How to make array from a single quoted array - php

Question

I have no idea How to convert a single quote array into array;
FOR Example:-
I have
$Array = '["ID" => 9, "Value" => [40,15,20,25,30]]';
print_r($Array);
Then it is showing like string not an array
["ID" => 9, "Value" => [40,15,20,25,30]]
so how to convert this into array
like the result will show like this
Array
(
[ID] => 9
[Value] => Array
(
[0] => 40
[1] => 15
[2] => 20
[3] => 25
[4] => 30
)
)
May be you have why i am putting array in single quote but this is not i am putting.
I Getting an array from DB after group_concat in mysql
This is the array
Array
(
[0] => Array
(
[GPN] => A
[PKGID] => PKG01
[Output] => ["ID" => 9, "Value" => [40,15,20,25,30]]
)
)
Here the Output is element coming like it's a string

Answer 1

You can do this but it might be dangerous:
$Array = '["ID" => 9, "Value" => [40,15,20,25,30]]';
eval('$Array = '.$Array.';'); // Could be dangerous
echo '<pre>';
print_r($Array);
echo '</pre>';
In my example above, $Array is assumed to be data coming from your database such as [Output] => ["ID" => 9, "Value" => [40,15,20,25,30]]. Since it is coming from the database then that means the possibility exists for the DB data to be malicious and eval() will gladly run anything you give it.

Answer 2

You can use eval to parse the string as php code like this:
$s = '["ID" => 9, "Value" => [40,15,20,25,30]]';
eval('$a = ' . $s . ';');
print_r($a);
This will work only with php 5.4 and up
CAUTION
If this string contains data from user then it is not safe to use eval.
Alternative solution
If you are the one who populate the database records, i suggests to serialize Output values as json, using json_encode, before insert to database.
Then you can use json_decode to access data as array.

Answer 3

<?php
$str = '["ID" => 9, "Value" => [40,15,20,25,30]]';
$array = eval('return ' . $str . ';');
var_export($array);
Output:
array (
'ID' => 9,
'Value' =>
array (
0 => 40,
1 => 15,
2 => 20,
3 => 25,
4 => 30,
),
)

Answer 4

So, your question is basically how to convert string representation of php array to php array. I don't know any tools for this, however you can use eval function.
$arr = [];
eval('$arr=' . $Array . ';');
// $arr contains php array
However this is not recommendable, because you can execute arbitrary code which undermines security of your application. Before using it you should make sure that $Array does not contain any malicious code and all strings are escaped.
If you run your application as a root user then it is even more dangerous. For example:
$Array = 'true?print_r($_SERVER['REQUEST_TIME']):0'
The above code will print all the server data of your application.

Answer 5

I think this solution.
$array = [
"ID" => 9,
"Value" => [40,15,20,25,30],
];
print_r($array);
Output :
/* Array ( [ID] => 9 [Value] => Array ( [0] => 40 [1] => 15 [2] => 20
[3]=> 25 [4] => 30 ) ) */
for other array :
$array =[
"0" => [
"GPN" => A,
"PKGID" => PKG01,
"Output" =>
[
"ID" => 9,
"Value" => [40,15,20,25,30]
]
]
];
print_r($array);
And output :
/*Array ( [0] => Array ( [GPN] => A [PKGID] => PKG01 [Output] => Array ( [ID] => 9 [Value] => Array ( [0] => 40 [1] => 15 [2] => 20 [3] => 25 [4] => 30 ) ) ) ) */
advise : the name "PKG01".
psr-1 : constants MUST be declared in all upper case
source : psr-1