = 1中使用這種方法； $ fav = 2; $ eye = 4; $ edit = 8; $ delete = 16; 是綁定到某些特定任務的變量，它們與來自GET或POST的某些變量（在本例中為$ action）匹配

<?php

$new    = 1;
$fav    = 2;
$eye    = 4;
$edit   = 8;
$delete = 16;


$action = $fav | $eye; // OR $fav | $eye | $delete OR $new

if($action & $new) {
    echo "new";
} 

if($action & $fav) {
    echo "fav";
} 

if($action & $eye) {
    echo "eye";
} 

if($action & $edit) {
    echo "edit";
} 

if($action & $delete) {
    echo "delete";
} 

?>

希望這個能對您有所幫助