In an array, for example:
$arr = array('item1', 'item2' ... 'itemN');
I want to assign a value to each item. For this, I tried a foreach:
foreach($arr as $a => $b)
$b = 4;
but is informed by the IDE (phpStorm) that the unused local variable;
(unused local variable '$b')
How do I assign a value to an item in this array ??
Assign by passing the key, this is for both associative and numeric arrays. Then just combine the key ( $key ) with the array and assign the new value.
foreach($arr as $key => $value){
$arr[$key] = 'novo valor';
}
print_r($arr);
There's still another way, which is using reference.
foreach ($arr as $key => &$value) {
$value = 'novo valor';
}
unset($value); // Tem que apagar, pois o último sempre fica como referência.
When using the &$value sign, the current value of the iteration of foreach will be pointing to the original value of array , but as a reference. If you change it, the current value you pointed to will also change.
Note that at the end I used a unset , otherwise I would change the value $value out of foreach , the last element of $arr would be modified.