/PHP/Php How do you remove an array element in a foreach loop?

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

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.

Source: stackoverflow.com

Similar codes

0 vote254 views1 answer
Class 'PHPUnit_Framework_TestCase' not found in vendor
PHP
4 votes246 views2 answers
What sign is less than or equal to php
PHP
43 votes276 views2 answers
Php can't upload gif
PHP
6 votes263 views3 answers
Laravel $loop->iteration
PHP Laravel
16 votes293 views6 answers
Php delete session
PHP
0 vote347 views3 answers
Is_unique in codeigniter form validation
PHP CodeIgniter
0 vote309 views1 answer
Laravel create new file if not exists
PHP Laravel
8 votes300 views1 answer
Laravel custom attributes
PHP Laravel
4 votes250 views3 answers
PHP multidimensional array search by value
PHP
10 votes288 views1 answer
Php sort array by subarray value
PHP