doing a regex on an array and storing in another array

Question

this is my code that extracts the date "2016-06-13" from the string "ffg_LTE_2016-06-13"

$re = '/(\d{8})|([0-9]{4}-[0-9]{2}-[0-9]{2})|([0-9]{2}-[0-9]{2}-[0-9]{4})/';
$str = "ffg_LTE_2016-06-13";
preg_match($re, $str, $matches);
$date=$matches[0];
print_r($date);

Now what I want to do is do somthing like this in a for loop but I am having issues with storing the result in an array. What I want to do is the same as above but do it on each elememt in the array.

$files=["ffg_LTE_2016-06-13","ffg_LTE_2016-06-14"];

foreach ($files as $value) {
    print_r("<br>".$value."<br>");
}

So my end result would be

$files_2=["2016-06-13","2016-06-14"];

here is my fiddle

why not jiust explode on the underscore

user557846
– user557846

2016-06-21 21:50:12 +00:00
Commented Jun 21, 2016 at 21:50 — user557846
– user557846, Commented Jun 21, 2016 at 21:50

Jonathan Lam · Accepted Answer · 2016-06-21 21:51:09Z

1

You can try this:

<?php

    $files=["ffg_LTE_2016-06-13","ffg_LTE_2016-06-14"];
    $re = '/(\d{8})|([0-9]{4}-[0-9]{2}-[0-9]{2})|([0-9]{2}-[0-9]{2}-[0-9]{4})/';

    $results = [];
    foreach ($files as $value) {
        preg_match($re, $value, $matches);
        $results[] = $matches[0];
    }
    print_r($results);

?>

It just loops through $files, pushes the first match into the array $results, and prints out $results.

answered Jun 21, 2016 at 21:51

Jonathan Lam

17.5k17 gold badges72 silver badges99 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

HattrickNZ Over a year ago

tks, can you just briefly explain this $results[] = $matches[0]; as I think I was tring to do this $results=$matches[0]or array_push($results,$matches[0]); but maybe I should do this array_push($results[],$matches[0]); I was basically missing the [] in results

user557846 Over a year ago

@HattrickNZ $results[] = $matches[0]; is equivalent to array_push($results,$matches[0]); as state on the manual page php.net/manual/en/function.array-push.php

Collectives™ on Stack Overflow

doing a regex on an array and storing in another array

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related