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

431

I want to set up a load of variables then loop though them adding them to an array with the key set as the variable name, something like below.

I am just not sure how you create the loop.

// 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'

215

Answer

Solution:

is the opposite of (extracting an associate array into the local symbol table), and is what you want to use.

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

CodePad.

137

Answer

Solution:

The function does exactly this:

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

Answer

Solution:

What is the thinking in defining the variables and then adding them to an array, instead of just initialising the array?

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

Could be looped with

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

Or accessed as

echo $ary['green'];

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