PHP在每次循环迭代中向数组添加键值

我有一个数组，我想从中创建一个具有键值对的新数组。我想我知道需要什么，我只是需要一些语法方面的帮助

foreach ($stuff as $thing){
    $thing1 = $thing->prop1;
    $thing2 = $thing->prop2;
    // this is where I need to set $newstuff = array($thing1 => $thing2);
    $newstuff[] = ??
}

这样做：

foreach ($stuff as $thing){
    $thing1 = $thing->prop1;
    $thing2 = $thing->prop2;
    // this is where I need to set $newstuff = array($thing1 => $thing2);
    $newstuff[$thing1] = $thing2;

}

或

取决于期望的结果

$newstuff = array();
foreach ($stuff in $thing) {
   $newstuff[$thing->prop1] = $thing->prop2; 
}

或

这一切都取决于是否要保存在数组中。

可以使用

array\u map（）

而不是

foreach（）

。例如：

$newstuff = array_map(function($v){return array($v->prop1=>$v->prop2);}, $stuff);

并使用

foreach（）

：

$newstuff = array();
foreach ($stuff in $thing) {
   $newstuff[$thing->prop1] = $thing->prop2; 
}

$newstuff = array();
foreach ($stuff in $thing) {
   $newstuff[] = array($thing->prop1, $thing->prop2); 
}

$newstuff = array_map(function($v){return array($v->prop1=>$v->prop2);}, $stuff);

foreach ($stuff as $thing){
    $newstuff[] = array($thing->prop1=>$thing->prop2);
}