How to concatenate 2 strings in a multi dimensional array? - php

Question

I've a muti dimensional array. I want to concatenate 2 strings separately for 2 array values and the 2 strings should not be concatenated for a single value. I want CM and PM concatenated 2 times any where in the array. I've tried looping the array and generating array_rand but i generates only once. Any help is much appreciated. Below is one example of what am achieving.
Thing am trying to achieve
Concatenate "PM" and "CM" string in one set of array and same value can't be CM and PM
Every array should have PM and CM concatenated
1 "Name" value should have minimum 1 CM and PM and Maximum 2 CM and PM
For example: I've the below multi dimensional array.
Array
(
[0] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C
[3] => Name-4
[4] => Name-5
)
[1] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C
[3] => Name-4
[4] => Name-5
)
[2] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C
[3] => Name-4
[4] => Name-5
)
[3] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C
[3] => Name-4
[4] => Name-5
)
[4] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C
[3] => Name-4
[4] => Name-5
)
)
After concatenating
Array
(
[0] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C["PM"]
[3] => Name-4["CM"]
[4] => Name-5
)
[1] => Array
(
[0] => Name-A
[1] => Name-B["PM"]
[2] => Name-C
[3] => Name-4["CM"]
[4] => Name-5
)
[2] => Array
(
[0] => Name-A["PM"]
[1] => Name-B
[2] => Name-C
[3] => Name-4
[4] => Name-5["CM"]
)
[3] => Array
(
[0] => Name-A["PM"]
[1] => Name-B["CM"]
[2] => Name-C
[3] => Name-4
[4] => Name-5
)
[4] => Array
(
[0] => Name-A
[1] => Name-B
[2] => Name-C["CM"]
[3] => Name-4
[4] => Name-5["PM"]
)
)

Answer 1

Sorry I didn't understand at first.
Given $your_array:
// Generate an array where the names are the key, and assign a zero value to PM (0) and CM (1) in a sub array
$ar = array_fill_keys($your_array[0], array (0 => 0, 1 => 0));
//$array the sub_value, $add the case PM ou CM, $exclusion is the key used the first time
function rand_in_array($array, $add, $ar, $exclusion)
{
// Select a random key
$arr_key = array_rand($array, 1);
if($ar[$array[$arr_key]][$add] < 2 && ($arr_key != $exclusion))
{
return $arr_key;
}
return rand_in_array($array, $add, $ar, $exclusion);
}
for($i=0; $i<count($your_array);$i++)
{
$arr_key_pm = rand_in_array($your_array[$i], 0, $ar, 99);
$ar[$your_array[$i][$arr_key_pm]][0]++;
$arr_key_cm = rand_in_array($your_array[$i], 1, $ar, $arr_key_pm);
$ar[$your_array[$i][$arr_key_cm]][1]++;
$your_array[$i][$arr_key_pm] .= "PM";
$your_array[$i][$arr_key_cm] .= "CM";
}
It is ugly but it works :)
Somewhere should existe someone able to make more aesthetic..

Answer 2

for($i=0; $i<count($your_array);$i++)
{
$arr_keys = array_rand($your_array[$i], 2);
$your_array[$i][$arr_keys[0]] .= "PM";
$your_array[$i][$arr_keys[1]] .= "CM";
}
Should do the work.

Answer 3

I assume your inner array index is starting from zero. So generate the random index between 0 to your ( inner_array_size - 1). Then assign the value in the array's reference variable withing the loop.
foreach ($arr as &$value) {
$randomIndex = array_rand(range(0, (count($value) -1) ), 2);
$value[$randomIndex[0]] .= ' ["CM"]';
$value[$randomIndex[1]] .= ' ["PM"]';
}