在php中使用for循环构建关联数组

Question

I am trying to create an associative array using php. My desired output is

Array
(
     [key] => fl_0_sq
),
Array
(
     [key] => fl_1_sq
)

The code is

  $max_val = 2;  
  for($i=0; $i<$max_val; $i++)
  {
        $flr_arr .= "array('key' => 'fl_".$i."_sq'),";      
  }
  print_r($flr_arr);

Output is

array('key' => 'fl_0_sq'),array('key' => 'fl_1_sq'),

Now the issue is that it has become a string instead of an array. Is it at all possible to create a array structure like the desired output. Any help is highly appreciated.

Answer 1

You could do this:

<?php

$flr_arr = [];

$max_val = 2;
for ($i = 0; $i < $max_val; $i++) {
  $flr_arr[][key] = 'fl_' . $i . '_sq';
}

$output = "<pre>";

foreach ($flr_arr as $i => $flr_arr_item) {
  $output .= print_r($flr_arr_item, true);
  if($i < count($flr_arr)-1){
    $output = substr($output, 0, -1) . ",
";
  }
}
$output .= "</pre>";

echo $output;

The output:

Array
(
    [key] => fl_0_sq
),
Array
(
    [key] => fl_1_sq
)