Build array by string name OR make multiple array by string values

Question

I want to build a array or multiple array by breaking the main array , and my array is like ,

    Array
(
    [0] => string1   
    [1] => 1
    [2] => 2
    [3] => 3
    [4] => 66
    [5] => 34
    [6] => string1
    [7] => aww
    [8] => brr
    [9] => string3
    [10] => xas

)

So basically by the value 'string1' i want to make a new array or first array which has only those three values (1,2,3) and same for string2 and string3,So each array has its values(three). Please help me to build this. Note: those all string names will be static.

Thank you in advance.

Result should me like:

string1 array:  
<pre>Array
(
    [1] => 1
    [2] => 2
    [3] => 3
    [4] => 66
    [5] => 34
)

string2 array:  
<pre>Array
(
    [1] => aww
    [2] => brr
)

string3 array:  
<pre>Array
(
    [1] => xas
)

It would be a better idea to look at how you created this array in the first place and create it there as you actually want it to be — RiggsFolly
– RiggsFolly, Commented Oct 21, 2016 at 13:43
I think that re-arranging everything in one big multi-dimensional array is a better idea than generating loads of new variables that after this re-ordering might or might not exist. — jeroen
– jeroen, Commented Oct 21, 2016 at 13:52

RiggsFolly · Accepted Answer · 2016-10-21 14:13:40Z

2

This I think will get you what you want.

It does assume that the first entry in the old array will be a keyword!

$old = array('string1',1,2,3,66,34,'string2','aww','brr','string3','xas');
$new = array();

$keywords = array('string1', 'string2', 'string3');
$last_keyword = '';

foreach ($old as $o) {
    if ( in_array($o, $keywords) ) {
        $last_keyword = $o;        
    } else {
        $new[$last_keyword][] = $o;
    }
}

print_r($new);

It creates a new array like this

Array
(
    [string1] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
            [3] => 66
            [4] => 34
        )

    [string2] => Array
        (
            [0] => aww
            [1] => brr
        )

    [string3] => Array
        (
            [0] => xas
        )

)

However I still maintain that it would be better to go back to where the original array gets created and look to amend that process rather than write a fixup for it

edited Oct 21, 2016 at 14:13

answered Oct 21, 2016 at 14:07

RiggsFolly

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1 Comment

Wit Wikky Over a year ago

Works awesome.Thank you for help.

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