How can I transform a string into a multidimensional array in PHP without using loops?

Multidimensional Array Parsing in PHP without Loops

In PHP, splitting a string into a multidimensional array without using explicit loops is possible with the judicious use of PHP's array functions.

Solution:

The following code snippet demonstrates how to transform a string in the form "A,5|B,3|C,8" into a multidimensional array without using loops:

<code class="php">$str = "A,5|B,3|C,8";

$a = array_map(
    function ($substr) {
        return explode(',', $substr);
    },
    explode('|', $str)
);

var_dump($a);</code>

Explanation:

1. First, the string "A,5|B,3|C,8" is split into an array of substrings using the explode function with the delimiter '|'.
2. The array_map function is then used to iterate over each substring and split it again into an array of two values using the delimiter ','.
3. The resulting array $a contains a multidimensional representation of the input string, where the first dimension represents each substring and the second dimension holds the two values.

Example Output:

array
  0 =>
    array
      0 => 'A'
      1 => '5'
  1 =>
    array
      0 => 'B'
      1 => '3'
  2 =>
    array
      0 => 'C'
      1 => '8'

Note:

While array_map may be faster than a manual loop in some cases, it is important to note that it still involves a loop internally. However, the abstraction provided by the functions avoids the need for explicit looping in your code.

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