How do mass unset of an array elements in php?

Question

Possible Duplicate:
unset range of keys in an array

I have an array $test, it contains 1000s of element with random key between 1 and 10000, I want to unset array elements of particular key range. eg i wanna unset elements if the key value between 500 and 600. Now i am using foreach loop to do this. Any other php shortcut to do this?

Jeff · Answer 1 · 2012-09-20T06:34:12.607

4

How about this (untested, hand-written)

function unsetRange($arr,$from,$to)
{
    for($i=$from;$i<=$to;$i++)
        unset($arr[$i]);
}

// Unset elements from 500 to 600
unsetRange($myArr,500,100);

edited Sep 20 '12 at 06:34

answered Sep 20 '12 at 06:22

Jeff

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@Mihai Iorga - I provided the code he was asking for: `I want to unset array elements of particular key range.` - Generating the numbers is out of the scope of this question/answer. (atleast IMO) – Jeff Sep 20 '12 at 06:49

score 3 · Accepted Answer · edited May 23 '17 at 10:25

3

Original link

unset range of keys in an array

You can try array_slice

$return = array_slice($original, 0, 60)

then

$return = $return+array_slice($original, 70)

or

array_splice

$return = array_splice($original, 60, 10)

edited May 23 '17 at 10:25

Community

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answered Sep 20 '12 at 06:20

Yogesh Suthar

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This is a copied answer from another question.. You should specify that (same answer found on http://stackoverflow.com/questions/2352926/unset-range-of-keys-in-an-array ) – Mihai Matei Sep 20 '12 at 06:22
@MateiMihai .. link is added.. – Yogesh Suthar Sep 20 '12 at 06:25
still, OP stated that the keys are random, and not incremental – Mihai Iorga Sep 20 '12 at 06:48
Copying a noteworthy comment from @ryeguy : `This works, but it's really inefficient. You're creating 3 arrays in addition to the one you start with. ` – Jeff Sep 20 '12 at 06:51

How do mass unset of an array elements in php?

2 Answers2