How to Break Array into Smaller Arrays?

Question

I need to break an array into smaller arrays using a deliminator such as a space, not using a certain numbers of chars (therefore array_chunk will not work for this and these answers How to break an array into a specified number of smaller arrays? is not relevant for the same reason).

Example:

$array1 = ("One two three","four five six","seven eight nine");

Would like to split "One two three" into three elements in one array (using a space as deliminator) and the same for the next two elements. This can be split into multidimensional array as well.

Post an example of what kind of input you're expecting to get, and what you want the output to be. — Connor Peet
– Connor Peet, Commented Sep 16, 2013 at 2:47

000 · Accepted Answer · 2013-09-16 02:56:53Z

2

php> $array1 = array("One two three","four five six","seven eight nine");

php> =array_map(function($a){return explode(' ',$a);},$array1)
array(
  0 => array(
    0 => "One",
    1 => "two",
    2 => "three",
  ),
  1 => array(
    0 => "four",
    1 => "five",
    2 => "six",
  ),
  2 => array(
    0 => "seven",
    1 => "eight",
    2 => "nine",
  ),
)

The anonymous function can be changed to however you see fit. Regex, whatever.

edit Per your comments:

php> $array1 = array("One two three","four five,six","seven,eight nine");

php> =array_map(function($a){return preg_split('/[ ,]/',$a);},$array1)
array(
  0 => array(
    0 => "One",
    1 => "two",
    2 => "three",
  ),
  1 => array(
    0 => "four",
    1 => "five",
    2 => "six",
  ),
  2 => array(
    0 => "seven",
    1 => "eight",
    2 => "nine",
  ),
)

answered Sep 16, 2013 at 2:56

000

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4 Comments

justhalf Over a year ago

Yes, the OP is asking what function can do regex split, for which preg_split should be the answer. au1.php.net/preg_split

000 Over a year ago

I don't see that in the Q

user2759721 Over a year ago

^^ No, you did not understand the question (justhalf)

justhalf Over a year ago

a space or a comma is not actually a complex pattern, haha

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