Populate an array with two sets of values while looping over an array of delimited strings

Question

I have a flat array of pipe-delimited strings:

Array
(
    [0] => style1|000000
    [1] => style2|ff6600
)

I iterate the data like this:

foreach ($styles as $key => $value) {
    $sort_values[] = explode('|', $value);
}

print_r($sort_values) shows:

Array
(
    [0] => Array
        (
            [0] => style1
            [1] => 000000
        )
    [1] => Array
        (
            [0] => style2
            [1] => ff6600
        )
)

I would actually like a transposed structure with associative first level keys:

Array
(
    [styles] => Array
        (
            [0] => style1
            [1] => style2
        )
    [links] => Array
        (
            [0] => 000000
            [1] => ff6600
        )
)

How does the data get into your styles array? Does it come from text? — Ja͢ck
– Ja͢ck, Commented Oct 24, 2012 at 2:28

Michael Berkowski · Accepted Answer · 2012-10-24 02:16:36Z

5

Assuming your input array looks like

array('style1|000000','style2|ff6600', 'style3|22ff22')

You need a little more logic in your loop.

// Initialize output array with an empty styles subarray and a links subarray
$out = array('styles'=>array(), 'links'=>array());
foreach ($styles as $key=>$value) {
   // Loop over and split on the |
   list($style, $link) = explode("|", $value);
   // And append the two resultant values to their respective subarrays via []
   $out['styles'][] = $style;
   $out['links'][] = $link;

   // list() is a useful construct for producing readable results with small arrays,
   // but I could also have used an array to receive the 
   // results of explode()
   // $split = explode("|", $value);
   // $out['styles'][] = $split[0];
   // $out['links'][] = $split[1];

}
print_r($out);

// Prints:
Array
(
    [styles] => Array
        (
            [0] => style1
            [1] => style2
            [2] => style3
        )

    [links] => Array
        (
            [0] => 000000
            [1] => ff6600
            [2] => 22ff22
        )

)

edited Oct 24, 2012 at 2:16

answered Oct 24, 2012 at 2:11

Michael Berkowski

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1 Comment

Michael Berkowski Over a year ago

@Benn Every question deserves an answer with a solid explanation. Code solutions without explanations are just solutions, not answers.

mickmackusa · Accepted Answer · 2024-01-23 06:08:11Z

0

You can use explode() or sscanf() to parse those pipe-delimited strings.

Code: (Demo) (w/ explode())

$result = [];
foreach ($array as $v) {
    sscanf($v, '%[^|]|%s', $result['style'][], $result['links'][]);
    // [$result['style'][], $result['links'][]] = explode('|', $v);
}
var_export($result);

answered Jan 23, 2024 at 6:08

mickmackusa♦

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