Question

所以我有多个我要填充的空数组，让我们说

$a_tab = [];
$b_tab = [];
$c_tab = [];

我有一个包含一些数据的数组，让我们说

$data = ['a' => 'foo', 'b' => 'bar', 'c' => 'foobar'];

我希望能够做到这样的事情：

foreach($data as $key => $value) {
    $tab_name = $key . '_tab'; // so we have a variable that have the same name as one of the array we declared before
    $$tab_name[$value] = $value; // this should add 'foo' into $a_tab, 'bar' in $b_tab and 'foobar' in $c_tab
}

但是没有任何值被添加到任何数组......

有人可以解释一下我做错了什么吗？

PS：如果你不想要伪代码，这是我遇到问题时的代码：

// $tab is a parameter of the current function

$done_courses = []; // the array where we are going to put every courses that already have been added in one bifurcation tab

$regex_wz = '/\_werkzoekende/';
$regex_bd = '/\_bediende/';
$regex_op = '/\_outplacement/';

$bifurcation_keys = ['wz_tab' => $regex_wz, 'bd_tab' => $regex_bd, 'op_tab' => $regex_op];

// create the 3 arrays
$wz_tab = [];
$bd_tab = [];
$op_tab = [];

foreach($tab as $key => $value) {
    foreach($bifurcation_keys as $tab_name => $regex) {
        if(preg_match($regex, $key)) {
             $n_k = preg_replace($regex, '', $key);
             $$tab_name[$n_k] = $value;
             if(!isset($done_courses[$n_k])) {
                 $done_courses[$n_k] = $n_k;
             }
        }
    }
}

Answer 1

你试过..

foreach($data as $key => $value) {
    ${$key.'_tab'}[$value] = $value; 
}

访问由＆＃39;指针定义的数组＆＃39;

1 个答案: