I have a php array with strings and I'd like to delete the keys that have a string containing only numbers.
How can I do that?
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3 Answers
Filtering the array would be the most elegant way:
$array = array_filter($array, 'is_numeric');
This returns an array with only those values for whom is_numeric() is true.
2 Comments
DanCapitanDePlai
Yes indeed, it looks way more elegant than the answers below, but I'm searching for numeric-only strings.
pilsetnieks
If you need only digits, without any other symbols that may appear in a numeric string, you can filter with
is_int.foreach ($array as $key => $val)
if (is_numeric($key)) // only numbers, a point and an `e` like in 1.1e10
unset($array[$key]);
This unsets all the entries where there are only numbers.
8 Comments
Jan Turoň
That's basically CooPer answer with typo corrected. Give him some time to fix it instead of duplicating the answer - it was his idea.
andrewsi
Isn't he looking for numeric keys, not values?
bwoebi
@JanTuroň see the time... My answer is older than his?
Ali Akbar Azizi
@JanTuroň we post at same time
Jan Turoň
@bwoebi: eh, his answer appeared sooner in my browser. However, it were just couple of seconds, therefore I take back the -1 from me. Sorry.
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Use this code
foreach($array as $key=>$value)
if(is_numeric($value))
unset($array($key));
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