php How do you remove an array element in a foreach loop?

Friendly Fowl answered on August 9, 2021 Popularity 9/10 Helpfulness 5/10

answer php How do you remove an array element in a foreach loop?

php How do you remove an array element in a foreach loop?

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Instead of doing foreach() loop on the array, it would be faster to use array_search() to find the proper key. On small arrays, I would go with foreach for better readibility, but for bigger arrays, or often executed code, this should be a bit more optimal:

$result=array_search($unwantedValue,$array,true);
if($result !== false) {
  unset($array[$result]);   
}

The strict comparsion operator !== is needed, because array_search() can return 0 as the index of the $unwantedValue.

Also, the above example will remove just the first value $unwantedValue, if the $unwantedValue can occur more then once in the $array, You should use array_keys(), to find all of them:

$result=array_keys($array,$unwantedValue,true)
foreach($result as $key) {
  unset($array[$key]);
}

Check http://php.net/manual/en/function.array-search.php for more information.

Popularity 9/10 Helpfulness 5/10 Language php

Source: stackoverflow.com

Tags: element foreach php

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Contributed on Aug 09 2021

Friendly Fowl

0 Answers Avg Quality 2/10

php How do you remove an array element in a foreach loop?

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