Assign a value conditionally after array is set with PHP

If I wanted to do something like this:

<?php

$numbers = array(

    "a_pos" => 0,
    "b_pos" => 2,
    "c_pos" => 3

    );


if ($numbers["a_pos"] == 0)
    $a_pos_txt = TRUE;

if ($numbers["b_pos"] == 0)
    $开发者_运维问答b_pos_txt = TRUE;

if ($numbers["c_pos"] == 0)
    $c_pos_txt = TRUE;

?>

(Just assign TRUE to $a_pos_txt because it is equal to 0)

What would be that smart way to do it? I´m sure there must be a way to do it in "one step".

Thanks in advance!!

Please ask for any needed clarificarion.

Not really sure what you're trying to accomplish, as there may be a better approach overall, but to answer your question, you can skip the if statements like so:

$a_pos_txt = $numbers["a_pos"] == 0;
$b_pos_txt = $numbers["b_pos"] == 0;
$c_pos_txt = $numbers["c_pos"] == 0;

If the $numbers is an array, you can do a loop to avoid repeating the similar pattern,
such as

foreach ($numbers as $key=>$val)
{
  if ($val==0)
  {
    ${$key."_txt"}=true;
  }
}