How can convert a string array to int array

Question

I have a string array like this,

C:\wamp64\www\date\task.php:37:
array (size=6)
  0 => string '_06_CM_1640=[04];' (length=17)
  1 => string '_06_CM_1899=[05];' (length=17)
  2 => string '_06_CM_2094=[24];' (length=17)
  3 => string '_06_CM_2096=[12];' (length=17)
  4 => string '_06_CM_1871=[16,12];' (length=20)
  5 => string '_06_CM_3369=[09];' (length=17)

and I want to convert it to int array.

$_06_CM_1640 = [4];
$_06_CM_1899 = [5];
$_06_CM_2096 = [12]; 
$_06_CM_2094 = [24]; 
$_06_CM_1871 = [16,12]; 
$_06_CM_3369 = [16];

How can I do this in PHP? please assist me about this matter? regards, Bos

You mean make individual variables? I am not sure I understand what you are trying to do.... — Jeremy Harris
– Jeremy Harris, Commented Dec 12, 2019 at 13:48

Rakesh Jakhar · Accepted Answer · 2019-12-12 13:57:05Z

0

You can use array_walk

array_walk($aa, function($v, $k) use (&$new){
  $inner = explode('=', $v);
  $new[$inner[0]] = $inner[1];
});
print_r($new);// this will give you array with keys

Now you can use extract($new) to make each key as variable and access them using $_06_CM_1640

Example :- https://3v4l.org/ddKZj

edited Dec 12, 2019 at 13:57

answered Dec 12, 2019 at 13:51

Rakesh Jakhar

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1 Comment

Bos Over a year ago

Dear Rakesh Jakhar your code is good. But I want to separately arrays, like this below.$_06_CM_1640 = [4]; $_06_CM_1899 = [5]; $_06_CM_2096 = [12]; $_06_CM_2094 = [24]; $_06_CM_1871 = [16,12]; $_06_CM_3369 = [16];

Nigel Ren · Accepted Answer · 2019-12-12 14:01:18Z

This splits it down in stages, first by = which gives the name and value, then using trim() to remove any of =[]; round the values, finally explode the string to make it into an array of numbers...

$arr = [0 => '_06_CM_1640=[04];',
    1 => '_06_CM_1899=[05];',
    2 => '_06_CM_2094=[24];',
    3 =>  '_06_CM_2096=[12];',
    4 =>  '_06_CM_1871=[16,12];',
    5 =>  '_06_CM_3369=[09];'];

$output = [];
foreach ( $arr as $entry )  {
    list($name, $values) = explode("=", $entry,2);
    $output[$name] = explode(",", trim($values, "=[];" ));
} 


print_r($output);

gives..

Array
(
    [_06_CM_1640] => Array
        (
            [0] => 04
        )

    [_06_CM_1899] => Array
        (
            [0] => 05
        )

    [_06_CM_2094] => Array
        (
            [0] => 24
        )

    [_06_CM_2096] => Array
        (
            [0] => 12
        )

    [_06_CM_1871] => Array
        (
            [0] => 16
            [1] => 12
        )

    [_06_CM_3369] => Array
        (
            [0] => 09
        )

)

I would actually leave it as an array rather than individual values.

Denis METRAL · Accepted Answer · 2019-12-12 14:03:36Z

It's not very secure but something like this do the trick :

<?php
function convertStringArrayToIntArray($src)
{
    $int = [];
    foreach ($src as $key => $value){
        $split = explode('=', $value);
        $newKey = $split[0];
        $newValue = $split[1];
        $newValue = str_replace(['[', ']', ';'], '', $newValue);
        $newValue = explode(',', $newValue);
        array_walk($newValue, function(&$value, &$key){
            $value = intval($value);
        });
        $int[$newKey] = $newValue;
    }
    return $int;
}

$src = [
    0 => '_06_CM_1640=[04];',
    1 => '_06_CM_1899=[05];',
    2 => '_06_CM_2094=[24];',
    3 => '_06_CM_2096=[12];',
    4 => '_06_CM_1871=[16,12];',
    5 => '_06_CM_3369=[09];'
];
$ints = convertStringArrayToIntArray($src);
extract($ints);
var_dump(get_defined_vars());
//        $_06_CM_1640 = [4];
//        $_06_CM_1899 = [5];
//        $_06_CM_2096 = [12];
//        $_06_CM_2094 = [24];
//        $_06_CM_1871 = [16,12];
//        $_06_CM_3369 = [16];

Casimir et Hippolyte · Accepted Answer · 2019-12-12 14:37:27Z

0

$arr = [
    '_06_CM_1640=[04];',
    '_06_CM_1899=[05];',
    '_06_CM_2094=[24];',
    '_06_CM_2096=[12];',
    '_06_CM_1871=[16,12];',
    '_06_CM_3369=[09];'
];

$results = [];

foreach($arr as $v) {
    if (!preg_match_all('~ (?: , | (?<key> \w+ ) = \[ ) (?<val> \d+ ) ~xA', $v, $m))
        continue;

    $results[$m['key'][0]] = array_map('intval', $m['val']); 

}

var_dump($results);

// extract($results); // if you want to create the variables

edited Dec 12, 2019 at 14:37

answered Dec 12, 2019 at 14:09

Casimir et Hippolyte

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2 Comments

Bos Over a year ago

dear Casimir et Hippolte, your code is very usefull but I want to individual array

Casimir et Hippolyte Over a year ago

@Bos: that's why I wrote the last commented line if you want to do that. extract create individual variables named with the array keys. Uncomment it and do for example print_r($_06_CM_1640);. Note that I commented it since using extract is generally a bad practice.

Aksen P · Accepted Answer · 2019-12-12 15:19:43Z

0

You can make a new one array:

foreach($arr as $stri){
    $tmp = explode('=',$stri); 
    $ar[$tmp[0]] = explode(',',preg_replace('~[\[\]\;]~', '', $tmp[1]));  // clear values
}

and then use extract() function:

extract($ar);

print_r($_06_CM_1871);
print_r($_06_CM_3369);

Outputs:

Array
(
    [0] => 16
    [1] => 12
)
Array
(
    [0] => 09
)

Demo

answered Dec 12, 2019 at 15:19

Aksen P

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