how to make a php array [closed]

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I tried transfer $str to be an array group.

$str = '1,2,3,4,5';
print_r(array($str)); //this get  Array ( [0] => 1,2,3,4,5 )

I tried compact

print_r(array(compact($str))); // Array ( [0] => Array ( ) )

but how to make $str to be

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

---

You should try to use explode keyword.

$str = '1,2,3,4,5';
print_r(explode(',', $str));

Should print:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

---

Try with:

$str = array(1,2,3,4,5);

Otherwise, if you mean that your input is '1,2,3,4,5' then use explode:

$str = explode(',', '1,2,3,4,5');

In both cases the output of print_r($str); is:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

---

In addition to @stivlo's answer, you can do this to break a string into an array:

$str = '1,2,3,4,5';
$array = explode(',', $str);

preg_split is also an option for more complicated splitting situations.

---

Try explode(',',$str).

Or better yet, array_map('intval',explode(',',$str)) if you want integers.

---

Why not use the explode function?

$arr = explode(",", $str);

---

Use explode() to split the string into array, if the $str must be a string. Or declare it as array.