变量名设置为key，其值设置为数组中的value - Variable name set to key and its value set to value in an array

Variable name set to key and its value set to value in an array

本文关键字：设置 value 数组 key 变量名 | 更新日期: 2023-09-27

我想设置一组变量，然后循环它们，将它们添加到一个数组中，并将键设置为变量名，如下所示。

我只是不确定你是如何创建循环的。

// create an array
$array = array();
// Set up Variable
$green  = "31d944";
$red    = "d92929";
$blue   = "1b43d9";
$pink   = "d96ad8";
$orange = "d98225";
// Loop though - not sure how this would work...
for($i=0; $i<5; $i++){
    $array[] = $varNmae => $green;
}
// Output something like below
$array['green']; // output '31d944'
$array['red'];  // output 'd92929'
$array['blue']; // output '1b43d9'
$array['pink']; // output 'd96ad8'
$array['orange']; // output 'd98225'

compact()与extract()相反(将关联数组提取到本地符号表中)，并且是您想要使用的。

$array = compact("green", "red", "blue", "pink", "orange");

CodePad .

函数compact就是这样做的:

$array = compact('green', 'red', 'blue', 'pink', 'orange');

定义变量然后将它们添加到数组中，而不仅仅是初始化数组的想法是什么?

// Can't you just use this?
$ary = array(
  'green' => '31d944',
  ...
  'orange' => 'd98225',
);

可以与

循环

foreach ($ary as $color => $val) {
  echo "{$color} is equal to {$val}";
}

或访问

echo $ary['green'];