Help with arrays

[gibigbig]

my array here:

$array = array("4" => 'first',"4" => 'second',"5" => 'third');
echo $array['4'];

 

will one output "second", when i want it to output ALL values with the key "4";

 

is there anyway to get this without a foreach?

[trq]

Arrays need unique keys.

[gibigbig]

hmm, what im working on is a pokemon online game, and I want store the attacks in the level they will learn them, example

 

$array = array(
"4" => 'poison',
"4" => 'scratch',
"5" => 'tackle');

 

so when a pokemon levels up, I want to call on the level it just reached $array["4"] and get all the attacks it should learn at this level.

 

is there any solution

[trq]

Sorry but none of that made sense to me.

[gibigbig]

lol ok let me explain it from a coder's pov.

 

I have this multidimensional array:

 

$array = array(
		array("4" => 'poison'),
		array("4" => 'tackle'),
		array("6" => 'sleep powder'),
		array("44" => 'giga drain'),
		array("32" => 'synthesis'),
		array("23" => 'growth'),
		array("1" => 'double edge'),
		array("5" => 'take down')
     );

 

It is for a game, and it is in the format array("level_number" => "attack_name")

You learn new attacks based on the level you are at, if i just moved up to level 4, i want to get a code that gets the new attacks i will learn from this multidimensional array like so:

 

foreach($array as $a){
$attacks[] = $a['4'];
}

print_r($attacks);

 

 

and the output is:

 

Array
(
    [0] => poison
    [1] => tackle
    [2] => 
    [3] => 
    [4] => 
    [5] => 
    [6] => 
    [7] => 
)

 

This code is bad because it has empty fields and I am not comfortable with the way it is made. I want to know if there is a prettier way to to code this.

[trq]

That code should generate errors because you are trying to access an index that doesn't exist. Also, numeric keys are not strings, they do not need quotes.

 

foreach ($array as $a) {
  if (isset($a[4])) {
    $attacks[] = $a[4];
  }
}

[gibigbig]

yes it was an easy fix, i had already fixed it myself, but what i really wanted was a better way to get this output.

im  not comfortable using foreach() at all, my instincts are telling me there is a much easier and better way to do this

[wildteen88]

You could reconstruct attack array so each attack level is holds an array of attacks. Example array structure

$array (
// level => array of attacks    
    4  => array('poison', 'tackle'),  
    6  =>  array('sleep powder'),
    44 => array('giga drain'),
    // etc
)

 

Then all you need to do to get the all the attacks for level 4 would be

  if (isset($array[4])) {
    $attacks[] = $array[4];
  }