PHP select a range from an array()

Question

I have an array() of years, they are in order lowest to highest, they are not sequential, so 1100, 1295, 1733,1734, 1980 etc. The key starts at 0 up to the number of years. So [0] => 1100, [1] => 1295.. [5] => 1980. What i am trying to do is pull a range out from the middle, so a user inputs start year = 1200 and end year = 1900. Can anyone help me create a new array from my original array with values that are between the start and end years. Thanks for your help. I am using PHP version 5.6+ cant remember the exact version.

Have a look at the array_search() function to identify your start and end keys, and then at array_slice() to extract the range if the user inputs exact values from your array; or even array_filter() to extract the values between start and end dates — Mark Baker
– Mark Baker, Commented Jan 15, 2018 at 20:20
rtfm only some, not sequential. Mark Baker; ok I see where your going with that, like searching a string gettng the length then doing a string length on it..... hmmm — chris davies
– chris davies, Commented Jan 15, 2018 at 20:24
No, that is not what Mark said, but that is also a possibility. Implode, regex/strpos, explode — Andreas
– Andreas, Commented Jan 15, 2018 at 20:30
array_filter() has lead me to this stackoverflow question which looks promising. Dont want to waste anyone elses time. stackoverflow.com/questions/6174760/… — chris davies
– chris davies, Commented Jan 15, 2018 at 20:31

jh1711 · Accepted Answer · 2018-01-15 20:32:09Z

2

I think array_filter with a custom callback is the shortest way to get the time span:

$array = [1100, 1295, 1733, 1734, 1980];
$start = 1200;
$end = 1733;
$result = array_filter($array, function ($value) use ($start, $end) 
  {return $start <= $value && $value <= $end;});
var_dump($result);

But there are many other ways.

answered Jan 15, 2018 at 20:32

jh1711

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1 Comment

chris davies Over a year ago

Yes, I am checking it out on my server, cheers ;) Building a timeline of historic caving events.. Bring on the darkness!

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