How to Transpose and Concatenate Elements in a Multidimensional Array?

Transpose and Concatenate Multidimensional Array Elements

Given a two-dimensional array, the task is to transpose its elements, join elements within rows with commas, and join rows with pipes to create a single string.

Problem:

Consider the following two-dimensional array:

01 03 02 15
05 04 06 10
07 09 08 11
12 14 13 16

The goal is to convert this array into a string with the following format:

01,05,07,12|03,04,09,14|02,06,08,13|15,10,11,16

Solution:

To achieve this, we can follow these steps:

1. Use foreach loop to iterate over each sub-array within the original array.
2. Within each iteration, use implode() with a comma as the separator to concatenate the elements of the sub-array, creating a single string.
3. Store the resulting strings in a temporary array.
4. Finally, use implode() again with a pipe as the separator to concatenate the strings in the temporary array, creating the desired output string.

Here's a PHP code snippet that demonstrates the solution:

<code class="php">$array = array (
  array ('01','03','02','15'),
  array ('05','04','06','10'),
  array ('07','09','08','11'),
  array ('12','14','13','16')
);

$tmpArr = array();
foreach ($array as $sub) {
  $tmpArr[] = implode(',', $sub);
}
$result = implode('|', $tmpArr);

echo $result;</code>

This code will output the desired string in the specified format.

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