filling an array with values

[kaptlid]

I could not find any documentation on this so I'll ask here if its even possible.

Say you have an array with keys 1-12 values are null so far. And then you have another array with the values array(1,3,7,8,10,11); How do you make another array to look like:
array(
[1] = '1',
[2] = ' ',
[3] = '3',
[4] = ' ',
[5] = ' ',
[6] = ' ',
[7] = '7',
[8] = '8',
[9] = ' ',
[10] = '10',
[11] = '11',
[12] = '',
)

Regards,

 

[sleipnir214]

Have you looked at:

http://www.php.net/manual/en/language.types.array.php

? There is a discussion of sparse arrays as well as example code.



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[kaptlid]

Whats a sparse array? I looked at it, but its confusing.

 

[sleipnir214]

An array that has element keys from 1 to 10 is not sparse. An array that has some keys between 1 to 10 is sparse.

Look at those code examples where the array() invocation sets explicit keys. Hint: look for the string: =>



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[kaptlid]

I tried setting keys but it did not work...
for example: if (data[8] == 9) { data[9] = '9'; }

 

[sleipnir214]

Why wouldn't that code snippet work? What are you trying to do?



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[kaptlid]

$data = array(2,4,5,7,9,10,11);
 
 $new = array();
  for($i = 1; $i <= 12; $i++) {$new[$i] = in_array($i, $data) ? $i : null; }
    
   echo '<pre>'; print_r($new);  echo '</pre>';

something like this...

 

[sleipnir214]

Why are you jumping through all those hoops? Just do it when you initialize the array.

The link I posted includes the line:

$arr = array(5 => 1, 12 => 2);

which will create an array where $arr[5] = 1 and $arr[12] = 2. You should be able to generalize from there to add elements that are blank.



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